A residual frequency offset estimation algorithm with uncertainty factor

Author

Joung, Jinsoup ; Stüber, Gordon L.

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

Volume

3

fYear

1997

fDate

4-7 May 1997

Firstpage

1714

Abstract

A new frequency offset estimation algorithm is presented that uses an indicator of the channel status called the uncertainty factor (UF). The UF is calculated for the packet of interest and used to determine if the frequency offset estimate should be updated. If so, then a number of temporary frequency offset estimates are averaged together to obtain the final frequency offset estimate. Computer simulations show that the UF is inversely proportional to the SNR and CIR, and proportional to the frequency selectivity and Doppler frequency of the channel. The new frequency offset estimation algorithm is shown to significantly outperform conventional methods

Keywords

Doppler effect; cellular radio; digital radio; frequency estimation; land mobile radio; packet radio networks; radiofrequency interference; CIR; Doppler frequency; North American IS-54; Personal Digital Cellular; SNR; TDMA cellular systems; channel status; coherent detection; computer simulations; differential detection; frequency selectivity; residual frequency offset estimation algorithm; uncertainty factor; Doppler shift; Fading; Frequency domain analysis; Frequency estimation; Frequency synchronization; Matched filters; Maximum likelihood estimation; Mobile communication; Time division multiple access; Uncertainty;

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.1997.605851

Filename

605851