標題: Robust Distributed Beamforming Design in Amplify-and-Forward Relay Systems with Multiple User Pairs
作者: Hsieh, Pei-Wen
Lin, Ying-Tsung
Chen, Sau-Gee
電子物理學系
Department of Electrophysics
關鍵字: Distributed beamforming;coorperative communication;amplify-and-forward
公開日期: 2015
摘要: In this work, a signal-to-interference-plus-noise ratio (SINR)-based robust distributed beamforming scheme is proposed for one-way amplify-and-forward (AF) relay systems with multiple user pairs. The proposed scheme obtains its optimal beam vectors by utilizing convex semi-definite programming (SDP) optimization with newly derived bounds for signal and interference powers. Compared with existing works, the proposed scheme has much higher probability of obtaining the optimal solution than schemes applying approximate bounds exploiting Cauchy-Swartz (CS) inequality. In addition, in terms of transmit power consumption, the proposed scheme requires less transmit power than existing works while still satisfying the SINR constraints. Simulation results also demonstrate that the proposed SDP-based method outperforms the existing SDP-based methods.
URI: http://hdl.handle.net/11536/135479
ISBN: 978-1-5090-0053-1
ISSN: 1848-1744
期刊: 2015 23RD INTERNATIONAL CONFERENCE ON SOFTWARE, TELECOMMUNICATIONS AND COMPUTER NETWORKS (SOFTCOM)
起始頁: 371
結束頁: 375
Appears in Collections:Conferences Paper