Performance Improvement in Spatially Multiplexed MIMO Systems over Weibull-Gamma Fading Channel

Abstract

In multiple-input multiple-output (MIMO) systems, spatial demultiplexing at the receiver has its own significance. Thus, several detection techniques have been investigated. There is a tradeoff between computational complexity and optimal performance in most of the detection techniques. One of the detection techniques which gives improved performance and acceptable level of complexity is ordered successive interference cancellation (OSIC) with minimum mean square error (MMSE). However, optimal performance can be achieved by maximum likelihood (ML) detection but at a higher complexity level. Therefore, MMSE-OSIC with candidates (OSIC

On the Capacity of MIMO Weibull-Gamma Fading Channels in Low SNR Regime

“…Substituting (14)- (15) into (20), we get (17) and (18) using simple mathematical formulation. Equation 17is the increasing function of and the decreasing function of .…”

“…In [16], author has proposed a composite Weibull-gamma (WG) distribution for modeling multipath along with shadowing. In the recent work [17][18][19][20][21], WG fading channel is used to analyze the MIMO system performance due to its less computational complexity.…”

“…Consequently, under such fading channel conditions, the ergodic capacity has been evaluated in [19] and the error rate performance of MIMO systems has been evaluated using efficient detection technique in [20].…”