Name
Title | ||
|---|---|---|
Blind Linear Interference Suppression Based on Reduced-Rank Least-Squares Constrained Constant Modulus Design for DS-CDMA Systems |
Abstract | ||
|---|---|---|
In this paper we present a blind interference suppression technique for DS-CDMA systems based on a reduced-rank decomposition of a code-constrained constant modulus design criterion. We describe a least-squares (LS) type design criterion for blind linear detectors using the constrained optimization of the constant modulus cost function subject to code constraints. Based on this design approach and using the Lanczos algorithm, a multistage decomposition in the Krylov subspace is devised for blind reduced-rank parameter estimation. A computationally efficient blind reduced-rank LS type algorithm is also developed and compared with existing methods. Numerical results show that the proposed full-rank and reduced-rank techniques outperform existing methods for the linear suppression of multi-access and intersymbol interference in DS-CDMA systems. |
Year | DOI | Venue |
|---|---|---|
2007 | 10.1109/ICASSP.2007.366768 | Acoustics, Speech and Signal Processing, 2007. ICASSP 2007. IEEE International Conference |
Keywords | Field | DocType |
code division multiple access,interference suppression,intersymbol interference,least squares approximations,spread spectrum communication,DS-CDMA systems,Krylov subspace,Lanczos algorithm,blind linear interference suppression,blind reduced-rank parameter estimation,code-constrained constant modulus design criterion,intersymbol interference reduction,least-squares type design criterion,linear suppression,multistage decomposition,reduced-rank least-squares constrained constant modulus,CDMA,Least squares methods,blind methods,interference suppression | Krylov subspace,Least squares,Intersymbol interference,Mathematical optimization,Computer science,Lanczos algorithm,Interference (wave propagation),Estimation theory,Spread spectrum,Constrained optimization | Conference |
Volume | ISSN | ISBN |
3 | 1520-6149 | 1-4244-0727-3 |
Citations | PageRank | References |
0 | 0.34 | 0 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Rodrigo C. de Lamare | 1 | 1461 | 179.59 |
| Martin Haardt | 2 | 3531 | 311.32 |
| Raimundo Sampaio Neto | 3 | 155 | 25.30 |
| de Lamare, R.C. | 4 | 652 | 33.42 |
| Sampaio-Neto, R. | 5 | 0 | 0.34 |