Paper Info
Title
Low Complexity Semi-Blind Maximum-Likelihood Multiuser Receiver For Mc-Cdma Systems
Abstract
In this paper, we present a novel joint multiuser detection method based on sphere packing lattice decoding and semi-blind channel estimation for multicarrier code-division multiple-access (MC-CDMA) systems. After modelling MC-CDMA as a sphere packing lattice, a low-complexity maximum-likelihood (ML) detection, sphere decoding algorithm, is applied to jointly detect all users. The impacts of channel estimation errors are studied by incorporating a semi-blind subspace based channel estimation in the receiver. The selection of search radius and the complexity of the receiver are also investigated. Another promising detection technique, genetic algorithm (GA) based multiuser detector (MUD) is also studied. Simulation results demonstrate the superior performance of the semi-blind receiver compared to the conventional receivers for MC-CDMA and its robustness to channel estimation errors.
Year
DOI
Venue
2004
10.1109/PIMRC.2004.1368852
2004 IEEE 15TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1-4, PROCEEDINGS
Keywords
Field
DocType
MC-CDMA, multiuser detector, sphere detection, GA based MUD, maximum-likelihood receiver
Subspace topology,Computer science,Algorithm,Multiuser detection,Communication channel,Robustness (computer science),Real-time computing,Decoding methods,Statistics,Code division multiple access,Detector,Computational complexity theory
Conference
Citations 
PageRank 
References 
0
0.34
6
Authors
3
Name
Order
Citations
PageRank
Zexian Li120814.90
Markku J. Juntti21065127.57
Latva-aho Matti31935189.95