Title: Interference management strategy for multiuser two-way relay networks

Authors: Yong Wang; Liu Yang; Yun Ai; Hui Li; Yueyu Zhang; Fengrong Li

Addresses: State Key Laboratory of Integrated Service Networks, Xidian University, 106 mailbox, Xi'an, Shaanxi, China ' State Key Laboratory of Integrated Service Networks, Xidian University, 106 mailbox, Xi'an, Shaanxi, China ' State Key Laboratory of Integrated Service Networks, Xidian University, 106 mailbox, Xi'an, Shaanxi, China ' State Key Laboratory of Integrated Service Networks, Xidian University, 106 mailbox, Xi'an, Shaanxi, China ' State Key Laboratory of Integrated Service Networks, Xidian University, 106 mailbox, Xi'an, Shaanxi, China ' Key Laboratory of Wireless Sensor Network and Communication, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, China

Abstract: We investigate the interference management strategy for multiuser two-way transmission network where multiple pairs of users communicate with their pre-assigned partners, with assistance of an amplify-and-forward relay. The design objective is that the tradeoff between the efficiency and reliability could be achieved as much as possible. By taking advantage of the signal space alignment technique to cancel the multi-user interference, all users can transmit massages to the relay simultaneously over the same channel resource. And a new multiple-input multiple-output (MIMO) precoding matrix is designed to reduce the decoding complexity. Simulation result shows the average sum rate performance of the proposed system, and the achievable degrees of freedom can outperform MU-MIMO scheme and TDMA scheme.

Keywords: multiple-input multiple-output; MIMO precoding matrix; embedded systems; two-way relay networks; interference management; multi-user interference; signal space alignment; simulation.

DOI: 10.1504/IJES.2013.057081

International Journal of Embedded Systems, 2013 Vol.5 No.3, pp.175 - 180

Available online: 09 Oct 2013 *

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