NDLI: Joint receiver-and-collaborative beamforming for the multi-user relay network in the uplink

Content Provider	IEEE Xplore Digital Library
Author	Chao Wang Ju Liu Hongji Xu Lina Zheng Zheng Dong
Copyright Year	2012
Description	Author affiliation: Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan, China (Chao Wang; Ju Liu; Hongji Xu; Lina Zheng; Zheng Dong)
Abstract	In this paper, the problem of receiver-and-collaborative beamforming is considered for a network which consists of K single-antenna transmitters, R single-antenna relay nodes, and a destination base station equipped with N antennas. For such network, we propose two different design approaches. In the first approach, we jointly design the two beamformers aiming to minimize the total transmit power of the relay nodes, while maintaining the quality of service (QoS) at a predefined level. We apply the genetic algorithm (GA) to obtain the receiver equalizer and relay weight. In the second approach, we design the beamformer by maximizing the smallest $SINR_{k}$ at the receiver subject to the total relay power constraint. The GA is used iteratively to optimize the relay weight and equalizer matrix at the relay nodes and the receiver equalizer. Simulation results demonstrate that significant performance improvements are achieved by our proposed schemes as compared with the existing solutions.
Starting Page	1
Ending Page	5
File Size	208701
Page Count	5
File Format	PDF
ISBN	9781467358309
e-ISBN	9781467358316
e-ISBN	9781467358293
DOI	10.1109/WCSP.2012.6542923
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-25
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multi-user Beamforming Genetic algorithm
Content Type	Text
Resource Type	Article

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