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|Tous|Domaines|Projets Spéciaux|Auteurs|Thèses et Mémoires| CQPSK perrformance over frequency-selective fading channels by the Gaussian approximation and the Fourier-Bessel methods The purpose of this paper is to compare the Gaussian approximation and the Fourier-Bessel series method for computing the CQPSK performance over frequency selective Rician fading channels described by a one-sided exponential delay profile. Using Gaussian approximation, we obtain the bit error rate (BER) in terms of a Fading Factor. With the Fourier-Bessel method, we derive an upper bound for the BER by assuming that all path strengths are identically Rayleigh distributed. Comparisons of the results obtained in the two cases permit to investigate when the Gaussian approximation approach is applicable and when the use of another method such as Fourier-Bessel series is required. The performance resultats based on Monte Carlo simulations show the tightness of the upper bound for the BER obtained with the Fourier-Bessel method. Assia Semmar juillet 2002, The 6th World Multiconfrence on Systemics, Cybernetics and Informatics, Orlando, , Bibtex: @Aucun{, author = {Assia Semmar}, title = {CQPSK perrformance over frequency-selective fading channels by the Gaussian approximation and the Fourier-Bessel methods}, journal = {The 6th World Multiconfrence on Systemics, Cybernetics and Informatics}, year = {2002}, month = {July}, language = {}, } Dernière modification le lundi 20 décembre 2004 à 12h57 par Assia Semmar