Name
Title | ||
|---|---|---|
Blind Adaptive and Iterative Algorithms for Decision-Feedback DS-CDMA Receivers in Frequency-Selective Channels |
Abstract | ||
|---|---|---|
In this paper, we examine blind adaptive and iterative decision-feedback (DF) receivers for direct-sequence code-division multiple-access systems in frequency-selective channels. Code-constrained minimum variance and constant modulus design criteria for DF receivers based on constrained optimization techniques are investigated for scenarios subject to multipath. Computationally efficient blind adaptive stochastic gradient and recursive least squares algorithms are developed for estimating the parameters of DF detectors along with successive, parallel, and iterative DF structures. A novel successive parallel arbitrated DF scheme is presented and combined with iterative techniques for use with cascaded DF stages in order to mitigate the deleterious effects of error propagation. Simulation results for an uplink scenario assess the algorithms and the blind adaptive DF detectors against linear receivers and evaluate the effects of error propagation of the new cancellation techniques against previously reported approaches |
Year | DOI | Venue |
|---|---|---|
2007 | 10.1109/TVT.2006.889561 | Vehicular Technology, IEEE Transactions |
Keywords | Field | DocType |
automatic repeat request,code division multiple access,gradient methods,least squares approximations,optimisation,recursive estimation,spread spectrum communication,stochastic processes,wireless channels,blind adaptive stochastic gradient algorithm,cancellation techniques,code-constrained minimum variance,constant modulus design criteria,constrained optimization technique,direct-sequence code-division multiple-access systems,error propagation,frequency-selective channels,iterative decision-feedback DS-CDMA receivers,linear receivers,recursive least squares algorithms,Blind adaptive algorithms,d irect-sequence-code-division multiple access (DS-CDMA) systems,decision feedback receivers,multiuser detection | Multipath propagation,Propagation of uncertainty,Iterative method,Control theory,Computer science,Multiuser detection,Algorithm,Electronic engineering,Adaptive algorithm,Estimation theory,Recursive least squares filter,Spread spectrum | Journal |
Volume | Issue | ISSN |
56 | 2 | 0018-9545 |
Citations | PageRank | References |
1 | 0.35 | 17 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Rodrigo C. de Lamare | 1 | 1461 | 179.59 |
| Raimundo Sampaio-Neto | 2 | 364 | 15.03 |
| de Lamare, R.C. | 3 | 652 | 33.42 |
| Sampaio-Neto, R. | 4 | 1 | 0.35 |