Sheng-Ming Cai

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In this paper, we consider cognitive beamforming for multiple secondary data streams subject to individual signal-to-noise ratio (SNR) requirements for each secondary data stream. In such a cognitive radio system, the secondary user is permitted to use the spectrum allocated to the primary user as long as the caused interference at the primary receiver is(More)
Cognitive users need to be capable of utilizing wireless spectrum without causing harmful interference to primary users. In this paper, we consider a multi-antenna cognitive radio system with multiple secondary data streams subject to individual signal-to-noise-ratio (SNR) constraints. With cognitive beamforming, the secondary transmitter attempts to(More)
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