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This work is devoted to the analysis of a regenerative multi-node dual-hopcooperative system over enriched multipath fading channels. Novel analyticexpressions are derived for the symbol-error-rate for $M{-}$ary quadraturemodulated signals in decode-and-forward relay systems over both independent andidentically distributed as well as independent and non-identically distributedNakagami${-}$q (Hoyt) fading channels. The derived expressions are based on themoment-generating-function approach and are given in closed-form in terms ofthe generalized Lauricella series. The offered results are validatedextensively through comparisons with respective results from computersimulations and are useful in the analytic performance evaluation ofregenerative cooperative relay communication systems. To this end, it is shownthat the performance of the cooperative system is, as expected, affected by thenumber of employed relays as well as by the value of the fading parameter $q$,which accounts for \textit{pre-Rayleigh} fading conditions that are oftenencountered in mobile cellular radio systems.

Analytic performance evaluation of M-QAM based decode-and-forward relay networks over enriched multipath fading channels