Nicolas Schrammar Hamed Farhadi Lars K. Rasmussen Mikael Skoglund Average throughput in AWGN cognitive fading interference channel with multiple secondary pairs. 158-162 2012 CrownCom https://doi.org/10.4108/icst.crowncom.2012.248335 https://ieeexplore.ieee.org/document/6333732/ conf/crowncom/2012 db/conf/crowncom/crowncom2012.html#SchrammarFRS12