Performance analysis of bandwidth efficient coherent modulation schemes with L-fold MRC and SC in na - Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Sy

This paper presents the average symbol error rates (SERs) of the 16-ary phase shift keying (16PSK), 16ary amplitude phase shift keying (16APSK) and 16ary quadrature amplitude modulation (16QAM) with L-fold maximal ratio combining (MRC) and selection combining (SC) space diversity receptions over Nakagami-m fading channels. Numerical results manifested error performance improvement when Lfold MRC and SC diversity receptions were employed. Error performance improvement attributed to an L=2 MRC diversity reception is comparable with that attributed to an L=4 SC diversity reception for the above three 16-ary modulation systems in a Nakagami-m fading channel with m of 5. pilot tone. Therefore, it is still of interest to evaluate the error performance of coherent modulation schemes for its superiority over the noncoherent or differentially-coherent modulations. The aim of this paper is thus to present some closed form expressions for the average SER of the three bandwidth efficient coherent modulation schemes (16PSK, 16APSK and 16QAM) with L-fold MRC and SC space diversity receptions over Nakagami-m fading channels. This paper is organized as follows. Section I1 will describe some backgrounds of the systems. The error performance analyses of 16PSK, 16APSK and 16QAM with L-fold MRC and SC over Nakagami-m fading channels are presented in Section I11 V, respectively. Section VI presents the numerical results, and finally, some concluding remarks are given in Section VII.