Name
Title | ||
|---|---|---|
Set-Membership Adaptive Algorithms Based on Time-Varying Error Bounds for CDMA Interference Suppression |
Abstract | ||
|---|---|---|
This paper presents set-membership (SM) adaptive algorithms based on time-varying error bounds for code-division multiple-access (CDMA) interference suppression. We introduce a modified family of SM adaptive algorithms for parameter estimation with time-varying error bounds. The considered algorithms include modified versions of the SM normalized least mean square (SM-NLMS), the affine projection (SM-AP), and the bounding ellipsoidal adaptive constrained (BEACON) recursive least-square technique. The important issue of error-bound specification is addressed in a new framework that takes into account parameter estimation dependency, multiaccess, and intersymbol interference (ISI) for direct-sequence CDMA (DS-CDMA) communications. An algorithm for tracking and estimating the interference power is proposed and analyzed. This algorithm is then incorporated into the proposed time-varying error bound mechanisms. Computer simulations show that the proposed algorithms are capable of outperforming previously reported techniques with a significantly lower number of parameter updates and a reduced risk of overbounding or underbounding. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1109/TVT.2008.926608 | Vehicular Technology, IEEE Transactions |
Keywords | Field | DocType |
code division multiple access,interference suppression,intersymbol interference,least mean squares methods,recursive estimation,spread spectrum communication,CDMA interference suppression,affine projection,bounding ellipsoidal adaptive constrained recursive least-square technique,code-division multiple-access,direct-sequence CDMA communications,intersymbol interference,normalized least mean square,parameter estimation,set-membership adaptive algorithms,time-varying error bounds,Adaptive filters,DS-CDMA,Set-membership filtering,adaptive filters,direct-sequence code-division multiple access (DS-CDMA),interference suppression,set-membership filtering (SMF) | Least mean squares filter,Intersymbol interference,Algorithm design,Computer science,Algorithm,Filter (signal processing),Electronic engineering,Adaptive filter,Estimation theory,Adaptive algorithm,Spread spectrum | Journal |
Volume | Issue | ISSN |
58 | 2 | 0018-9545 |
Citations | PageRank | References |
54 | 1.67 | 15 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| de Lamare, R.C. | 1 | 652 | 33.42 |
| Paulo Sergio Ramirez Diniz | 2 | 390 | 40.55 |