Paper Info
Title
Performance analysis of optimal channel estimation and multiuser detection in a randomly-spread CDMA channel.
Abstract
This paper analyzes performance of optimal channel estimation and multiuser detection (MUD) in a block-fading code-division multiple-access (CDMA) channel on the assumptions of random spreading and large-system limit, by using the replica method developed in statistical mechanics. The authors find that the asymptotic spectral efficiency of the linear minimum mean-squared error (LMMSE) MUD which was proposed and analyzed by Evans and Tse in 2000 is indistinguishable from that of the optimal MUD for small system loads. Our results imply that performance of MUD scarcely improves even if one spends more computational cost than that of the LMMSE MUD, i.e., at most the cube of the number of users, on the above-described conditions.
Year
DOI
Venue
2010
10.1007/s11424-010-9278-z
J. Systems Science & Complexity
Keywords
Field
DocType
replica method,code-division multiple-access (cdma) systems,spectral efficiency.,code-division multiple-access cdma systems,multiuser detection,spectral efficiency,channel estimation,telecommunications,signal processing,code division multiple access
Replica,Signal processing,Statistical mechanics,Computer science,Control theory,Multiuser detection,Communication channel,Spectral efficiency,Code division multiple access,Cube
Journal
Volume
Issue
ISSN
23
1
1559-7067
Citations 
PageRank 
References 
1
0.36
11
Authors
4
Name
Order
Citations
PageRank
Keigo Takeuchi19312.11
Mikko Vehkaperä210315.36
Toshiyuki Tanaka319019.98
R. Muller41206124.92