Abstract
An approximation of the symbol error probability (SEP) of the cross QAM (XQAM) signal in a single-input multiple-output system over dual correlated Rayleigh, Nakagami-m, Nakagami-n (Rice) and Nakagami-q (Hoyt) fading channels is derived. The maximal-ratio combining is considered as the diversity technique, and the average SEP is obtained by using the moment generating function (MGF). Arbitrarily tight approximations for the Gaussian Q-function and the generalized Gaussian Q-function are obtained from the numerical analysis technique; the trapezoidal rule. The resulting expressions consist of a finite sum of MGF's which are easily evaluated and accurate enough. In addition, a transformation technique is used to derive independent channels from the correlated channels which are then used in the analysis. The simulation results show excellent agreement with the derived approximation expressions.
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