Composite IG/FTR Channel Performance in Wireless Communication Systems

TL;DR

This paper introduces a new composite wireless fading model combining FTR fading and IG shadowing, providing closed-form expressions for its statistical properties and analyzing its outage performance through simulations.

Contribution

It offers a novel analytical framework for the composite IG/FTR fading model, enabling closed-form expressions for its distribution and performance metrics.

Findings

Closed-form GMGF, PDF, and CDF for the composite model

Exact and asymptotic outage probability analysis

Validation through Monte Carlo simulations

Abstract

We present a composite wireless fading model encompassing multipath fading and shadowing based on fluctuating two-ray (FTR) fading and inverse gamma (IG) shadowing. We first determine an alternative framework for the statistical characterization and performance evaluation of the FTR fading model, which is based on the fact that the FTR fading distribution can be described as an underlying Rician Shadowed (RS) distribution with continuously varying parameter Kr (ratio of specular to diffuse components). We demonstrate that this new formulation permits to obtain a closed-form expression of the generalized moment generating function (GMGF) of the FTR model, from which the PDF and CDF of the composite IG/FTR model can be obtained in closed-form. The exact and asymptotic outage probability of the IG/FTR model are analyzed and verified by Monte Carlo simulations.