Joint Power Control and Beamforming Codebook Design for MISO Channels with Limited Feedback

Abstract— This paper investigates the joint design and optimization of the power control and beamforming codebooks for the single-user multiple-input single-output (MISO) wireless systems with a rate-limited feedback link. The problem is cast in the form of minimizing the outage probability subject to the transmit power constraint and cardinality constraints on the beamforming and power codebooks. We show that by appropriately choosing and fixing the beamforming codebook and optimizing the power codebook for that beamforming codebook, it is possible to achieve a performance very close to the optimal joint optimization. Further, this paper investigates the optimal tradeoffs between beamforming and power codebook sizes for different number of feedback bits and transmit antennas. Given a target outage probability, our results provide the optimal codebook sizes independent of the target rate. As the outage probability decreases, we show that the optimal joint design should use fewer fee...

• Type: Conference
• Year: 2009
• Where: GLOBECOM
• Authors: Behrouz Khoshnevis, Wei Yu
• Keywords: Beamforming, GLOBECOM 2009, Power Codebook, Power Control, Telecommunications