Title :
Blind RLS based space-time adaptive 2-D RAKE receivers for DS-CDMA communication systems
Author :
Chen, Yung-Fang ; Zoltowski, Michael D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA
fDate :
7/1/2000 12:00:00 AM
Abstract :
The goal of a blind two-dimensional (2-D) RAKE receiver for DS-CDMA is to cancel strong multiuser access interference (MUAI) while optimally combining the signal of interest´s (SOI) multipath. The weight vector yielding the optimum SINR for bit decisions may be computed as the “largest” generalized eigenvector of a matrix pencil composed of the SOI plus MUAI and MUAI alone space-time correlation matrices. An alternative blind 2-D RAKE receiver is presented based on RLS-type space-time adaptive filtering that offers competitive performance. The applicability of the scheme to the IS-95 uplink is addressed
Keywords :
adaptive filters; cellular radio; code division multiple access; eigenvalues and eigenfunctions; filtering theory; interference suppression; least squares approximations; matrix algebra; multipath channels; multiuser channels; radio links; radio receivers; radiofrequency interference; recursive filters; space-time adaptive processing; spread spectrum communication; DS-CDMA communication systems; IS-95 uplink; RLS-type space-time adaptive filtering; bit decisions; blind 2D RAKE receiver; blind RLS; cellular communications system; direct sequence code division multiple access; generalized eigenvector; matrix pencil; multiuser access interference cancellation; optimum SINR; performance; signal of interest multipath; space-time adaptive 2D RAKE receivers; space-time correlation matrices; weight vector; Antenna arrays; Fading; Fingers; Interference cancellation; Multiaccess communication; Multipath channels; Resonance light scattering; Signal processing algorithms; Signal to noise ratio; Two dimensional displays;
Journal_Title :
Signal Processing, IEEE Transactions on
