Performance Analysis of Coded Secondary Relaying in Overlay Cognitive Radio Networks

The authors study the error and Diversity-Multiplexing Tradeoff (DMT) performance of a (secondary) multi-user relay network, where a class of finite field network codes are applied in the relays to efficiently provide spatial diversity. To eliminate spectral efficiency loss induced by half-duplex limitation they adopt the cognitive radio overlay spectrum sharing concept and consider aligning the relays' operation with that of a primary system. To compensate the interference introduced by the secondary relaying, the secondary destination also transmits the primary signals to boost the signal power of the primary system.

Provided by: Institute of Electrical & Electronic Engineers Topic: Mobility Date Added: Mar 2012 Format: PDF

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