Matches in SemOpenAlex for { <https://semopenalex.org/work/W2062737206> ?p ?o ?g. }
- W2062737206 abstract "We consider a cognitive radio (CR) relay network consisting of a cognitive source, a cognitive destination and a num- ber of cognitive relay nodes that share spectrum with a primary transmitter and receiver. Due to poor channel conditions, the cog- nitive source is unable to communicate directly with the cognitive destination and hence employs the cognitive relays for assistance. We assume that perfect channel state information (CSI) for all links is not available to the CR. Under the assumption of partial and imperfect CSI at the CR system, we propose new robust CR cooperative relay beamformers where either the total relay transmit power or the cognitive destination signal-to-interference- and-noise ratio (SINR) is optimized subject to a constraint on the primary receiver outage probability. We formulate the robust total relay power minimisation and the cognitive destination SINR max- imisation optimisation problems as a convex second order cone program and a semidefinite program, respectively. Cumulative distribution functions of primary receiver and cognitive destina- tion receiver SINR for Rayleigh fading channels are presented. Index Terms—Cognitive radio, robust beamforming, coopera- tive beamforming, interference management, relay, convex op- timisation, power control, beamforming, semidefinite relaxation, outage probability." @default.
- W2062737206 created "2016-06-24" @default.
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- W2062737206 date "2014-11-01" @default.
- W2062737206 modified "2023-09-23" @default.
- W2062737206 title "Robust Cognitive Radio Cooperative Beamforming" @default.
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- W2062737206 doi "https://doi.org/10.1109/twc.2014.2331074" @default.
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