Multipath delay acquisition in asynchronous doubly-selective DS/CDMA fading channels

Author

Buzzi, Stefano ; Venturino, Luca ; Zappone, Alessio

Author_Institution

DAEIMI, Univ. of Cassino, Cassino, Italy

Volume

14

Issue

4

fYear

2010

fDate

4/1/2010 12:00:00 AM

Firstpage

276

Lastpage

278

Abstract

In this letter, we investigate the problem of estimating the multipath signal delays in an asynchronous direct-sequence/code-division-multiple-access (DS/CDMA) system operating over a doubly-selective fading channel. A novel blind estimation procedure is proposed which only requires knowledge of the spreading code of the user of interest, but no prior information as to the transmitted data symbols and the structure of the multiaccess interference. Numerical examples are provided to assess the performance of the proposed algorithm.

Keywords

code division multiple access; delays; fading channels; intersymbol interference; multipath channels; DS-CDMA; asynchronous direct sequence system; blind estimation procedure; code division multiple access; fading channels; multiaccess interference; multipath delay acquisition; Bandwidth; Delay estimation; Fading; Fluctuations; Helium; Interference; Multiaccess communication; Multipath channels; Stochastic processes; Timing; Asynchronous DS/CDMA, doubly-selective fading, multipath, timing acquisition;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2010.04.091882

Filename

5439337