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Interference management strategy for multiuser two-way relay networks
by Yong Wang; Liu Yang; Yun Ai; Hui Li; Yueyu Zhang; Fengrong Li
International Journal of Embedded Systems (IJES), Vol. 5, No. 3, 2013
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.
Online publication date: Wed, 09-Oct-2013
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