Title: Capacity of dual-branch MRC system over correlated Nakagami-m fading channels with non-identical fading parameters and imbalanced average SNRs

Authors: Pukhrambam Bijaya Devi; Amujao Yengkhom; Mohammad Irfanul Hasan; Gitanjali Chandwani

Addresses: Department of Electronics and Communication Engineering, Graphic Era University, 566/6 Bell Road, Clement Town, Dehradun 248002, Uttarakhand, India ' Department of Electronics and Communication Engineering, Graphic Era University, 566/6 Bell Road, Clement Town, Dehradun 248002, Uttarakhand, India ' Department of Electronics and Communication Engineering, Graphic Era University, 566/6 Bell Road, Clement Town, Dehradun 248002, Uttarakhand, India ' Department of Electronics and Communication Engineering, Graphic Era University, 566/6 Bell Road, Clement Town, Dehradun 248002, Uttarakhand, India

Abstract: We present the closed-form expressions for the capacity with correlated, non-identical fading parameters and imbalanced average SNRs (Signal-to-Noise Ratios) of dual-branch MRC (Maximal Ratio Combining) diversity system over Nakagami-m fading channels. This capacity is evaluated for ORA (Optimum Rate Adaptation with constant transmit power) and CIFR (Channel Inversion with Fixed Rate) schemes. Numerical results have been presented and compared with the available capacity results of ORA and CIFR schemes in the literature. The effect of different practical constraints, e.g. non-identical fading parameters, fade correlation and level of imbalanced in average SNRs on the channel capacity of the systems, is analysed.

Keywords: channel capacity; channel inversion with fixed rate; dual-branch; imbalanced; maximal ratio combining; optimum rate adaptation with constant transmit power.

DOI: 10.1504/IJWMC.2017.088085

International Journal of Wireless and Mobile Computing, 2017 Vol.13 No.2, pp.151 - 163

Received: 31 Aug 2016
Accepted: 07 May 2017
Published online: 21 Nov 2017 *

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