Enhanced beamforming design and sum-rate maximization for two-way multi-relay networks

被引：0
|
作者：
Wei Duan
Yier Yan
Han Hai
Xueqin Jiang
Haiyang Yu
Moon Ho Lee
机构：
[1] Chonbuk National University,Division of Electronic and Information Engineering
[2] Donghua University,School of Information Science and Technology
[3] Guangzhou University,School of Mechanical and Electrical Engineering
来源：
EURASIP Journal on Wireless Communications and Networking | / 2016卷
关键词：
Two-way relay channel; Sum-rate; Cholesky decomposition; Cauchy-Schwarz inequality; Amplify-and-forward;
D O I：
暂无
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学科分类号：
摘要：
In this paper, we investigate an enhanced relay beamforming design for two-way relay networks (TWRN). In order to reduce the computational complexity, we derive a sum of the inverse of the signal-to-noise ratio (SI-SNR) problem equivalent to the objective sum-rate (SR) problem. The SI-SNR problem can be reformulated as a simple optimization problem by using the Cholesky decomposition and Cauchy-Schwarz inequality, and solved by the interior-point method. The numerical results show that the proposed SI-SNR method can not only reduce the computational complexity but also have the same SR performance as that of the conventional works.
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