Display probability of symbol errors for MQAM on Rician fading channel based on MGF method

Authors

  • Predrag Jovanovic Institute for Telecommunications and Electronics, IRITEL A.D. Belgrade
  • Dragan Mitic Institute for Telecommunications and Electronics, IRITEL A.D. Belgrade
  • Aleksandar Lebl Institute for Telecommunications and Electronics, IRITEL A.D. Belgrade
  • Radoslav Rajkovic Faculty of Mechanical Engineering, Innovation center, Belgrade

DOI:

https://doi.org/10.2298/YJOR130128036J

Keywords:

MQAM (M-ary Quadrature Amplitude Modulation), MRC (Maximal RatioCombining), MGF (Moment Generating Function), SEP (Symbol Error Probability)

Abstract

In this paper, we present a method to calculate the probability of error per symbol (Symbol Error Probability, SEP) of M-ary Quadrature Amplitude Modulation (MQAM) over a slow, flat, identically independently distributed Rician fading channels. Since the fading is one of the major constraints in wireless communications, then diversity modulation technique is used for the efficient transfer of message signals. Exact analysis of error probability per symbol for MQAM, transmitted over Rician fading channels, is performed by N branches of diversity reception using maximum ratio of signal-to-noise power (maximal-ratio-combining, MRC), where the information in the channel on the receiver side is known. The performances of MQAM over Rician fading channels are here also analyzed. Approximate formula is used to represent SEP for MQAM transmitted over Gaussian channels. Boundary condition for the approximation is M≥4 and 0≤SNR≤30 dB.

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Published

2015-02-01

Issue

Vol. 25 No. 1 (2015)

Section

Research Articles

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Copyright (c) 2015 YUJOR

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