Block CMA-based blind and group-blind multiuser detectors

We derive a new iterative multiuser detection algorithm based on a generalized sidelobe canceller which uses the constant modulus property of digitally modulated signals together with code knowledge given to a receiver in a CDMA system. The proposed algorithm can be seen as an extension of the least...

Full description

Saved in:
Bibliographic Details
Main Authors: Bahng, S., Host-Madsen, A.
Format: Conference Proceeding
Language:English
Subjects:
Applied sciences
Array signal processing
Cost function
Detection, estimation, filtering, equalization, prediction
Detectors
Digital modulation
Exact sciences and technology
Information, signal and communications theory
Interference
Iterative algorithms
Least squares methods
Multiaccess communication
Multiuser detection
Signal and communications theory
Signal processing algorithms
Signal, noise
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We derive a new iterative multiuser detection algorithm based on a generalized sidelobe canceller which uses the constant modulus property of digitally modulated signals together with code knowledge given to a receiver in a CDMA system. The proposed algorithm can be seen as an extension of the least squares constant modulus algorithm in a sense that it simultaneously minimizes the constant modulus (CM) and the least square (LS) cost functions iteratively. The proposed detector performs as well as the ideal MMSE detector in the high SNR region, in addition to resolving the interference capture problem existing in most constant modulus algorithms (CMA).
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.2004.1326973