Pilot-Aided Acquisition Algorithms for Asynchronous DS-CDMA Systems
Xiao, P and Strom, E (2003) Pilot-Aided Acquisition Algorithms for Asynchronous DS-CDMA Systems European Transactions on Telecommunications, 14 (1). pp. 89-96.
The problem of estimating propagation delays of orthogonally modulated signals in asynchronous DS-CDMA systems over time-varing Rayleigh-fading channels is treated in this paper. The maximum likelihood (ML) estimator and its unaffordable complexity for implementation are discussed. Some suboptimal solutions, e.g., whitened sliding correlator, MMSE estimator, subspace-based estimator, approximate ML estimator, are proposed to combat the multiple access interference in the fading channels. The performance of these estimators are evaluated with the computer simulations and shown to have better acquisition performance than the standard sliding correlator. They also achieve reduced computational complexity compared with the ML estimator, while maintaining an acceptable performance degradation.
|Subjects :||Electronic Engineering|
|Divisions :||Faculty of Engineering and Physical Sciences > Electronic Engineering|
|Identification Number :||10.1002/ett.10|
|Copyright Disclaimer :||This is the peer reviewed version of the following article: Xiao, P and Strom, E (2003) Pilot-Aided Acquisition Algorithms for Asynchronous DS-CDMA Systems European Transactions on Telecommunications, 14 (1). pp. 89-96, which has been published in final form at http://dx.doi.org/10.1002/ett.10. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.|
|Depositing User :||Symplectic Elements|
|Date Deposited :||01 Jun 2016 09:45|
|Last Modified :||01 Jun 2016 09:45|
Actions (login required)
Downloads per month over past year