Capacity Analysis of the Fluctuating Double-Rayleigh with Line-of-Sight Fading Channel

TL;DR

This paper derives exact and approximate capacity expressions for a complex wireless fading channel model, providing insights into its performance with analytical and numerical validation.

Contribution

It introduces new closed-form and approximate capacity formulas for the fluctuating double-Rayleigh with line-of-sight fading channel, advancing analytical understanding of such channels.

Findings

Exact capacity expressions derived for arbitrary noninteger fading parameters.

Approximate capacity formulas for small and large Rician K-factor ratios.

Numerical simulations confirm the accuracy of the analytical results.

Abstract

The proposed research performs the capacity analysis of the wireless channel described by the fluctuating double-Rayleigh with the line-of-sight model. The closed-form analytical expressions for the conditional capacity (in the case of arbitrary noninteger fading parameter) and the ergodic capacity (in the case of the integer fading parameter) are derived in terms of the extended generalized bivariate Meijer G-function. The exact solutions are succeeded by the approximating expressions deduced for the cases of small and large ratios between the Rician K-factor and the fading parameter. The performed numeric simulation verifies the correctness of the derived results and analyzes the proposed capacity approximation quality performance.