Title :
Mitigation of nonlinear distortion in DS/CDMA systems
Author :
Mei, Gang ; Geraniotis, Evaggelos
Author_Institution :
Dept. of Electr. Eng. & Syst. Res. Center, Maryland Univ., College Park, MD, USA
Abstract :
Nonlinear amplifiers, present in both the base stations of cellular networks and transponders of satellite communications systems, are known to be one of the most undesired hardware distortions in the future DS/CDMA PCS systems. To mitigate the effects of nonlinearities, this paper proposes a design which modifies the input value of the correlator by employing a discriminator. We derive the optimal function of the discriminator. By computer simulation, we know we can improve the performance using the discriminator
Keywords :
AWGN; cellular radio; code division multiple access; discriminators; multiuser channels; nonlinear distortion; personal communication networks; radiofrequency amplifiers; satellite communication; spread spectrum communication; transponders; AWGN; DS/CDMA systems; PCS systems; base stations; cellular networks; computer simulation; correlator input value modification; discriminator; hardware distortions; nonlinear amplifiers; nonlinear distortion mitigation; optimal function; satellite communications systems; systems performance; transmitter; transponders; Base stations; Computer simulation; Correlators; Hardware; Land mobile radio cellular systems; Multiaccess communication; Nonlinear distortion; Personal communication networks; Satellite communication; Transponders;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-6463-5
DOI :
10.1109/PIMRC.2000.881431
