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Error Analysis of 2-tierM-ary Star QAM Modulation in Shadowed Fading Channels

by Sourjya Dutta, Iti Saha Misra
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 88 - Number 1
Year of Publication: 2014
Authors: Sourjya Dutta, Iti Saha Misra
10.5120/15314-3629

Sourjya Dutta, Iti Saha Misra . Error Analysis of 2-tierM-ary Star QAM Modulation in Shadowed Fading Channels. International Journal of Computer Applications. 88, 1 ( February 2014), 9-16. DOI=10.5120/15314-3629

@article{ 10.5120/15314-3629,
author = { Sourjya Dutta, Iti Saha Misra },
title = { Error Analysis of 2-tierM-ary Star QAM Modulation in Shadowed Fading Channels },
journal = { International Journal of Computer Applications },
issue_date = { February 2014 },
volume = { 88 },
number = { 1 },
month = { February },
year = { 2014 },
issn = { 0975-8887 },
pages = { 9-16 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume88/number1/15314-3629/ },
doi = { 10.5120/15314-3629 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T22:06:28.639956+05:30
%A Sourjya Dutta
%A Iti Saha Misra
%T Error Analysis of 2-tierM-ary Star QAM Modulation in Shadowed Fading Channels
%J International Journal of Computer Applications
%@ 0975-8887
%V 88
%N 1
%P 9-16
%D 2014
%I Foundation of Computer Science (FCS), NY, USA
Abstract

The error performance of the 2-tier star shaped Quadrature Amplitude Modulation scheme over K and KG fading channels are analyzed and evaluated. Novel closed form expressions for Symbol Error Rate (SER) have been derived for M-ary 2-tier circular Star QAM transmitted over the K and KG fading channels. The expressions derived are in the form of sum of single definite integrals of hypergeometric functions which are calculated using numerical methods. The expressions are validated by extensive Monte Carlo simulation. A simple relationship between SER and bit error rate (BER) is proposed and experimentally verified. Using the expressions for SER, the optimum values of ring ratio are calculated for various values of M. It has also been established that the error performance of 2-tier Star QAM is considerably superior to that of the M-ary Square QAM for high and moderate fading.

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Index Terms

Computer Science
Information Sciences

Keywords

Star Quadrature Amplitude Modulation (QAM) Rayleigh-Gamma(K) Nakagami-Gamma(KG) Fading Shadowing Symbol Error Rate(SER) Bit Error Rate(BER)

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