KKT-based iterative algorithm for beamforming in cognitive radio system |
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| Authors: | ZHANG Cai-hong GUO Li Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts Telecommunications Beijing China |
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| Affiliation: | ZHANG Cai-hong,GUO Li Key Laboratory of Universal Wireless Communications,Ministry of Education,Beijing University of Posts and Telecommunications,Beijing 100876,China |
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| Abstract: | In this paper,we consider the downlink channel of multi-user multi-input single-output(MU-MISO)system in cognitive radio network,where the cognitive base station(CBS)resort to beamforming scheme to relief co-channel interference.The design criterion is to minimize the transmit power at CBS,subject to the signal-to-interference-plus-noise-ratio(SINR)constraints of cognitive users(CUs)and the interference constraints at primary users(PUs).Standard conic optimization packages can handle the problem,however,the... |
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| Keywords: | cognitive radio beamforming SOCP KKT |
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