On the Performance of Transmit Antenna Selection Based on Shadowing Side Information

TL;DR

This paper proposes a shadowing-based transmit antenna selection scheme that reduces feedback and complexity, providing analytical performance metrics under generalized fading models and validating results with simulations.

Contribution

It introduces a novel antenna selection method based on shadowing information and derives exact and asymptotic performance expressions under generalized fading conditions.

Findings

Reduced feedback and complexity in antenna selection

Closed-form expressions for outage and error probabilities

Validation of theoretical results with simulations

Abstract

In this paper, a transmit antenna selection scheme, which is based on shadowing side information, is investigated. In this scheme, the selected single transmit antenna provides the highest shadowing coefficient between transmitter and receiver. By the proposed technique, the frequency of the usage of the feedback channel from the receiver to the transmitter and also channel estimation complexity at the receiver can be reduced. We study the performance of our proposed technique and in the analysis, we consider an independent but not identically distributed Generalized-K composite fading model. More specifically exact and closed-form expressions for the outage probability, the moment generating function, the moments of signal-to-noise ratio, and the average symbol error probability are derived. In addition, asymptotic outage probability and symbol error probability expressions are also presented in order to investigate the diversity order and the array gain. Finally, our theoretical performance results are validated by Monte Carlo simulations.