Blind multiuser detector for DS/CDMA channels based on the modified stochastic gradient descent algorithm

Author

Mukherjee, A. ; Teh, E.C. ; Gunawan, E.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore

Volume

5

fYear

2001

fDate

2001

Firstpage

1431

Abstract

The convergence rate of an adaptive filter is one of the key elements which determines the performance of the filter in a moderately slow time-varying channel. In this paper a new blind minimum mean-square error (MMSE) linear detector based on the modified stochastic gradient descent (SGD) algorithm is presented. The proposed detector is simple, robust and has a faster convergence rate than the conventional SGD algorithm

Keywords

adaptive filters; adaptive signal detection; code division multiple access; convergence; filtering theory; gradient methods; land mobile radio; least mean squares methods; multiuser channels; signal detection; spread spectrum communication; stochastic processes; time-varying channels; DS/CDMA channels; adaptive filter; blind MMSE linear detector; blind multiuser detector; convergence rate; filter performance; minimum mean-square error; mobile receivers; modified stochastic gradient descent algorithm; slow time-varying channel; Adaptive filters; Detectors; Mobile computing; Multiaccess communication; Multiuser detection; Robustness; Stochastic processes; Time-varying channels; Timing; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2001. ICC 2001. IEEE International Conference on

Conference_Location

Helsinki

Print_ISBN

0-7803-7097-1

Type

conf

DOI

10.1109/ICC.2001.937157

Filename

937157