Cooperative spectrum sensing with transmit and relay diversity in cognitive radio networks - [transaction letters]
作者： Wei Zhang , Khaled Letaief
关键词:
摘要: In the letter problem of cooperative spectrum sensing is investigated in cognitive radio (CR) networks over Rayleigh fading channels. By taking into account error effect on decision reporting, a general performance analysis given. The analytical detection results show that limited by probability reporting errors. To deal with this limitation, we propose transmit diversity based method. regarding multiple CRs as virtual antenna array, space-time coding and space-frequency are applied CR flat-fading frequency-selective channels, respectively. Moreover, relay approach to increase when some heavy shadowing. It then shown that, combined algebraic coding, can further improve performance.
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