Abstract

In this paper, we consider a multiple-input multiple-output (MIMO) cooperative communication system with single decode and forward (DF) relay. The system performance is analyzed by using joint antenna and path selection (JAPS) scheme over Nakagami-m fading channel. Then, we propose to use both JAPS and Sub-optimal transmit antenna selection strategy denoted by JAPS/maximum-ratio combining (JAPS/MRC) to improve the coding gain performance. For JAPS, a closed-form expression for the outage probability (OP) is derived. The upper bound of OP in high signal-to-noise ratio (SNR) regime is obtained. For JAPS/MRC a closed-form expression for the OP is also derived. The derived expressions are applicable with any number of antennas, different mi and distinct average SNRs between the paths. Simulation results are presented and show the validity of our theoretical analysis.

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