A blind frequency domain method for DS-CDMA synchronization using antenna arrays

Author

Jakobsson, Andreas ; Swindlehurst, A. Lee ; Astély, David ; Tidestav, Claes

Author_Institution

Syst. & Control Group, Uppsala Univ., Sweden

Volume

2

fYear

1998

fDate

1-4 Nov. 1998

Firstpage

1848

Abstract

A blind frequency domain method for estimating the propagation delays of DS-CDMA signals is presented. The algorithm is formulated using an antenna array, and uses the fact that the spatially and temporally correlated additive noise, consisting of both interfering users and thermal noise, will be asymptotically uncorrelated on the FFT frequency grid. The algorithm is computationally simple, and can be efficiently implemented using the FFT algorithm. Simulations illustrate that near-far resistance can be achieved using spatial diversity.

Keywords

antenna arrays; array signal processing; cellular radio; delay estimation; diversity reception; fast Fourier transforms; frequency-domain analysis; spread spectrum communication; synchronisation; thermal noise; DS-CDMA signals; DS-CDMA synchronization; FFT algorithm; FFT frequency grid; antenna arrays; blind frequency domain method; cellular radio; correlated additive noise; interfering users; near-far resistance; propagation delay estimation; simulations; spatial diversity; thermal noise; Additive noise; Antenna arrays; Antennas and propagation; Computational modeling; Delay estimation; Frequency domain analysis; Frequency estimation; Frequency synchronization; Multiaccess communication; Propagation delay;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems & Computers, 1998. Conference Record of the Thirty-Second Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-5148-7

Type

conf

DOI

10.1109/ACSSC.1998.751643

Filename

751643