The paper study the capability of Opportunistic Relaying (OR) in multi-antenna selection schemes on independent, Nakagami-m fading channels in Decode-and-Forward (DF) mode. Based on signal-to-noise ratio (SNR), we deduce the representation of error and outage probability for binary phase shift keying (BPSK) with the moment generating function (MGF). The simulation shows the theoretical study validity. Compared with single-antenna OR scheme, the proposed multi-antenna selection schemes can improve the network performance. Using beamforming and maximum ratio combining (MRC), we can prove multiple antennas at OR can obtain remarkable diversity order and system gain.
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