On the Performance Analysis of Wireless Receiver in Cascaded Fading Channel

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jyoteesh malhotra
Ajay K. Sharma
R. S. Kaler

Abstract

In this paper, we provide a unified analysis for wireless system over cascaded fading channels modeled either by cascaded Nakagami-m or Weibull fading models. These cascade fading models are developed by the product of independent Nakagami-m or Weibull random variables, which are not necessary identically distributed. The performance measures such as amount of fading, average bit error rate, and signal outage are computed in this analysis. We first use the Padé approximation (PA) technique to find simple to evaluate rational expressions for the moment generating function (MGF) of output signal-to-noise ratio (SNR), unlike previously derived intricate expressions in terms of MeijerG function for cascaded Nakagami-m fading channel. Rational expressions for the MGF of the cascaded Weibull random variable are also computed to provide new set of performance results. Using these rational expressions, we analyze the performance of wireless receivers under a range of representative channel fading conditions using
both cascaded fading models. To verify the correctness of the proposed rational expression formulation numerical and computer simulations has been done, which shows perfect match.

Article Details

Section
Wireless and Mobile Communications
Author Biographies

jyoteesh malhotra

Lecturer, ECE department, Guru Nanak Dev University, Regional Campus, Jalandhar

Ajay K. Sharma

Professor & Head , Department of Computer Science & Engineering, National Institute Of Technology, Jalandhar

R. S. Kaler

Professor, Department of Electronics & Communication Engineering, Thapar University, Patiala