A simple and accurate analysis of digital communication systems with diversity reception in different fading environments

TitleA simple and accurate analysis of digital communication systems with diversity reception in different fading environments
Publication TypeConference Paper
Year of Publication1998
AuthorsAnnamalai, A., C. Tellambura, and V. K. Bhargava
Conference NamePersonal, Indoor and Mobile Radio Communications, 1998. The 9th IEEE International Symposium on
Pagination1055 -1060 vol.3
Date Publishedsep.
Keywordsapproximation, average symbol error probability, cellular radio, Chebyshev approximation, closed-form expressions, coherent communication system, complementary error function, computationally stable method, differentially coherent communication system, digital communication systems, digital radio, diversity combining, diversity reception, diversity techniques, error analysis, error statistics, exponential, fading channels, fading environments, fading parameters, Gauss-Chebychev quadrature rules, mean signal strengths, microdiversity reception, moment generating function, MRC, noncoherent communication system, numerical analysis, numerical stability, predetection maximal-ratio combining, satellite communication, satellite communication systems

This paper surveys some of the diversity techniques commonly used in cellular radio and satellite communication systems to mitigate the detrimental effects of signal fading. Subsequently, an analytical technique well suited to numerical analysis is presented for computing the average symbol error probability (SER) of a wide class of coherent, differentially coherent and noncoherent communication systems with microdiversity reception under a myriad of fading scenarios. We restrict our analysis to a predetection maximal-ratio combining (MRC) scheme, although this method applies to other diversity combining techniques as well. Our novel derivation relies upon the properties of the moment generating function (MGF) of the fading channels, the use of an alternative exponential form of the complementary error function, and the application of Gauss-Chebychev quadrature (GCQ) rules. The closed-form expressions obtained are sufficiently general to allow for arbitrary fading parameters as well as dissimilar mean signal strengths across the diversity branches. Moreover, this method is computationally stable and approximates the true value of average SER within any degree of accuracy


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