Title :
Exact symbol error rate and total degradation performance of nonlinear M-QAM fading channels [satellite mobile communication applications]
Author :
Cao, Yu ; Ibnkahla, Mohamed
Author_Institution :
Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, Ont., Canada
Abstract :
In this paper, we derive the exact symbol error rate (SER) and total degradation (TD) performances of coherent M-ary QAM constellations over nonlinear fading channels with maximum ratio combining (NMC) diversity. We analyze the combined effect of nonlinear distortion introduced by the high power amplifier (HPA) and multipath fading. Our results are used to optimize system parameters, such as ring ratios of circular QAM constellations and HPA-backoffs. Comparisons among five popular 16-ary constellations are also made for various nonlinear fading channels.
Keywords :
diversity reception; error statistics; fading channels; mobile satellite communication; multipath channels; nonlinear distortion; optimisation; power amplifiers; quadrature amplitude modulation; HPA-backoff optimization; MRC diversity; SER; circular QAM constellation ring ratios; coherent M-ary QAM constellations; high power amplifier nonlinear distortion; maximum ratio combining diversity; multipath fading; nonlinear M-QAM total degradation performance; nonlinear fading channels; satellite mobile communications; symbol error rate; system parameter optimization; Constellation diagram; Degradation; Diversity reception; Error analysis; Fading; Nonlinear distortion; Performance loss; Quadrature amplitude modulation; Satellites; Signal analysis;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on
Print_ISBN :
0-7803-8874-7
DOI :
10.1109/ICASSP.2005.1415877
