Collaborative Spectrum Sensing for Cognitive Radio Networks [chapter]

Aminmohammad Roozgard, Yahia Tachwali, Nafise Barzigar, Samuel Cheng
2012 Foundation of Cognitive Radio Systems  
1 In the literature, the users of licensed and unlicensed frequency spectra are known as Primary User (PU) and Secondary User (SU) respectively. 5 2 Based on received data of SUs, the FC can combine the information in three ways such as "soft combining", "quantized soft combining" and "hard combining". If SU sends complete local sensing data, the fusion process is classified as soft combining. If SU quantizes the local sensing information, before sending to the FC, the fusion
more » ... process is classified as quantized soft combining. For hard combining fusion, a SU makes decision after sensing and sends one bit as its decision to the FC. 98
doi:10.5772/32226 fatcat:qyr4yfwgmjdf3pg2bohkq2tev4