Finite-SNR Diversity-Multiplexing Tradeoff with Accurate Performance Analysis for Fully Correlated Rayleigh MIMO Channels
Journal
IEEE Transactions on Vehicular Technology
Journal Volume
65
Journal Issue
11
Pages
8910-8924
Date Issued
2016-11
Author(s)
T.-W. Chiang
Abstract
Zheng and Tse were the first to discover the fundamental diversity-multiplexing tradeoff (DMT) that occurs in multiple-input multiple-output (MIMO) systems. Their research was limited to infinite signal-to-noise ratio (SNR) situations. Later, research was also conducted on finite-SNR situations; however, this research had significant problems with coarse approximation. In this paper, we propose more accurate approximations of the finite-SNR DMT and the outage probability for Rayleigh fading MIMO channels to solve these problems. The proposed formulas provide more general solutions that are applicable not only to uncorrelated and semicorrelated channels but also to fully correlated channels, which have not been considered in the literature. Utilizing the proposed finite-SNR DMT, we further investigate the influence of the deviation of the finite-SNR DMT on system performance. We also derived an accurate SNR offset quantity, which provides a link for transformation of finite-SNR DMT to actual outage probability. Finally, we present computer simulation results for illustration and comparison to confirm the validity of our research work.
Type
journal article