Sum-rate Maximizing Beamforming Design for Distributed-antenna Based Full-duplex Relay Systems

Xu Xiao-fei; Chen Xiang; Zhao Ming; Zhou Shi-dong; Wang Jing

doi:10.11999/JEIT150450

Volume 37 Issue 11

Nov. 2015

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Article Navigation > Journal of Electronics & Information Technology > 2015 > 37(11): 2657-2663

Xu Xiao-fei, Chen Xiang, Zhao Ming, Zhou Shi-dong, Wang Jing. Sum-rate Maximizing Beamforming Design for Distributed-antenna Based Full-duplex Relay Systems[J]. Journal of Electronics & Information Technology, 2015, 37(11): 2657-2663. doi: 10.11999/JEIT150450

Citation:

Xu Xiao-fei, Chen Xiang, Zhao Ming, Zhou Shi-dong, Wang Jing. Sum-rate Maximizing Beamforming Design for Distributed-antenna Based Full-duplex Relay Systems[J]. Journal of Electronics & Information Technology, 2015, 37(11): 2657-2663. doi: 10.11999/JEIT150450

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Sum-rate Maximizing Beamforming Design for Distributed-antenna Based Full-duplex Relay Systems

doi: 10.11999/JEIT150450

1.
2.
(Department of Electronic Engineering, Tsinghua University, Beijing 100084, China)

Funds:

The National 973 Program of China (2012CB 316002)

Received Date: 2015-04-20
Rev Recd Date: 2015-07-08
Publish Date: 2015-11-19

Abstract

Abstract

Distributed antenna based full-duplex relay system is capable of simultaneous transmission and reception in the same frequency band on two hops, and it provides uniform coverage for cell edge and deep shadow fading areas with increased spectral efficiency. In multiuser scenarios with non-ideal self interference cancellation, beamforming using multiple distributed antennas is proposed to suppress self interference and multiuser interference jointly. A system model for multiuser end-to-end sum-rate maximization under individual power constraints at distributed antennas is established first. Then, a dual-layer iterative algorithm is proposed to resolve the non-convexity of the problem. Simulation results validate the effectiveness of the proposal algorithm, showing that the proposed beamforming design can be used in distributed-antenna based full-duplex relay systems, to suppress both self interference and multiuser interference efficiently, and increase system spectral efficiency significantly.
- Full-duplex relay,
- Distributed antenna,
- Beamforming,
- Interference suppression,
- Sum-rate

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References(20)

References

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