Journal
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
Volume 12, Issue 11, Pages 5826-5836Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TWC.2013.092013.130279
Keywords
Cognitive radio; cooperative communications; decision fusion; MIMO systems; spectrum sensing
Funding
- project Embedded Systems within the research framework Networks of Excellence, POR Campania FSE, Italy
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This paper deals with spectrum sensing for cognitive radio scenarios where the decision fusion center (DFC) exploits array processing. More specifically, we explore the impact of user cooperation and orthogonal transmissions among secondary users (SUs) on the reporting channel. To this aim four protocols are considered: (i) non-orthogonal and non-cooperative; (ii) orthogonal and non-cooperative; (iii) non-orthogonal and cooperative; (iv) orthogonal and cooperative. The DFC employs maximum ratio combining (MRC) rule and performance are evaluated in terms of complementary receiver operating characteristic (CROC). Analytical results, coupled with Monte Carlo simulations, are presented.
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