Performance of quadrature amplitude modulation with nonlinear transmit amplifiers in Rayleigh fading

Author

Chrisikos, George ; Win, Moe Z.

fYear

2000

fDate

2000

Firstpage

51

Lastpage

54

Abstract

A method is presented to compensate for the performance degradation of a 16-QAM modulation scheme due to nonlinear distortion which does not resort to complicated processing and equalization. The symbol error probability performance of the proposed receiver is derived analytically and compared with the uncompensated demodulation technique. We consider a compensated diversity receiver for independent Rayleigh fading channels, where the average signal-to-noise ratios of the diversity branches are not necessarily equal. It is shown that the compensated technique is a viable approach for such non-constant envelope higher order modulation schemes

Keywords

Rayleigh channels; demodulation; diversity reception; error statistics; nonlinear distortion; power amplifiers; quadrature amplitude modulation; radio transmitters; radiofrequency amplifiers; 16-QAM; SNR; average signal-to-noise ratio; compensated diversity receiver; diversity branches; independent Rayleigh fading channels; nonconstant envelope higher order modulation; nonlinear distortion; nonlinear transmit amplifiers; performance degradation compensation; power amplifiers; quadrature amplitude modulation; symbol error probability; uncompensated demodulation; wireless communication systems; Amplitude modulation; Diversity reception; Fading; Nonlinear distortion; Phase distortion; Power amplifiers; Power system modeling; Quadrature amplitude modulation; Rayleigh channels; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio and Wireless Conference, 2000. RAWCON 2000. 2000 IEEE

Conference_Location

Denver, CO

Print_ISBN

0-7803-6267-5

Type

conf

DOI

10.1109/RAWCON.2000.881852

Filename

881852