Performance Analysis of Cross QAM with MRC Over Dual Correlated Nakagami-m, -n, and -q Channels
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 MGFs 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.
performance analysis cross qam correlated nakagami