Initial frequency acquisition in W-CDMA

Author

Wang, Yi-Pin Eric ; Ottosson, Tony

Author_Institution

Ericsson Inc., NC, USA

Volume

2

fYear

1999

fDate

1999

Firstpage

1013

Abstract

In this paper, methods of estimating the initial frequency error are proposed and evaluated for a mobile station (MS) operated in a wideband code division multiple access (W-CDMA) system. It is assumed that the initial frequency error of a MS can be as large as ±20 kHz due to the inaccuracy of the crystal oscillator. The proposed methods are based on the fast Fourier transform (FFT) technique with quadratic interpolation in the frequency domain to improve the accuracy of frequency estimation. It is found that the proposed FFT based algorithms achieve much better performance when compared to a differential phase detection approach

Keywords

broadband networks; code division multiple access; fast Fourier transforms; frequency estimation; frequency-domain analysis; interpolation; maximum likelihood detection; maximum likelihood estimation; mobile radio; FFT based algorithms; W-CDMA; fast Fourier transform; frequency domain; frequency estimation; initial frequency acquisition; initial frequency error estimation; mobile station; quadratic interpolation; wideband code division multiple access; Discrete Fourier transforms; Fast Fourier transforms; Frequency estimation; Interpolation; Maximum likelihood estimation; Multiaccess communication; Oscillators; Signal processing; Signal to noise ratio; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th

Conference_Location

Amsterdam

ISSN

1090-3038

Print_ISBN

0-7803-5435-4

Type

conf

DOI

10.1109/VETECF.1999.798588

Filename

798588