Paper Info
Title
An application of the expectation-maximization algorithm to interference rejection for direct-sequence spread-spectrum signals.
Abstract
For a direct-sequence spread-spectrum (DS-SS) system we pose and solve the problem of maximum-likelihood (ML) sequence estimation in the presence of narrowband interference, using the expectation-maximization (EM) algorithm. It is seen that the iterative EM algorithm obtains at each iteration an estimate of the interference which is then subtracted from the data before a new sequence estimate is produced. Both uncoded and trellis coded systems are studied, and the EM-based algorithm is seen to perform well, outperforming a receiver that uses an optimized notch filter to remove the intereference, especially for large interference levels.
Year
Venue
Field
1999
KYBERNETIKA
Band-stop filter,Mathematical optimization,Expectation–maximization algorithm,Interference (wave propagation),Narrowband interference,Direct-sequence spread spectrum,Mathematics
DocType
Volume
Issue
Journal
35
1
ISSN
Citations 
PageRank 
0023-5954
0
0.34
References 
Authors
3
2
Name
Order
Citations
PageRank
Quan G. Zhang100.34
Costas N. Georghiades230132.18