Paper Info
Title
Blind Adaptive Interference Suppression Based on Set-Membership Constrained Constant-Modulus Algorithms With Dynamic Bounds
Abstract
This work presents blind constrained constant modulus (CCM) adaptive algorithms based on the set-membership filtering (SMF) concept and incorporates dynamic bounds for interference suppression applications. We develop stochastic gradient and recursive least squares type algorithms based on the CCM design criterion in accordance with the specifications of the SMF concept. We also propose a blind framework that includes channel and amplitude estimators that take into account parameter estimation dependency, multiple access interference (MAI) and inter-symbol interference (ISI) to address the important issue of bound specification in multiuser communications. A convergence and tracking analysis of the proposed algorithms is carried out along with the development of analytical expressions to predict their performance. Simulations for a number of scenarios of interest with a DS-CDMA system show that the proposed algorithms outperform previously reported techniques with a smaller number of parameter updates and a reduced risk of overbounding or underbounding.
Year
DOI
Venue
2012
10.1109/TSP.2012.2229995
IEEE Transactions on Signal Processing
Keywords
Field
DocType
adaptive filters,amplitude estimation,channel estimation,code division multiple access,gradient methods,interference suppression,intersymbol interference,least squares approximations,parameter estimation,radiofrequency interference,recursive filters,spread spectrum communication,stochastic processes,CCM,DS-CDMA system,ISI,MAI,SMF concept,amplitude estimator,blind adaptive interference suppression,channel estimator,convergence analysis,dynamic bound,interference suppression,intersymbol interference,multiple access interference,multiuser communication,parameter estimation,recursive least square type algorithm,set-membership constrained constant-modulus adaptive algorithm,set-membership filtering concept,stochastic gradient algorithm,tracking analysis,Blind adaptive estimation,interference suppression,set-membership estimation,spread spectrum systems
Intersymbol interference,Mathematical optimization,Control theory,Algorithm,Filter (signal processing),Interference (wave propagation),Adaptive filter,Estimation theory,Mathematics,Recursive least squares filter,Estimator,Spread spectrum
Journal
Volume
Issue
ISSN
61
5
1053-587X
Citations 
PageRank 
References 
13
0.52
27
Authors
2
Name
Order
Citations
PageRank
Rodrigo C. de Lamare11461179.59
Paulo S. R. Diniz224738.72