SHERP

Optimum Power Allocation with Transmit Beamforming in Correlated MISO Relay Channels
송신 빔포밍과 결합한 MISO 릴레이 채널에서의 최적 전력 할당 기법

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Authors
Cho, Hee-Nam; Lee, Jin-Woo; Lee, Yong-Hwan
Issue Date
2008
Publisher
Korea Information and Communications Society = 한국통신학회
Citation
제21회 신호처리합동학술대회논문집, 2008년
Keywords
beamformingmax-min problempower allocationregenerative relay system
Abstract
This paper proposes an optimum power allocation strategy to maximize the end-to-end capacity of regenerative relay channels with transmit beamforming. An achievable rate for this model is first derived, and is optimized in terms of spectral efficiency. This optimization is a max-min problem. A general technique for solving this max-min problem is applied to derive the optimum power allocation that satisfies the sum power constraints at the source and relay. The upper bound of the regenerative relay channels allocated by the proposed scheme is also derived. The analytic and simulation results show that the optimum power allocation highly depends on not only the average channel gain but also the achievable beamforming gain of the first hop and the second hop channel
Language
English
URI
http://hdl.handle.net/10371/7034
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Others_전기·정보공학부
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