Title :
Performance evaluation of the decorrelating detector for DS-CDMA systems over multipath Rayleigh fading channels with AWGN
Author :
Voorman, Alwyn J. ; Koulakiotis, Dimitris ; Aghvami, A. Hamid ; Prasad, Ramjee
Author_Institution :
IRCTR, Delft Univ. of Technol., Netherlands
Abstract :
This study assesses the performance of the decorrelating detector for DS-CDMA systems over multipath Rayleigh fading channels with AWGN. The decorrelating detector applies the inverse of the correlation matrix to decorrelate the matched filter outputs. The drawback of the decorrelating detector is that it enhances noise and that the inverse of the correlation matrix not always exists. The theoretical performance of the decorrelating detector is presented and the problem of inversion of the correlation matrix is discussed. This article also considers the case when the inverse of a smaller correlation matrix can be used for decorrelating the received data. The performance of the decorrelating detector is compared with other multi-user detectors proposed for DS-CDMA
Keywords :
AWGN; Rayleigh channels; code division multiple access; correlation methods; decorrelation; filtering theory; land mobile radio; matched filters; matrix inversion; multipath channels; multiuser channels; radio links; signal detection; spread spectrum communication; AWGN; DS-CDMA systems; correlation matrix inversion; decorrelating detector; inverse correlation matrix; matched filter outputs; mobile radio system; multi-user detectors; multipath Rayleigh fading channels; performance evaluation; received data decorrelation; uplink; AWGN; Additive white noise; Decorrelation; Detectors; Fading; Hybrid integrated circuits; Matched filters; Multiaccess communication; Multiple access interference; Silicon carbide;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1998. The Ninth IEEE International Symposium on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-4872-9
DOI :
10.1109/PIMRC.1998.733549
