Fast acquisition of carrier and timing in low SNR and fading using diversity antennas

Author

Cavers, James K.

Author_Institution

Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC, Canada

Volume

3

fYear

1997

fDate

4-7 May 1997

Firstpage

1748

Abstract

The deep fades and rapid phase changes in mobile channels make estimation of carrier frequency and symbol timing quite difficult. This paper presents and analyses a maximum likelihood method for acquisition of these quantities in low SNR, and shows how diversity signals can be exploited to reduce the required time. In consequence, the acquisition time can be as short as 3 or 4 symbols. A primary application is the reverse channel in a PCS or paging system

Keywords

diversity reception; fading; frequency estimation; land mobile radio; maximum likelihood estimation; paging communication; personal communication networks; radiofrequency interference; receiving antennas; synchronisation; time-varying channels; PCS; acquisition time; carrier frequency estimation; diversity antennas; fading; fast acquisition; low SNR; maximum likelihood method; mobile channels; paging system; phase changes; reverse channel; symbol timing estimation; Autocorrelation; Fading; Frequency estimation; Frequency synchronization; Maximum likelihood estimation; Pulse modulation; Pulse shaping methods; Rayleigh channels; Receiving antennas; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1997, IEEE 47th

Conference_Location

Phoenix, AZ

ISSN

1090-3038

Print_ISBN

0-7803-3659-3

Type

conf

DOI

10.1109/VETEC.1997.605858

Filename

605858