A special case of multi-way relay channel: When beamforming is not applicable

Zhongyuan Zhao; Zhiguo Ding; Mugen Peng; Wenbo Wang; Kin K. Leung

doi:10.1109/TWC.2011.052311.101655

A special case of multi-way relay channel: When beamforming is not applicable

Zhongyuan Zhao
, Zhiguo Ding
, Mugen Peng
, Wenbo Wang
, Kin K. Leung

Electrical Engineering

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

In this paper, we study a special case of multi-way relaying channel, to which traditional beamforming cannot achieve the best performance due to insufficient antennas. A new transmission protocol is proposed by aligning the messages from the same pair with the help of relay precoding. As a result, inter-pair interference can be avoided and intra-pair interference can be coped with by using network coding. Then analytic results, such as the ergodic sum rate and the outage probability, are developed for the proposed protocol. The numerical results are also provided to demonstrate the performance of our proposed scheme. To improve the diversity gain of the proposed scheme, an optimal scheme is also presented.

Original language	British English
Article number	5783008
Pages (from-to)	2046-2051
Number of pages	6
Journal	IEEE Transactions on Wireless Communications
Volume	10
Issue number	7
DOIs	https://doi.org/10.1109/TWC.2011.052311.101655
State	Published - Jul 2011

Keywords

beamforming
ergodic sum rate
multi-way relay
Network coding
outage probability

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title = "A special case of multi-way relay channel: When beamforming is not applicable",

abstract = "In this paper, we study a special case of multi-way relaying channel, to which traditional beamforming cannot achieve the best performance due to insufficient antennas. A new transmission protocol is proposed by aligning the messages from the same pair with the help of relay precoding. As a result, inter-pair interference can be avoided and intra-pair interference can be coped with by using network coding. Then analytic results, such as the ergodic sum rate and the outage probability, are developed for the proposed protocol. The numerical results are also provided to demonstrate the performance of our proposed scheme. To improve the diversity gain of the proposed scheme, an optimal scheme is also presented.",

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author = "Zhongyuan Zhao and Zhiguo Ding and Mugen Peng and Wenbo Wang and Leung, \{Kin K.\}",

note = "Funding Information: This work was supported in part by the National Natural Science Foundation of China (Grant No. 61072058), the State Major Science and Technology Special Projects (Grant No. 2010ZX03003-003-01), the Fok Ying Tong Education Foundation Application Research Projects (Grant No. 122005), and the Program for New Century Excellent Talents in University. Funding Information: Z. Ding is with the School of Electrical, Electronic, and Computer Engineering, Newcastle University, NE1 7RU, UK (e-mail: [email protected]). Z. Ding was supported by the UK EPSRC under grant number EP/F062079/2.",

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KW - outage probability

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A special case of multi-way relay channel: When beamforming is not applicable

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