On multiuser detection in asynchronous CDMA flat Rayleigh fading channels

Author

Zvonar, Zoran ; Brady, David

Author_Institution

Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA

fYear

1992

Firstpage

123

Lastpage

127

Abstract

The performance analysis of low-complexity decorrelating detectors is presented for both coherent and differentially coherent transmission over the multiple-access, frequency-nonselective Rayleigh fading channel. While it is known that correlation-type receivers are near-far limited in the case when a single fading path dominates, it is shown that the multiuser detectors eliminate the bit error rate floor, alleviate the near-far problem, and rival optimum demodulation for isolated transmission. The results apply to wideband and narrowband CDMA systems

Keywords

code division multiple access; demodulation; fading; mobile radio systems; asynchronous CDMA flat Rayleigh fading channels; coherent transmission; demodulation; differentially coherent transmission; frequency-nonselective channels; low-complexity decorrelating detectors; mobile radio; multiple-access channels; multiuser detection; narrowband CDMA; wideband CDMA; Bit error rate; Decorrelation; Demodulation; Detectors; Fading; Frequency; Multiaccess communication; Multiuser detection; Performance analysis; Rayleigh channels;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 1992. Proceedings, PIMRC '92., Third IEEE International Symposium on

Conference_Location

Boston, MA

Print_ISBN

0-7803-0841-7

Type

conf

DOI

10.1109/PIMRC.1992.279951

Filename

279951