{"id":163,"date":"2014-07-15T22:10:09","date_gmt":"2014-07-15T22:10:09","guid":{"rendered":"https:\/\/daspedia.com\/?page_id=163"},"modified":"2025-04-16T13:48:11","modified_gmt":"2025-04-16T13:48:11","slug":"analog-or-digital","status":"publish","type":"page","link":"https:\/\/daspedia.com\/analog-or-digital","title":{"rendered":"Analog or Digital DAS System"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; specialty=&#8221;on&#8221; _builder_version=&#8221;4.16&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;3_4&#8243; specialty_columns=&#8221;3&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_row_inner _builder_version=&#8221;4.16&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_column_inner _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_cta title=&#8221;Analog or Digital DAS&#8221; admin_label=&#8221;page action label&#8221; module_id=&#8221;action_head&#8221; _builder_version=&#8221;4.27.4&#8243; background_color=&#8221;#0049b7&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221; text_orientation=&#8221;left&#8221; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; button_text_size__hover_enabled=&#8221;off&#8221; button_one_text_size__hover_enabled=&#8221;off&#8221; button_two_text_size__hover_enabled=&#8221;off&#8221; button_text_color__hover_enabled=&#8221;off&#8221; button_one_text_color__hover_enabled=&#8221;off&#8221; button_two_text_color__hover_enabled=&#8221;off&#8221; button_border_width__hover_enabled=&#8221;off&#8221; button_one_border_width__hover_enabled=&#8221;off&#8221; button_two_border_width__hover_enabled=&#8221;off&#8221; button_border_color__hover_enabled=&#8221;off&#8221; button_one_border_color__hover_enabled=&#8221;off&#8221; button_two_border_color__hover_enabled=&#8221;off&#8221; button_border_radius__hover_enabled=&#8221;off&#8221; button_one_border_radius__hover_enabled=&#8221;off&#8221; button_two_border_radius__hover_enabled=&#8221;off&#8221; button_letter_spacing__hover_enabled=&#8221;off&#8221; button_one_letter_spacing__hover_enabled=&#8221;off&#8221; button_two_letter_spacing__hover_enabled=&#8221;off&#8221; button_bg_color__hover_enabled=&#8221;off&#8221; button_one_bg_color__hover_enabled=&#8221;off&#8221; button_two_bg_color__hover_enabled=&#8221;off&#8221; header_font=&#8221;&#8211;et_global_heading_font|600|||||||&#8221; header_text_align=&#8221;center&#8221; header_text_color=&#8221;#d8d8d8&#8243; header_font_size=&#8221;28px&#8221; sticky_enabled=&#8221;0&#8243;][\/et_pb_cta][et_pb_text admin_label=&#8221;Text &#8211; Share Buttons&#8221; _builder_version=&#8221;4.16&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; text_font=&#8221;&#8211;et_global_body_font|300|||||||&#8221; text_text_color=&#8221;#303030&#8243; sticky_enabled=&#8221;0&#8243;]<\/p>\n<!-- Simple Share Buttons Adder (8.5.3) simplesharebuttons.com --><div class=\"ssba-modern-2 ssba ssbp-wrap alignleft ssbp--theme-1\"><div style=\"text-align:left\"><span class=\"ssba-share-text\">Share it via...<\/span><ul class=\"ssbp-list\"><li class='ssbp-li--facebook'><a data-site=\"facebook\" class=\"ssba_facebook_share ssba_share_link ssbp-facebook ssbp-btn\" href=\"https:\/\/www.facebook.com\/sharer.php?t=Analog or Digital DAS System&u=https:\/\/daspedia.com\/wp-json\/wp\/v2\/pages\/163\"  target=_blank  style=\"color:#4267B2; background-color: #4267B2; height: 40px; width: 40px; \" ><span><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"#fff\" preserveAspectRatio=\"xMidYMid meet\" height=\"1em\" width=\"1em\" viewBox=\"0 0 40 40\">\n  <g>\n    <path d=\"m21.7 16.7h5v5h-5v11.6h-5v-11.6h-5v-5h5v-2.1c0-2 0.6-4.5 1.8-5.9 1.3-1.3 2.8-2 4.7-2h3.5v5h-3.5c-0.9 0-1.5 0.6-1.5 1.5v3.5z\"><\/path>\n  <\/g>\n<\/svg>\n\n<\/span><span class=\"color-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"28\" viewBox=\"0 0 16 28\">\n  <path fill=\"#3B5998\" d=\"M10.7,10.7 L15.7,10.7 L15.7,15.7 L10.7,15.7 L10.7,27.3 L5.7,27.3 L5.7,15.7 L0.7,15.7 L0.7,10.7 L5.7,10.7 L5.7,8.6 C5.7,6.6 6.3,4.1 7.5,2.7 C8.8,1.4 10.3,0.7 12.2,0.7 L15.7,0.7 L15.7,5.7 L12.2,5.7 C11.3,5.7 10.7,6.3 10.7,7.2 L10.7,10.7 Z\"\/>\n<\/svg>\n<\/span><div title=\"Facebook\" class=\"ssbp-text\">Facebook<\/div><\/a><\/li><li class='ssbp-li--twitter'><a data-site=\"twitter\" class=\"ssba_twitter_share ssba_share_link ssbp-twitter ssbp-btn\" href=\"https:\/\/twitter.com\/intent\/tweet?text=Analog or Digital DAS System&url=https:\/\/daspedia.com\/wp-json\/wp\/v2\/pages\/163&via=\"  target=_blank  style=\"color:#000000; background-color: #000000; height: 40px; width: 40px; \" ><span><svg width=\"25\" height=\"25\" viewBox=\"0 0 25 25\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n    <rect width=\"25\" height=\"25\" \/>\n    <path d=\"M14.4821 11.6218L21.0389 4H19.4852L13.7919 10.6179L9.24467 4H4L10.8763 14.0074L4 22H5.55385L11.5661 15.0113L16.3683 22H21.613L14.4821 11.6218ZM6.11371 5.16972H8.50031L19.4859 20.8835H17.0993L6.11371 5.16972Z\" fill=\"white\"\/>\n<\/svg>\n<\/span><span class=\"color-icon\"><svg width=\"25\" height=\"25\" viewBox=\"0 0 25 25\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n\t<rect width=\"25\" height=\"25\" \/>\n\t<path d=\"M14.4821 11.6218L21.0389 4H19.4852L13.7919 10.6179L9.24467 4H4L10.8763 14.0074L4 22H5.55385L11.5661 15.0113L16.3683 22H21.613L14.4821 11.6218ZM6.11371 5.16972H8.50031L19.4859 20.8835H17.0993L6.11371 5.16972Z\" fill=\"#000000\"\/>\n<\/svg>\n<\/span><div title=\"Twitter\" class=\"ssbp-text\">Twitter<\/div><\/a><\/li><li class='ssbp-li--linkedin'><a data-site=\"linkedin\" class=\"ssba_linkedin_share ssba_share_link ssbp-linkedin ssbp-btn\" href=\"https:\/\/www.linkedin.com\/shareArticle?title=Analog or Digital DAS System&url=https:\/\/daspedia.com\/wp-json\/wp\/v2\/pages\/163\"  target=_blank  style=\"color:#0077b5; background-color: #0077b5; height: 40px; width: 40px; \" ><span><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"#fff\" preserveAspectRatio=\"xMidYMid meet\" height=\"1em\" width=\"1em\" viewBox=\"0 0 40 40\">\n  <g>\n    <path d=\"m13.3 31.7h-5v-16.7h5v16.7z m18.4 0h-5v-8.9c0-2.4-0.9-3.5-2.5-3.5-1.3 0-2.1 0.6-2.5 1.9v10.5h-5s0-15 0-16.7h3.9l0.3 3.3h0.1c1-1.6 2.7-2.8 4.9-2.8 1.7 0 3.1 0.5 4.2 1.7 1 1.2 1.6 2.8 1.6 5.1v9.4z m-18.3-20.9c0 1.4-1.1 2.5-2.6 2.5s-2.5-1.1-2.5-2.5 1.1-2.5 2.5-2.5 2.6 1.2 2.6 2.5z\"><\/path>\n  <\/g>\n<\/svg>\n\n<\/span><span class=\"color-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"50px\" height=\"50px\" viewBox=\"0 0 50 50\" version=\"1.1\">\n<g id=\"surface97807\">\n<path style=\" stroke:none;fill-rule:nonzero;fill:rgb(0%,46.666667%,70.980392%);fill-opacity:1;\" d=\"M 8 3.007812 C 4.53125 3.007812 2.007812 5.089844 2.007812 7.949219 C 2.007812 10.820312 4.589844 12.988281 8 12.988281 C 11.46875 12.988281 13.988281 10.871094 13.988281 7.890625 C 13.832031 5.019531 11.359375 3.007812 8 3.007812 Z M 3 15 C 2.449219 15 2 15.449219 2 16 L 2 45 C 2 45.550781 2.449219 46 3 46 L 13 46 C 13.550781 46 14 45.550781 14 45 L 14 16 C 14 15.449219 13.550781 15 13 15 Z M 18 15 C 17.449219 15 17 15.449219 17 16 L 17 45 C 17 45.550781 17.449219 46 18 46 L 27 46 C 27.550781 46 28 45.550781 28 45 L 28 29.5 C 28 27.128906 29.820312 25.199219 32.140625 25.019531 C 32.261719 25 32.378906 25 32.5 25 C 32.621094 25 32.738281 25 32.859375 25.019531 C 35.179688 25.199219 37 27.128906 37 29.5 L 37 45 C 37 45.550781 37.449219 46 38 46 L 47 46 C 47.550781 46 48 45.550781 48 45 L 48 28 C 48 21.53125 44.527344 15 36.789062 15 C 33.269531 15 30.609375 16.359375 29 17.488281 L 29 16 C 29 15.449219 28.550781 15 28 15 Z M 18 15 \"\/>\n<\/g>\n<\/svg>\n<\/span><div title=\"Linkedin\" class=\"ssbp-text\">Linkedin<\/div><\/a><\/li><li class='ssbp-li--reddit'><a data-site=\"reddit\" class=\"ssba_reddit_share ssba_share_link ssbp-reddit ssbp-btn\" href=\"https:\/\/reddit.com\/submit?title=Analog or Digital DAS System&url=https:\/\/daspedia.com\/wp-json\/wp\/v2\/pages\/163\"  target=_blank  style=\"color:#ff4500; background-color: #ff4500; height: 40px; width: 40px; \" ><span><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"#fff\" preserveAspectRatio=\"xMidYMid meet\" height=\"1em\" width=\"1em\" viewBox=\"0 0 40 40\">\n  <g>\n    <path d=\"m40 18.9q0 1.3-0.7 2.3t-1.7 1.7q0.2 1 0.2 2.1 0 3.5-2.3 6.4t-6.5 4.7-9 1.7-8.9-1.7-6.4-4.7-2.4-6.4q0-1.1 0.2-2.1-1.1-0.6-1.8-1.6t-0.7-2.4q0-1.8 1.3-3.2t3.1-1.3q1.9 0 3.3 1.4 4.8-3.3 11.5-3.6l2.6-11.6q0-0.3 0.3-0.5t0.6-0.1l8.2 1.8q0.4-0.8 1.2-1.3t1.8-0.5q1.4 0 2.4 1t0.9 2.3-0.9 2.4-2.4 1-2.4-1-0.9-2.4l-7.5-1.6-2.3 10.5q6.7 0.2 11.6 3.6 1.3-1.4 3.2-1.4 1.8 0 3.1 1.3t1.3 3.2z m-30.7 4.4q0 1.4 1 2.4t2.4 1 2.3-1 1-2.4-1-2.3-2.3-1q-1.4 0-2.4 1t-1 2.3z m18.1 8q0.3-0.3 0.3-0.6t-0.3-0.6q-0.2-0.2-0.5-0.2t-0.6 0.2q-0.9 0.9-2.7 1.4t-3.6 0.4-3.6-0.4-2.7-1.4q-0.2-0.2-0.5-0.2t-0.6 0.2q-0.3 0.2-0.3 0.6t0.3 0.6q1 0.9 2.6 1.5t2.8 0.6 2 0.1 2-0.1 2.8-0.6 2.6-1.6z m-0.1-4.6q1.4 0 2.4-1t1-2.4q0-1.3-1-2.3t-2.4-1q-1.3 0-2.3 1t-1 2.3 1 2.4 2.3 1z\"><\/path>\n  <\/g>\n<\/svg>\n\n<\/span><span class=\"color-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"40\" height=\"38\" viewBox=\"0 0 40 38\">\n  <defs>\n    <path id=\"reddit-white-a\" d=\"M40,19.9 C40,20.7666667 39.7666667,21.5333333 39.3,22.2 C38.8333333,22.8666667 38.2666667,23.4333333 37.6,23.9 C37.7333333,24.5666667 37.8,25.2666667 37.8,26 C37.8,28.3333333 37.0333333,30.4666667 35.5,32.4 C33.9666667,34.3333333 31.8,35.9 29,37.1 C26.2,38.3 23.2,38.8666667 20,38.8 C16.8,38.7333333 13.8333333,38.1666667 11.1,37.1 C8.36666667,36.0333333 6.23333333,34.4666667 4.7,32.4 C3.16666667,30.3333333 2.36666667,28.2 2.3,26 C2.3,25.2666667 2.36666667,24.5666667 2.5,23.9 C1.76666667,23.5 1.16666667,22.9666667 0.7,22.3 C0.233333333,21.6333333 -4.4408921e-16,20.8333333 -4.4408921e-16,19.9 C-4.4408921e-16,18.7 0.433333333,17.6333333 1.3,16.7 C2.16666667,15.7666667 3.2,15.3333333 4.4,15.4 C5.66666667,15.4 6.76666667,15.8666667 7.7,16.8 C10.9,14.6 14.7333333,13.4 19.2,13.2 L21.8,1.6 C21.8,1.4 21.9,1.23333333 22.1,1.1 C22.3,0.966666667 22.5,0.933333333 22.7,1 L30.9,2.8 C31.1666667,2.26666667 31.5666667,1.83333333 32.1,1.5 C32.6333333,1.16666667 33.2333333,1 33.9,1 C34.8333333,1 35.6333333,1.33333333 36.3,2 C36.9666667,2.66666667 37.2666667,3.43333333 37.2,4.3 C37.1333333,5.16666667 36.8333333,5.96666667 36.3,6.7 C35.7666667,7.43333333 34.9666667,7.76666667 33.9,7.7 C32.8333333,7.63333333 32.0333333,7.3 31.5,6.7 C30.9666667,6.1 30.6666667,5.3 30.6,4.3 L23.1,2.7 L20.8,13.2 C25.2666667,13.3333333 29.1333333,14.5333333 32.4,16.8 C33.2666667,15.8666667 34.3333333,15.4 35.6,15.4 C36.8,15.4 37.8333333,15.8333333 38.7,16.7 C39.5666667,17.5666667 40,18.6333333 40,19.9 Z M9.3,24.3 C9.3,25.2333333 9.63333333,26.0333333 10.3,26.7 C10.9666667,27.3666667 11.7666667,27.7 12.7,27.7 C13.6333333,27.7 14.4,27.3666667 15,26.7 C15.6,26.0333333 15.9333333,25.2333333 16,24.3 C16.0666667,23.3666667 15.7333333,22.6 15,22 C14.2666667,21.4 13.5,21.0666667 12.7,21 C11.7666667,21 10.9666667,21.3333333 10.3,22 C9.63333333,22.6666667 9.3,23.4333333 9.3,24.3 Z M27.4,32.3 C27.6,32.1 27.7,31.9 27.7,31.7 C27.7,31.5 27.6,31.3 27.4,31.1 C27.2666667,30.9666667 27.1,30.9 26.9,30.9 C26.7,30.9 26.5,30.9666667 26.3,31.1 C25.7,31.7 24.8,32.1666667 23.6,32.5 C22.4,32.8333333 21.2,32.9666667 20,32.9 C18.8,32.8333333 17.6,32.7 16.4,32.5 C15.2,32.3 14.3,31.8333333 13.7,31.1 C13.5666667,30.9666667 13.4,30.9 13.2,30.9 C13,30.9 12.8,30.9666667 12.6,31.1 C12.4,31.2333333 12.3,31.4333333 12.3,31.7 C12.3,31.9666667 12.4,32.1666667 12.6,32.3 C13.2666667,32.9 14.1333333,33.4 15.2,33.8 C16.2666667,34.2 17.2,34.4 18,34.4 C18.8,34.4 19.4666667,34.4333333 20,34.5 C20.5333333,34.5666667 21.2,34.5333333 22,34.4 C22.8,34.2666667 23.7333333,34.0666667 24.8,33.8 C25.8666667,33.5333333 26.7333333,33 27.4,32.2 L27.4,32.3 Z M27.3,27.7 C28.2333333,27.7 29.0333333,27.3666667 29.7,26.7 C30.3666667,26.0333333 30.7,25.2333333 30.7,24.3 C30.7,23.4333333 30.3666667,22.6666667 29.7,22 C29.0333333,21.3333333 28.2333333,21 27.3,21 C26.4333333,21 25.6666667,21.3333333 25,22 C24.3333333,22.6666667 24,23.4333333 24,24.3 C24,25.1666667 24.3333333,25.9666667 25,26.7 C25.6666667,27.4333333 26.4333333,27.7666667 27.3,27.7 Z\"\/>\n  <\/defs>\n  <g fill=\"none\" transform=\"translate(0 -1)\">\n    <use fill=\"#FFF\" fill-rule=\"evenodd\" xlink:href=\"#reddit-white-a\"\/>\n    <use fill=\"#FF4500\" fill-rule=\"evenodd\" xlink:href=\"#reddit-white-a\"\/>\n  <\/g>\n<\/svg>\n<\/span><div title=\"Reddit\" class=\"ssbp-text\">Reddit<\/div><\/a><\/li><li class='ssbp-li--outlook'><a data-site=\"outlook\" class=\"ssba_outlook_share ssba_share_link ssbp-outlook ssbp-btn\" href=\"https:\/\/outlook.live.com\/mail\/deeplink\/compose?path=mail inbox&subject=&body=\"  target=_blank  style=\"color:#3070CB; background-color: #3070CB; height: 40px; width: 40px; \" ><span><svg width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M0 2.25352V17.5587L11.7718 20V0L0 2.25352ZM5.93071 13.4655C2.18849 13.2268 2.57391 6.55516 6.01807 6.50215C9.70772 6.74336 9.34576 13.4123 5.93071 13.4655ZM5.98466 7.80844C4.01315 7.94383 4.10142 12.1212 5.95425 12.1547C7.91726 12.0296 7.80198 7.8409 5.98466 7.80844ZM13.7776 10.4691C13.9554 10.5983 14.1695 10.4691 14.1695 10.4691C13.9561 10.5983 20 6.62762 20 6.62762V13.8179C20 14.6005 19.4934 14.9288 18.9238 14.9288H12.5154L12.5158 9.61203L13.7776 10.4691ZM12.5161 4.24039V8.1525L13.8983 9.01332C13.9348 9.02387 14.0138 9.02461 14.0502 9.01332L19.9992 5.04637C19.9992 4.57691 19.5564 4.24039 19.3065 4.24039H12.5161Z\" fill=\"white\"\/><\/svg>\n<\/span><span class=\"color-icon\"><svg width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n<path d=\"M0 2.25352V17.5587L11.7718 20V0L0 2.25352ZM5.93071 13.4655C2.18849 13.2268 2.57391 6.55516 6.01807 6.50215C9.70772 6.74336 9.34576 13.4123 5.93071 13.4655ZM5.98466 7.80844C4.01315 7.94383 4.10142 12.1212 5.95425 12.1547C7.91726 12.0296 7.80198 7.8409 5.98466 7.80844ZM13.7776 10.4691C13.9554 10.5983 14.1695 10.4691 14.1695 10.4691C13.9561 10.5983 20 6.62762 20 6.62762V13.8179C20 14.6005 19.4934 14.9288 18.9238 14.9288H12.5154L12.5158 9.61203L13.7776 10.4691ZM12.5161 4.24039V8.1525L13.8983 9.01332C13.9348 9.02387 14.0138 9.02461 14.0502 9.01332L19.9992 5.04637C19.9992 4.57691 19.5564 4.24039 19.3065 4.24039H12.5161Z\" fill=\"#3070CB\"\/>\n<\/svg>\n<\/span><div title=\"Outlook\" class=\"ssbp-text\">Outlook<\/div><\/a><\/li><\/ul><\/div><\/div>\n<p>[\/et_pb_text][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner _builder_version=&#8221;4.16&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_column_inner _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_divider color=&#8221;#0049b7&#8243; divider_style=&#8221;dotted&#8221; divider_weight=&#8221;1px&#8221; show_divider_tablet=&#8221;&#8221; show_divider_phone=&#8221;&#8221; show_divider_last_edited=&#8221;on|phone&#8221; disabled_on=&#8221;on|on|off&#8221; admin_label=&#8221;Blue Full Divider 1px Dotted&#8221; _builder_version=&#8221;4.27.4&#8243; width=&#8221;100%&#8221; custom_margin=&#8221;||0px||false|false&#8221; custom_padding=&#8221;||0px||false|false&#8221; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221; global_module=&#8221;7869&#8243; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_divider][et_pb_text admin_label=&#8221;Text &#8211; Body&#8221; _builder_version=&#8221;4.27.4&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; text_font=&#8221;&#8211;et_global_body_font||||||||&#8221; text_text_color=&#8221;#303030&#8243; text_font_size=&#8221;16px&#8221; sticky_enabled=&#8221;0&#8243;]<\/p>\n<p>Typical iDAS installations today are considered analog. This is because the BTS converts the digital feed into analog RF form (see Figure 3.) The analog RF signals are attenuated and fed into a multi-carrier DAS Head-End for distribution. Most DAS Head-End equipment distribute the signals to a RRU (Remote Radio Unit) via fiber optic cable. That doesn\u2019t mean the signal is turned back into digital form, but rather that DAS Head-End units have built-in optical transceivers that perform electric-to-optical (E\/O) and optical-to-electric (O\/E) conversion. This is called RF-over-Fiber.\u00a0 Optical transceivers use directly modulated lasers to perform this conversion. An analog RF transmission is one continuous wave which can\u2019t be interrupted or resent (unlike digital data.) This is where you\u2019ll hear industry terms like noise figure (NF), signal-to-noise ratio (SNR), and Spur Free Dynamic Range (SFDR).<\/p>\n<p>Analog DAS is not efficient and very costly. This is the inefficiency wagon again described in the iDAS vs. oDAS section. A high-power BTS pumps out RF signals that need to be attenuated and conditioned. The signals then travel through coaxial cables or jumpers which cause further loss affecting the overall link budget. The DAS Head-End converts the signal into optical form which also contributes to loss and adds unnecessary noise from the lasers in the optical transceivers. The signals are converted back into RF form and re-amplified at the remote node. More coaxial cables are needed between the remote nodes and indoor antennas. Passive components such as combiners, splitters and couplers contribute to more power losses.<\/p>\n<p>Heat dissipation from high-power RF equipment at the BTS is also a concern. Carriers must pay high utility costs cooling their equipment and maintaining a constant temperature. In addition, DAS equipment requires backup power. The panic would be bad enough if the power went off in a stadium full of spectators, but an even worse scenario would be dealing with the anxiety-ridden users robbed of their cellphone service or unable to update their Facebook status.<\/p>\n<p>Analog DAS does have its advantages however. It\u2019s a truly neutral system because the components used are broadband. There are components that go as low as 20 MHz and as high as 3 GHz. Such bandwidth is enough for most cellular systems as spectrums tend to fall within 100 MHz to 2.8 GHz. Analog DAS don\u2019t distinguish between carrier spectrums or bands. As long as RF signals fall within the DAS specified bandwidth and don\u2019t overlap, DAS performs its job of transporting them between BTS and indoor antennas.<\/p>\n<div id=\"attachment_1098\" style=\"width: 1034px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/daspedia.com\/wp-content\/uploads\/2014\/07\/figure3.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1098\" class=\"size-large wp-image-1098\" src=\"https:\/\/daspedia.com\/wp-content\/uploads\/2014\/07\/figure3-1024x773.jpg\" alt=\"analog or digital DAS\" width=\"1024\" height=\"773\" srcset=\"https:\/\/daspedia.com\/wp-content\/uploads\/2014\/07\/figure3-1024x773.jpg 1024w, https:\/\/daspedia.com\/wp-content\/uploads\/2014\/07\/figure3-600x453.jpg 600w, https:\/\/daspedia.com\/wp-content\/uploads\/2014\/07\/figure3-300x226.jpg 300w, https:\/\/daspedia.com\/wp-content\/uploads\/2014\/07\/figure3-1080x816.jpg 1080w, https:\/\/daspedia.com\/wp-content\/uploads\/2014\/07\/figure3-150x113.jpg 150w, https:\/\/daspedia.com\/wp-content\/uploads\/2014\/07\/figure3-500x377.jpg 500w, https:\/\/daspedia.com\/wp-content\/uploads\/2014\/07\/figure3.jpg 1244w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><p id=\"caption-attachment-1098\" class=\"wp-caption-text\">Analog or Digital DAS &#8211; Figure 3<\/p><\/div>\n<p>But Digital DAS is the future. The concept of Digital DAS is to perform digital-to-analog (D\/A) and analog-to-digital (A\/D) conversions at remote nodes rather than the BTS. It\u2019s a much more efficient system. First of all, carriers won\u2019t need high-powered BTS. Instead they\u2019ll deploy equipment such as a Base Band Unit (BBU) that connects directly to a carriers\u2019 fiber <span class=\"explanatory-dictionary-highlight\" data-definition=\"explanatory-dictionary-definition-141\">backhaul<\/span>. Remember <span class=\"explanatory-dictionary-highlight\" data-definition=\"explanatory-dictionary-definition-141\">backhaul<\/span> is the fiber optic network that connects a carrier\u2019s central tower to its remote hubs. A BBU performs the same function as a traditional BTS but without its bulky RF processing modules. Because everything is digital. There\u2019s no need to perform analog-to-digital conversions at a BBU location. A BBU essentially functions like a network switch or router that directs traffic. In this instance, the traffic happens to be cellular. BBUs will be connected to low-power remote radio nodes such as MROs (Metro Radio Outdoor) or MCOs (Metro Cell Outdoor). Such radio heads are manufactured by companies like Alcatel Lucent. This is where you\u2019ll start hearing terms like Small Cells, used to describe digitally-fed low-power radio nodes deployed by carriers. It\u2019s a convenient way for carriers to provide coverage without investing in expensive DAS equipment, filling the gap in areas where coverage is spotty or lacking.<\/p>\n<p>Carriers offer wireless subscribers living in remote areas with insufficient or no cellular coverage devices called femto-cells. These femto-cells are connected to a consumer\u2019s home internet modem via ethernet cable and provide services for up to 5 simultaneous users. Such equipment has been available at carriers\u2019 disposal for some time now. Think of Small Cells as femto-cells on steroids. Small Cells such as MROs or MCOs are capable of supporting 50 or more users at a given time. These nodes are connected via fiber optic cable to a BBU and have built-in MIMO capability for optimal signal performance and data throughput. Also, Small Cell nodes are smaller in size compared to traditional analog DAS RRH (Remote Radio Head) units.<\/p>\n<p>We earlier mentioned CPRI. It is another term you will sooner or later hear. CPRI stands for Common Public Radio Interface. It\u2019s a standard developed by the likes of Nokia-Siemens, Alcatel Lucent, Ericsson and Huawai. Basically it\u2019s a protocol allowing communication between digitized radio units like a BBU and remote nodes such as MROs and MCOs. The name CPRI is deceptive because it implies an open-source like platform, but there is nothing open about CPRI. This is in fact the very reason Digital DAS is not making further inroads into the US wireless market. Every manufacturer has their own proprietary version of CPRI protocol. Therefore, DAS vendors can\u2019t build a system that interfaces with every BBU in the market thus defeating the very purpose of a neutral DAS concept. Carriers like Verizon buys BBUs from multiple vendors and each has their own version of CPRI protocol. There is no single DAS system out there that plugs into all vendor equipment at the same time.<\/p>\n<p>Chipsets manufactured by companies like Qualcomm are becoming less and less expensive. Chipsets allow digital-to-analog and analog-to-digital conversions one frequency or band at a time. Everything from smartphones and WiFi routers to Small Cell nodes like MROs and MCOs have one. However, chipset manufacturers haven\u2019t yet made available a low-cost and commercially viable product that handles multiple frequencies. This creates a problem for Small Cell deployments. Every carrier will have their own version of Small Cell nodes because wireless carriers occupy and operate under different spectrum and frequency bands. Venues and city municipalities then have to deal with multiple small cell nodes hanging from light poles or placed inside buildings. Such scenes are not aesthetically pleasing and some DAS integrators have to deal with strict ordinances banning installations that include multiple nodes visible to the public.<\/p>\n<p>Density is another term being thrown around the DAS world right now. Basically, it means to maximize network capacity ultimately benefiting customer experience by employing various distribution methods including macrocells, oDAS, iDAS, Small Cells and WiFi. All these different distribution schemes concentrated in a single area create a hub known as a heterogeneous network or also known as HetNet.\u00a0 Fancy terms put aside, the reason behind this effort is simple. Wireless carriers want high data throughput and reliable coverage because their customers demand it. For whatever reason, we modern creatures can\u2019t function without GPS, find restaurants without reading Yelp reviews, exercise without listening to music, stop to smell the flowers without checking our email and updating our Facebook status first. Oh, don\u2019t forget uploading photos of our food to Instagram before we eat.<\/p>\n<p>&nbsp;<\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; admin_label=&#8221;Text &#8211; Published&#8221; text_font=&#8221;&#8211;et_global_body_font|300|||||||&#8221; text_text_color=&#8221;#303030&#8243; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<\/p>\n<p><em>Published: Sep, 2015<\/em><\/p>\n<p>[\/et_pb_text][et_pb_divider color=&#8221;#0049b7&#8243; divider_style=&#8221;dotted&#8221; divider_weight=&#8221;1px&#8221; show_divider_tablet=&#8221;&#8221; show_divider_phone=&#8221;&#8221; show_divider_last_edited=&#8221;on|phone&#8221; disabled_on=&#8221;on|on|off&#8221; admin_label=&#8221;Blue Full Divider 1px Dotted&#8221; _builder_version=&#8221;4.27.4&#8243; width=&#8221;100%&#8221; custom_margin=&#8221;||0px||false|false&#8221; custom_padding=&#8221;||0px||false|false&#8221; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221; global_module=&#8221;7869&#8243; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_divider][\/et_pb_column_inner][\/et_pb_row_inner][\/et_pb_column][et_pb_column type=&#8221;1_4&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_sidebar orientation=&#8221;right&#8221; area=&#8221;et_pb_widget_area_31&#8243; admin_label=&#8221;Sidebar 2025&#8243; _builder_version=&#8221;4.27.4&#8243; header_font=&#8221;&#8211;et_global_heading_font|600|||||||&#8221; body_font=&#8221;&#8211;et_global_heading_font|600|||||||&#8221; body_font_size=&#8221;16px&#8221; border_width_left=&#8221;1px&#8221; border_color_left=&#8221;#0049b7&#8243; border_style_left=&#8221;dotted&#8221; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221; global_module=&#8221;9221&#8243; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_sidebar][\/et_pb_column][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;CONTACT SECTION 05232021&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#0049b7&#8243; collapsed=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; global_module=&#8221;7862&#8243; theme_builder_area=&#8221;post_content&#8221;][et_pb_row column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; background_enable_color=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_text admin_label=&#8221;Text &#8211; Stay Connected&#8221; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; text_text_color=&#8221;#ffffff&#8221; text_font_size=&#8221;20px&#8221; background_layout=&#8221;dark&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<\/p>\n<p>STAY CONNECTED:<\/p>\n<p>[\/et_pb_text][et_pb_signup mailchimp_list=&#8221;DASpedia Website Optin|e8f40bdf7c&#8221; success_message=&#8221;Thank you. We will keep you updated. &#8221; description=&#8221;<\/p>\n<p>Opt in to receive DASpedia updates.<\/p>\n<p>&#8221; use_spam_service=&#8221;on&#8221; recaptcha_list=&#8221;DASpedia Website|DASpedia Website-0&#8243; module_id=&#8221;EmailOptin&#8221; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; header_font_size=&#8221;24px&#8221; result_message_font_size=&#8221;24px&#8221; background_color=&#8221;#0049b7&#8243; custom_button=&#8221;on&#8221; button_text_size=&#8221;20px&#8221; width=&#8221;70%&#8221; custom_margin=&#8221;|0px||0px|false|false&#8221; custom_padding=&#8221;0px|0px|0px|0px|false|false&#8221; custom_css_newsletter_button=&#8221;max-width:200px&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_signup][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_text admin_label=&#8221;Text &#8211; Follow Us&#8221; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; text_text_color=&#8221;#ffffff&#8221; text_font_size=&#8221;20px&#8221; background_layout=&#8221;dark&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<\/p>\n<p>FOLLOW US:<\/p>\n<p>[\/et_pb_text][et_pb_social_media_follow icon_color=&#8221;#ffffff&#8221; use_icon_font_size=&#8221;on&#8221; icon_font_size=&#8221;24px&#8221; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;rgba(0,0,0,0)&#8221; text_orientation=&#8221;left&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_social_media_follow_network social_network=&#8221;linkedin&#8221; url=&#8221;https:\/\/www.linkedin.com\/company\/daspedia\/&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#2EA3F2&#8243; background_enable_color=&#8221;on&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; follow_button=&#8221;off&#8221; url_new_window=&#8221;on&#8221;]linkedin[\/et_pb_social_media_follow_network][et_pb_social_media_follow_network social_network=&#8221;twitter&#8221; url=&#8221;https:\/\/twitter.com\/DASpedia&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#2EA3F2&#8243; background_enable_color=&#8221;on&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; follow_button=&#8221;off&#8221; url_new_window=&#8221;on&#8221;]twitter[\/et_pb_social_media_follow_network][et_pb_social_media_follow_network social_network=&#8221;youtube&#8221; url=&#8221;https:\/\/www.youtube.com\/channel\/UCqSbSkrwgUvQitATMoIBGww&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#2EA3F2&#8243; background_enable_color=&#8221;on&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; follow_button=&#8221;off&#8221; url_new_window=&#8221;on&#8221;]youtube[\/et_pb_social_media_follow_network][\/et_pb_social_media_follow][et_pb_text admin_label=&#8221;Text &#8211; Contact us&#8221; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; text_text_color=&#8221;#ffffff&#8221; header_2_text_color=&#8221;#ffffff&#8221; header_2_font_size=&#8221;20px&#8221; background_layout=&#8221;dark&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<\/p>\n<h2>CONTACT US:<\/h2>\n<p>TEL: 1 310 845 6458<\/p>\n<p>EMAIL: <span style=\"color: #2ea3f2;\"><a style=\"color: #2ea3f2;\" href=\"mailto:INFO@DASPEDIA.COM\">INFO@DASPEDIA.COM<\/a><\/span><\/p>\n<p>[\/et_pb_text][et_pb_divider divider_style=&#8221;dotted&#8221; divider_position=&#8221;center&#8221; divider_weight=&#8221;2px&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; max_width=&#8221;70%&#8221; module_alignment=&#8221;left&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_divider][et_pb_text admin_label=&#8221;Text &#8211; 5G to 474747&#8243; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; text_text_color=&#8221;#ffffff&#8221; header_2_text_color=&#8221;#ffffff&#8221; header_2_font_size=&#8221;20px&#8221; background_layout=&#8221;dark&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<\/p>\n<h2>TEXT &#8220;5G&#8221; to 474747:<\/h2>\n<p>Opt in to receive text messages from DASpedia.<\/p>\n<p>&nbsp;<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p><!-- Simple Share Buttons Adder (8.5.3) simplesharebuttons.com --><div class=\"ssba-modern-2 ssba ssbp-wrap alignleft ssbp--theme-1\"><div style=\"text-align:left\"><span class=\"ssba-share-text\">Share it via...<\/span><ul class=\"ssbp-list\"><li class='ssbp-li--facebook'><a data-site=\"facebook\" class=\"ssba_facebook_share ssba_share_link ssbp-facebook ssbp-btn\" href=\"https:\/\/www.facebook.com\/sharer.php?t=Analog or Digital DAS System&u=https:\/\/daspedia.com\/wp-json\/wp\/v2\/pages\/163\"  target=_blank  style=\"color:#4267B2; background-color: #4267B2; height: 40px; width: 40px; \" ><span><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"#fff\" preserveAspectRatio=\"xMidYMid meet\" height=\"1em\" width=\"1em\" viewBox=\"0 0 40 40\">\n  <g>\n    <path d=\"m21.7 16.7h5v5h-5v11.6h-5v-11.6h-5v-5h5v-2.1c0-2 0.6-4.5 1.8-5.9 1.3-1.3 2.8-2 4.7-2h3.5v5h-3.5c-0.9 0-1.5 0.6-1.5 1.5v3.5z\"><\/path>\n  <\/g>\n<\/svg>\n\n<\/span><span class=\"color-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"28\" viewBox=\"0 0 16 28\">\n  <path fill=\"#3B5998\" d=\"M10.7,10.7 L15.7,10.7 L15.7,15.7 L10.7,15.7 L10.7,27.3 L5.7,27.3 L5.7,15.7 L0.7,15.7 L0.7,10.7 L5.7,10.7 L5.7,8.6 C5.7,6.6 6.3,4.1 7.5,2.7 C8.8,1.4 10.3,0.7 12.2,0.7 L15.7,0.7 L15.7,5.7 L12.2,5.7 C11.3,5.7 10.7,6.3 10.7,7.2 L10.7,10.7 Z\"\/>\n<\/svg>\n<\/span><div title=\"Facebook\" class=\"ssbp-text\">Facebook<\/div><\/a><\/li><li class='ssbp-li--twitter'><a data-site=\"twitter\" class=\"ssba_twitter_share ssba_share_link ssbp-twitter ssbp-btn\" href=\"https:\/\/twitter.com\/intent\/tweet?text=Analog or Digital DAS System&url=https:\/\/daspedia.com\/wp-json\/wp\/v2\/pages\/163&via=\"  target=_blank  style=\"color:#000000; background-color: #000000; height: 40px; width: 40px; \" ><span><svg width=\"25\" height=\"25\" viewBox=\"0 0 25 25\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n    <rect width=\"25\" height=\"25\" \/>\n    <path d=\"M14.4821 11.6218L21.0389 4H19.4852L13.7919 10.6179L9.24467 4H4L10.8763 14.0074L4 22H5.55385L11.5661 15.0113L16.3683 22H21.613L14.4821 11.6218ZM6.11371 5.16972H8.50031L19.4859 20.8835H17.0993L6.11371 5.16972Z\" fill=\"white\"\/>\n<\/svg>\n<\/span><span class=\"color-icon\"><svg width=\"25\" height=\"25\" viewBox=\"0 0 25 25\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n\t<rect width=\"25\" height=\"25\" \/>\n\t<path d=\"M14.4821 11.6218L21.0389 4H19.4852L13.7919 10.6179L9.24467 4H4L10.8763 14.0074L4 22H5.55385L11.5661 15.0113L16.3683 22H21.613L14.4821 11.6218ZM6.11371 5.16972H8.50031L19.4859 20.8835H17.0993L6.11371 5.16972Z\" fill=\"#000000\"\/>\n<\/svg>\n<\/span><div title=\"Twitter\" class=\"ssbp-text\">Twitter<\/div><\/a><\/li><li class='ssbp-li--linkedin'><a data-site=\"linkedin\" class=\"ssba_linkedin_share ssba_share_link ssbp-linkedin ssbp-btn\" href=\"https:\/\/www.linkedin.com\/shareArticle?title=Analog or Digital DAS System&url=https:\/\/daspedia.com\/wp-json\/wp\/v2\/pages\/163\"  target=_blank  style=\"color:#0077b5; background-color: #0077b5; height: 40px; width: 40px; \" ><span><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"#fff\" preserveAspectRatio=\"xMidYMid meet\" height=\"1em\" width=\"1em\" viewBox=\"0 0 40 40\">\n  <g>\n    <path d=\"m13.3 31.7h-5v-16.7h5v16.7z m18.4 0h-5v-8.9c0-2.4-0.9-3.5-2.5-3.5-1.3 0-2.1 0.6-2.5 1.9v10.5h-5s0-15 0-16.7h3.9l0.3 3.3h0.1c1-1.6 2.7-2.8 4.9-2.8 1.7 0 3.1 0.5 4.2 1.7 1 1.2 1.6 2.8 1.6 5.1v9.4z m-18.3-20.9c0 1.4-1.1 2.5-2.6 2.5s-2.5-1.1-2.5-2.5 1.1-2.5 2.5-2.5 2.6 1.2 2.6 2.5z\"><\/path>\n  <\/g>\n<\/svg>\n\n<\/span><span class=\"color-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"50px\" height=\"50px\" viewBox=\"0 0 50 50\" version=\"1.1\">\n<g id=\"surface97807\">\n<path style=\" stroke:none;fill-rule:nonzero;fill:rgb(0%,46.666667%,70.980392%);fill-opacity:1;\" d=\"M 8 3.007812 C 4.53125 3.007812 2.007812 5.089844 2.007812 7.949219 C 2.007812 10.820312 4.589844 12.988281 8 12.988281 C 11.46875 12.988281 13.988281 10.871094 13.988281 7.890625 C 13.832031 5.019531 11.359375 3.007812 8 3.007812 Z M 3 15 C 2.449219 15 2 15.449219 2 16 L 2 45 C 2 45.550781 2.449219 46 3 46 L 13 46 C 13.550781 46 14 45.550781 14 45 L 14 16 C 14 15.449219 13.550781 15 13 15 Z M 18 15 C 17.449219 15 17 15.449219 17 16 L 17 45 C 17 45.550781 17.449219 46 18 46 L 27 46 C 27.550781 46 28 45.550781 28 45 L 28 29.5 C 28 27.128906 29.820312 25.199219 32.140625 25.019531 C 32.261719 25 32.378906 25 32.5 25 C 32.621094 25 32.738281 25 32.859375 25.019531 C 35.179688 25.199219 37 27.128906 37 29.5 L 37 45 C 37 45.550781 37.449219 46 38 46 L 47 46 C 47.550781 46 48 45.550781 48 45 L 48 28 C 48 21.53125 44.527344 15 36.789062 15 C 33.269531 15 30.609375 16.359375 29 17.488281 L 29 16 C 29 15.449219 28.550781 15 28 15 Z M 18 15 \"\/>\n<\/g>\n<\/svg>\n<\/span><div title=\"Linkedin\" class=\"ssbp-text\">Linkedin<\/div><\/a><\/li><li class='ssbp-li--reddit'><a data-site=\"reddit\" class=\"ssba_reddit_share ssba_share_link ssbp-reddit ssbp-btn\" href=\"https:\/\/reddit.com\/submit?title=Analog or Digital DAS System&url=https:\/\/daspedia.com\/wp-json\/wp\/v2\/pages\/163\"  target=_blank  style=\"color:#ff4500; background-color: #ff4500; height: 40px; width: 40px; \" ><span><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"#fff\" preserveAspectRatio=\"xMidYMid meet\" height=\"1em\" width=\"1em\" viewBox=\"0 0 40 40\">\n  <g>\n    <path d=\"m40 18.9q0 1.3-0.7 2.3t-1.7 1.7q0.2 1 0.2 2.1 0 3.5-2.3 6.4t-6.5 4.7-9 1.7-8.9-1.7-6.4-4.7-2.4-6.4q0-1.1 0.2-2.1-1.1-0.6-1.8-1.6t-0.7-2.4q0-1.8 1.3-3.2t3.1-1.3q1.9 0 3.3 1.4 4.8-3.3 11.5-3.6l2.6-11.6q0-0.3 0.3-0.5t0.6-0.1l8.2 1.8q0.4-0.8 1.2-1.3t1.8-0.5q1.4 0 2.4 1t0.9 2.3-0.9 2.4-2.4 1-2.4-1-0.9-2.4l-7.5-1.6-2.3 10.5q6.7 0.2 11.6 3.6 1.3-1.4 3.2-1.4 1.8 0 3.1 1.3t1.3 3.2z m-30.7 4.4q0 1.4 1 2.4t2.4 1 2.3-1 1-2.4-1-2.3-2.3-1q-1.4 0-2.4 1t-1 2.3z m18.1 8q0.3-0.3 0.3-0.6t-0.3-0.6q-0.2-0.2-0.5-0.2t-0.6 0.2q-0.9 0.9-2.7 1.4t-3.6 0.4-3.6-0.4-2.7-1.4q-0.2-0.2-0.5-0.2t-0.6 0.2q-0.3 0.2-0.3 0.6t0.3 0.6q1 0.9 2.6 1.5t2.8 0.6 2 0.1 2-0.1 2.8-0.6 2.6-1.6z m-0.1-4.6q1.4 0 2.4-1t1-2.4q0-1.3-1-2.3t-2.4-1q-1.3 0-2.3 1t-1 2.3 1 2.4 2.3 1z\"><\/path>\n  <\/g>\n<\/svg>\n\n<\/span><span class=\"color-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"40\" height=\"38\" viewBox=\"0 0 40 38\">\n  <defs>\n    <path id=\"reddit-white-a\" d=\"M40,19.9 C40,20.7666667 39.7666667,21.5333333 39.3,22.2 C38.8333333,22.8666667 38.2666667,23.4333333 37.6,23.9 C37.7333333,24.5666667 37.8,25.2666667 37.8,26 C37.8,28.3333333 37.0333333,30.4666667 35.5,32.4 C33.9666667,34.3333333 31.8,35.9 29,37.1 C26.2,38.3 23.2,38.8666667 20,38.8 C16.8,38.7333333 13.8333333,38.1666667 11.1,37.1 C8.36666667,36.0333333 6.23333333,34.4666667 4.7,32.4 C3.16666667,30.3333333 2.36666667,28.2 2.3,26 C2.3,25.2666667 2.36666667,24.5666667 2.5,23.9 C1.76666667,23.5 1.16666667,22.9666667 0.7,22.3 C0.233333333,21.6333333 -4.4408921e-16,20.8333333 -4.4408921e-16,19.9 C-4.4408921e-16,18.7 0.433333333,17.6333333 1.3,16.7 C2.16666667,15.7666667 3.2,15.3333333 4.4,15.4 C5.66666667,15.4 6.76666667,15.8666667 7.7,16.8 C10.9,14.6 14.7333333,13.4 19.2,13.2 L21.8,1.6 C21.8,1.4 21.9,1.23333333 22.1,1.1 C22.3,0.966666667 22.5,0.933333333 22.7,1 L30.9,2.8 C31.1666667,2.26666667 31.5666667,1.83333333 32.1,1.5 C32.6333333,1.16666667 33.2333333,1 33.9,1 C34.8333333,1 35.6333333,1.33333333 36.3,2 C36.9666667,2.66666667 37.2666667,3.43333333 37.2,4.3 C37.1333333,5.16666667 36.8333333,5.96666667 36.3,6.7 C35.7666667,7.43333333 34.9666667,7.76666667 33.9,7.7 C32.8333333,7.63333333 32.0333333,7.3 31.5,6.7 C30.9666667,6.1 30.6666667,5.3 30.6,4.3 L23.1,2.7 L20.8,13.2 C25.2666667,13.3333333 29.1333333,14.5333333 32.4,16.8 C33.2666667,15.8666667 34.3333333,15.4 35.6,15.4 C36.8,15.4 37.8333333,15.8333333 38.7,16.7 C39.5666667,17.5666667 40,18.6333333 40,19.9 Z M9.3,24.3 C9.3,25.2333333 9.63333333,26.0333333 10.3,26.7 C10.9666667,27.3666667 11.7666667,27.7 12.7,27.7 C13.6333333,27.7 14.4,27.3666667 15,26.7 C15.6,26.0333333 15.9333333,25.2333333 16,24.3 C16.0666667,23.3666667 15.7333333,22.6 15,22 C14.2666667,21.4 13.5,21.0666667 12.7,21 C11.7666667,21 10.9666667,21.3333333 10.3,22 C9.63333333,22.6666667 9.3,23.4333333 9.3,24.3 Z M27.4,32.3 C27.6,32.1 27.7,31.9 27.7,31.7 C27.7,31.5 27.6,31.3 27.4,31.1 C27.2666667,30.9666667 27.1,30.9 26.9,30.9 C26.7,30.9 26.5,30.9666667 26.3,31.1 C25.7,31.7 24.8,32.1666667 23.6,32.5 C22.4,32.8333333 21.2,32.9666667 20,32.9 C18.8,32.8333333 17.6,32.7 16.4,32.5 C15.2,32.3 14.3,31.8333333 13.7,31.1 C13.5666667,30.9666667 13.4,30.9 13.2,30.9 C13,30.9 12.8,30.9666667 12.6,31.1 C12.4,31.2333333 12.3,31.4333333 12.3,31.7 C12.3,31.9666667 12.4,32.1666667 12.6,32.3 C13.2666667,32.9 14.1333333,33.4 15.2,33.8 C16.2666667,34.2 17.2,34.4 18,34.4 C18.8,34.4 19.4666667,34.4333333 20,34.5 C20.5333333,34.5666667 21.2,34.5333333 22,34.4 C22.8,34.2666667 23.7333333,34.0666667 24.8,33.8 C25.8666667,33.5333333 26.7333333,33 27.4,32.2 L27.4,32.3 Z M27.3,27.7 C28.2333333,27.7 29.0333333,27.3666667 29.7,26.7 C30.3666667,26.0333333 30.7,25.2333333 30.7,24.3 C30.7,23.4333333 30.3666667,22.6666667 29.7,22 C29.0333333,21.3333333 28.2333333,21 27.3,21 C26.4333333,21 25.6666667,21.3333333 25,22 C24.3333333,22.6666667 24,23.4333333 24,24.3 C24,25.1666667 24.3333333,25.9666667 25,26.7 C25.6666667,27.4333333 26.4333333,27.7666667 27.3,27.7 Z\"\/>\n  <\/defs>\n  <g fill=\"none\" transform=\"translate(0 -1)\">\n    <use fill=\"#FFF\" fill-rule=\"evenodd\" xlink:href=\"#reddit-white-a\"\/>\n    <use fill=\"#FF4500\" fill-rule=\"evenodd\" xlink:href=\"#reddit-white-a\"\/>\n  <\/g>\n<\/svg>\n<\/span><div title=\"Reddit\" class=\"ssbp-text\">Reddit<\/div><\/a><\/li><li class='ssbp-li--outlook'><a data-site=\"outlook\" class=\"ssba_outlook_share ssba_share_link ssbp-outlook ssbp-btn\" href=\"https:\/\/outlook.live.com\/mail\/deeplink\/compose?path=mail inbox&subject=&body=\"  target=_blank  style=\"color:#3070CB; background-color: #3070CB; height: 40px; width: 40px; \" ><span><svg width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M0 2.25352V17.5587L11.7718 20V0L0 2.25352ZM5.93071 13.4655C2.18849 13.2268 2.57391 6.55516 6.01807 6.50215C9.70772 6.74336 9.34576 13.4123 5.93071 13.4655ZM5.98466 7.80844C4.01315 7.94383 4.10142 12.1212 5.95425 12.1547C7.91726 12.0296 7.80198 7.8409 5.98466 7.80844ZM13.7776 10.4691C13.9554 10.5983 14.1695 10.4691 14.1695 10.4691C13.9561 10.5983 20 6.62762 20 6.62762V13.8179C20 14.6005 19.4934 14.9288 18.9238 14.9288H12.5154L12.5158 9.61203L13.7776 10.4691ZM12.5161 4.24039V8.1525L13.8983 9.01332C13.9348 9.02387 14.0138 9.02461 14.0502 9.01332L19.9992 5.04637C19.9992 4.57691 19.5564 4.24039 19.3065 4.24039H12.5161Z\" fill=\"white\"\/><\/svg>\n<\/span><span class=\"color-icon\"><svg width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n<path d=\"M0 2.25352V17.5587L11.7718 20V0L0 2.25352ZM5.93071 13.4655C2.18849 13.2268 2.57391 6.55516 6.01807 6.50215C9.70772 6.74336 9.34576 13.4123 5.93071 13.4655ZM5.98466 7.80844C4.01315 7.94383 4.10142 12.1212 5.95425 12.1547C7.91726 12.0296 7.80198 7.8409 5.98466 7.80844ZM13.7776 10.4691C13.9554 10.5983 14.1695 10.4691 14.1695 10.4691C13.9561 10.5983 20 6.62762 20 6.62762V13.8179C20 14.6005 19.4934 14.9288 18.9238 14.9288H12.5154L12.5158 9.61203L13.7776 10.4691ZM12.5161 4.24039V8.1525L13.8983 9.01332C13.9348 9.02387 14.0138 9.02461 14.0502 9.01332L19.9992 5.04637C19.9992 4.57691 19.5564 4.24039 19.3065 4.24039H12.5161Z\" fill=\"#3070CB\"\/>\n<\/svg>\n<\/span><div title=\"Outlook\" class=\"ssbp-text\">Outlook<\/div><\/a><\/li><\/ul><\/div><\/div>Typical iDAS installations today are considered analog. This is because the BTS converts the digital feed into analog RF form (see Figure 3.) The analog RF signals are attenuated and fed into a multi-carrier DAS Head-End for distribution. Most DAS Head-End equipment distribute the signals to a RRU (Remote Radio Unit) via fiber optic cable. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"<p>Typical iDAS installations today are considered analog. This is because the BTS converts the digital feed into analog RF form. The analog RF signals are attenuated and fed into a multi-carrier DAS Head-End for distribution. Most DAS Head-End equipment distribute the signals to <strong>RRU<\/strong>s (Remote Radio Unit) via fiber optic cable. That doesn\u2019t mean the signal is turned back into a digital form, but rather that DAS Head-End units have built-in optical transceivers that perform electric-to-optical (<strong>E\/O<\/strong>) and optical-to-electric (<strong>O\/E<\/strong>) conversion. This is called RF-over-Fiber.\u00a0 Optical transceivers use analog lasers to perform such tasks using direct modulation, which is the process of manipulating a carrier signal with another signal. An analog RF transmission is one continuous wave which can\u2019t be interrupted or resent (unlike digital data.) Attempting to do so results in the loss of the communication. This is where you\u2019ll hear industry terms like noise figure (<strong>NF<\/strong>), signal-to-noise ratio (<strong>SNR<\/strong>), and Spur Free Dynamic Range (<strong>SFDR<\/strong>).<\/p>","_et_gb_content_width":"","footnotes":""},"class_list":["post-163","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/daspedia.com\/wp-json\/wp\/v2\/pages\/163","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/daspedia.com\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/daspedia.com\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/daspedia.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/daspedia.com\/wp-json\/wp\/v2\/comments?post=163"}],"version-history":[{"count":9,"href":"https:\/\/daspedia.com\/wp-json\/wp\/v2\/pages\/163\/revisions"}],"predecessor-version":[{"id":256055,"href":"https:\/\/daspedia.com\/wp-json\/wp\/v2\/pages\/163\/revisions\/256055"}],"wp:attachment":[{"href":"https:\/\/daspedia.com\/wp-json\/wp\/v2\/media?parent=163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}