Performance Analysis of Diversity Combining Multichannel Receivers in Generic-Gamma Fading Channels

Jyoteesh  Malhotra

doi:10.6180/jase.2011.14.4.06

Performance Analysis of Diversity Combining Multichannel Receivers in Generic-Gamma Fading Channels

Computer Science and Information Engineering

Jyoteesh Malhotra This email address is being protected from spambots. You need JavaScript enabled to view it.¹

¹Department of Electronics and Communication Engineering, G.N.D.U. Regional Campus, Jalandhar, India

Received: August 25, 2010
Accepted: January 18, 2011
Publication Date: December 1, 2011

Download Citation: ||https://doi.org/10.6180/jase.2011.14.4.06

ABSTRACT

In this paper, performance analysis of Optimum and Sub-optimum diversity combining receivers over generalized fading channels modeled by the three parameter Generic-Gamma model is presented. The Generic-Gamma model is versatile enough to represent short term fading such as Weibull, Nakagami-m or Rayleigh as well as shadowing. The performance measures such as amount of fading, average bit error rate, and signal outage are considered for analysis. With the aid of Moment Generating Function (MGF) approach and Padé approximation (PA) technique outage probability and Average bit error rate have been evaluated for a variety of modulation formats. PA technique has been used to derive simple-to-evaluate compact rational expressions for the MGF of output SNR. Using these novel rational expressions, the performance of multichannel receivers employing diversity combining under a range of representative channel fading conditions have been evaluated. The results have been validated through simulations which shows perfect match.

Keywords: Multipath Fading, Maximal Ratio Combining, Selection Combining, Outage Probability, Average Bit Error Rate, Moment Generating Function

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