Performance Analysis of MRC Diversity for Arbitrary Rectangular QAM Signals over Nakagami Fading Channels

Kwangmin HYUN  Dongweon YOON  Sang Kyu PARK  

IEICE TRANSACTIONS on Communications   Vol.E87-B   No.5   pp.1297-1305
Publication Date: 2004/05/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technology
QAM,  BER,  MRC,  diversity,  fading,  wireless communications,  

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General closed-form expressions are derived and analyzed for the exact bit error rate (BER) performance of the arbitrary rectangular Gray coded QAM signal in conjunction with maximal-ratio combining (MRC) diversity on frequency non-selective slow m-distributed Nakagami fading channel. The analyses consider four channel models, independent and identical, independent and nonidentical, identical but correlated, and arbitrary correlated fading. Numerical results demonstrate error performance improvement with the use of MRC diversity reception. The new expressions presented here are suitable for evaluating various cases of practical interest on wireless communication channels.