• KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

Joint Relay-and-Antenna Selection and Power Allocation for AF MIMO Two-way Relay Networks


Abstract

In this paper, we present a joint relay-and-antenna selection and power allocation strategy for multiple-input multi-output (MIMO) amplify-and-forward (AF) two-way relay networks (TWRNs). In our approach, we select the best transmit and receive antennas at the two sources, a best relay and a best transmit and receive antenna at the selected relay based on maximizing the minimum of the end-to-end received signal-to-noise-ratios (SNRs) under a total transmit power constraints. We obtained the closed-form solution for the optimal power allocation firstly. Then with the optimal allocation solution we found, we can reduce the joint relay-and-antenna selection to a simpler problem. Besides, the overall outage probability is investigated and a tight closed-form approximation is derived, which provides a method to evaluate the outage performance easily and fast. Simulation results are presented to verify the analysis.


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Cite this article

[IEEE Style]
Wang xiaoxiang, Zhou Jia and Wang DongYu, "Joint Relay-and-Antenna Selection and Power Allocation for AF MIMO Two-way Relay Networks," KSII Transactions on Internet and Information Systems, vol. 10, no. 3, pp. 1016-1033, 2016. DOI: 10.3837/tiis.2016.03.004

[ACM Style]
xiaoxiang, W., Jia, Z., and DongYu, W. 2016. Joint Relay-and-Antenna Selection and Power Allocation for AF MIMO Two-way Relay Networks. KSII Transactions on Internet and Information Systems, 10, 3, (2016), 1016-1033. DOI: 10.3837/tiis.2016.03.004