DocumentCode :
1986318
Title :
BER for M-QAM with Space Diversity and MRC in Rician Fading Channels
Author :
Ali, Adel Ahmed ; Alkhudairi, Khalid
Author_Institution :
King Saud Univ., Riyadh
fYear :
2006
fDate :
17-20 Sept. 2006
Firstpage :
67
Lastpage :
72
Abstract :
This paper presents simple bit error rate results for M-ary quadrature amplitude modulation (M-QAM) transmitted over slow, flat, identically independently distributed (i.i.d) Rician fading channels and using space diversity to enhance coverage and capacity. A single exponential function is used to approximate the bit error rates (BER) for M-QAM modulation over a Gaussian channel. This approximation is bounded within 1 dB for the signal alphabet M ges 4 and 0 les SNR les 30 dB. BER for optimum, maximal-ratio-combining (MRC) receive diversity, with channel side information known at the receiver (CSIR) is then obtained. Recently exact analysis of symbol error rate (SER) has been presented in the literature for M-ary differentially encoded/ differentially decoded phase shift keying (MDPSK) and coherent M-ary phase shift keying (MPSK), and for M-QAM transmitted over Rician fading channel using N branch receive MRC diversity. The results are presented either in an integral form or in the form of hyper-geometric infinite series. Unfortunately its use leads to numerical un-stability. Our analysis has followed the same track and the simplicity of the SER expressions used has resulted in simple closed form expression of the SER of N order diversity at Rician fading channel. Our expressions contain only exponential functions.
Keywords :
Gaussian channels; Rician channels; differential phase shift keying; diversity reception; error statistics; quadrature amplitude modulation; BER; Gaussian channel; M-QAM; M-ary differentially decoded phase shift keying; M-ary differentially encoded phase shift keying; M-ary phase shift keying; M-ary quadrature amplitude modulation; MPSK; MRC; Rician fading channels; SER; bit error rate; channel side information; exponential function; hyper-geometric infinite series; maximal-ratio-combining receive diversity; signal alphabet; space diversity; symbol error rate; Bit error rate; Diversity reception; Error analysis; Fading; Phase shift keying; Quadrature amplitude modulation; Rayleigh channels; Rician channels; Signal to noise ratio; Wireless communication; M-ary quadrature amplitude modulation (M-QAM); Rician fading channels; bit error probability; maximal ratio combining; space diversity;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Mobile Computing and Wireless Communication International Conference, 2006. MCWC 2006. Proceedings of the First
Conference_Location :
Amman
Print_ISBN :
978-9957-486-00-6
Type :
conf
DOI :
10.1109/MCWC.2006.4375198
Filename :
4375198
Link To Document :
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