DocumentCode :
3342700
Title :
Performance analysis of non-linearly amplified M-QAM signals in MIMO channels
Author :
Sulyman, Ahmed Iyanda ; Ibnkahla, Mohamed
Author_Institution :
Dept. of Electr. & Comput. Eng., Queen´´s Univ., Canada
Volume :
4
fYear :
2004
fDate :
17-21 May 2004
Abstract :
MIMO systems using multiple transmit and receive antennas on both ends of a linear wireless communications link are by now well studied. Several axes of these schemes have been explored with the underlying MIMO channel assumed linear. In this work, we investigate the effect of non-linearity in the MIMO channel. New results on symbol error rate performances of several M-QAM constellations in linear and non-linear MIMO channels are presented. The results show that for any MIMO configuration, performance degradation due to non-linearity reduces as the fading gets more severe, and for a particular fading channel, the degradation increases as the MIMO dimension is increased. Optimum ring-ratios for circular QAM constellations in MIMO channels are also reported, and compared with existing results where applicable.
Keywords :
MIMO systems; fading channels; nonlinear network analysis; quadrature amplitude modulation; radio links; M-QAM constellations; MIMO channel nonlinearity; circular QAM constellations; fading channels; linear wireless communications link; multiple transmit/receive antennas; nonlinear amplifiers; nonlinearly amplified M-QAM signals; ring ratio optimization; symbol error rate; Degradation; Error analysis; Fading; MIMO; Nonlinear distortion; Performance analysis; Quadrature amplitude modulation; Receiving antennas; Satellites; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on
ISSN :
1520-6149
Print_ISBN :
0-7803-8484-9
Type :
conf
DOI :
10.1109/ICASSP.2004.1326848
Filename :
1326848
Link To Document :
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