Networking

Amplify-and-Forward Relay Transmission with End-to-End Antenna Selection

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Executive Summary

In this paper, the performance of a dual-hop Amplify-and-Forward (AF) multi-antenna relay network, with end-to-end (e2e) best antenna selection, is investigated. To investigate the performance of this system, the authors first derive the exact outage probability in closed-form. It is then used to obtain expressions for e2e SNR moments and the average Symbol/Bit Error Rate (SER/BER) valid for a large class of practical modulation schemes. A simple and accurate BER approximation is also derived to quantify the performance at high SNR. Their analytical results, show that the e2e antenna pair selection scheme achieves the same diversity order as for the case where all antennas are used. To further confirm the validity of their analysis, Monte Carlo simulation results are also presented.

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