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arXiv · 2003.07538

MMSE Based Greedy Antenna Selection Scheme for AF MIMO Relay Systems

Ming Ding·Shi Liu·Hanwen Luo·Wen Chen
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Abstract

We propose a greedy minimum mean squared error (MMSE)-based antenna selection algorithm for amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay systems. Assuming equal-power allocation across the multi-stream data, we derive a closed form expression for the mean squared error (MSE) resulted from adding each additional antenna pair. Based on this result, we iteratively select the antenna-pairs at the relay nodes to minimize the MSE. Simulation results show that our algorithm greatly outperforms the existing schemes.

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Ming Ding, Shi Liu, Hanwen Luo, Wen Chen. 2020-03-17. MMSE Based Greedy Antenna Selection Scheme for AF MIMO Relay Systems. https://arxiv.org/abs/2003.07538

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