Code-constrained blind detection of CDMA signals in multipath channels
- 1 December 2002
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Signal Processing Letters
- Vol. 9 (12) , 389-392
- https://doi.org/10.1109/LSP.2002.806043
Abstract
In this letter, a constant-modulus-algorithm-based multiuser detection scheme is proposed for a communication system under multipath propagation. To mitigate channel distortion and multiuser interference, we integrate multiple constraints into the optimization criterion. According to our analysis, the ability of the detector to remove all interference is ensured in the absence of noise when the constraints are properly preselected. However, in the presence of noise, the constraints highly affect the performance of the receiver. In order to optimally combine signals from different paths to achieve performance gains, those constraints can also be treated as variables and jointly optimized with the receiver, as verified by numerical examples.Keywords
This publication has 11 references indexed in Scilit:
- Blind CDMA detection and equalization using linearly constrained CMAPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- A modified constrained constant modulus approach to blind adaptive multiuser detectionIEEE Transactions on Communications, 2001
- Blind estimation and equalization of MIMO channels via multidelay whiteningIEEE Journal on Selected Areas in Communications, 2001
- Blind adaptive algorithms for minimum variance CDMA receiversIEEE Transactions on Communications, 2001
- Comments on "A linearly constrained constant modulus approach to blind adaptive multiuser interference suppression"IEEE Communications Letters, 2000
- On blind multiuser forward link channel estimation by the subspace method: identifiability resultsIEEE Transactions on Signal Processing, 2000
- Geometrical characterizations of constant modulus receiversIEEE Transactions on Signal Processing, 1999
- A linearly constrained constant modulus approach to blind adaptive multiuser interference suppressionIEEE Communications Letters, 1998
- Blind equalization and multiuser detection in dispersive CDMA channelsIEEE Transactions on Communications, 1998
- Self-Recovering Equalization and Carrier Tracking in Two-Dimensional Data Communication SystemsIEEE Transactions on Communications, 1980