Title :
Effects of high-power amplification on linear multiuser detectors performance in DS-CDMA frequency-selective fading channels
Author :
Rugini, L. ; Banelli, P. ; Cacopardi, S.
Author_Institution :
Perugia Univ., Italy
Abstract :
The aim of this paper is to examine the effects of the nonlinear distortions introduced by high-power amplifiers (HPAs) in the downlink of direct-sequence code-division multiple-access (DS-CDMA) systems. By modelling the nonlinear distortion noise as coloured Gaussian noise, a semi-analytical expression for the symbol-error rate (SER) of linear multiuser detectors (LMDs) in frequency-selective fading channels has been derived. Simulation results confirm the effectiveness of the theoretical approach.
Keywords :
Gaussian noise; cellular radio; code division multiple access; fading channels; mobile satellite communication; multiuser detection; nonlinear distortion; power amplifiers; radio links; radiofrequency amplifiers; spread spectrum communication; DS-CDMA frequency-selective fading channels; cellular mobile communication systems; coloured Gaussian noise; direct-sequence code-division multiple-access systems; downlink; frequency-selective fading channels; high-power amplification; high-power amplifiers; linear multiuser detectors; linear multiuser detectors performance; nonlinear distortion noise; nonlinear distortions; satellite mobile communication systems; simulation results; symbol-error rate; Base stations; Baseband; Degradation; Detectors; Downlink; Frequency; Frequency-selective fading channels; Gaussian noise; Multiaccess communication; Nonlinear distortion;
Conference_Titel :
Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE
Print_ISBN :
0-7803-7632-3
DOI :
10.1109/GLOCOM.2002.1188358
