Affiliation:
1. 10F-2, No. 42, Lane 576, Sec. 1, Guangfu Road, Hsinchu 300, Taiwan
Abstract
Multiple-Input Multiple-Output (MIMO) systems have been endorsed to enable future
wireless communication requirements. The efficient system designing appeals an appropriate
channel model that considers all the dominating effects of the wireless environment. Therefore,
some complex or less analytically acquiescent composite channel models have been proposed typically
for Single-Input Single-Output (SISO) systems. These models are explicitly employed for
mobile applications, though, we need a specific study of a model for the MIMO system which can
deal with radar clutters and different indoor/outdoor and mobile communication environments.
Subsequently, the performance enhancement of the MIMO system is also required in such a scenario.
The system performance enhancement can be examined by low error rate and high capacity
using spatial diversity and spatial multiplexing respectively. Furthermore, for a more feasible and
practical system modeling, we require a generalized noise model along with a composite channel
model. Thus, all the patents related to MIMO channel models are revised to achieve the nearoptimal
system performance in a real-world scenario. This review paper offers the methods to improve
MIMO system performance in less and severe fading as well as shadowing environment and
focused on a composite Weibull-gamma fading model. The development is the collective effects of
selecting the appropriate channel models, spatial multiplexing/detection, and spatial diversity techniques
both at the transmitter and the receivers in the presence of arbitrary noise.
Publisher
Bentham Science Publishers Ltd.