Further results in carrier frequency estimation for transmissions over flat fading channels

Author

Morelli, M. ; Mengali, U. ; Vitetta, G.M.

Author_Institution

CNR, Pisa, Italy

Volume

2

Issue

12

fYear

1998

Firstpage

327

Lastpage

330

Abstract

A data-aided feedforward algorithm has been proposed by Kuo and Fitz (see IEEE Trans. Commun., vol.45, p.1412-26, 1997) for carrier frequency estimation in M-ary phase-shift keying (PSK) transmissions over frequency-flat Rayleigh fading channels. Its accuracy is very good but the estimation range may be limited under certain operating conditions. Also, its application requires a knowledge of the Doppler bandwidth. We show that the estimation range can be greatly extended without sacrificing the estimation accuracy and a simple technique is indicated to measure the Doppler bandwidth. This allows the algorithm to operate in an adaptive manner in a time-varying environment.

Keywords

Doppler effect; Rayleigh channels; adaptive estimation; digital communication; feedforward; frequency estimation; phase shift keying; time-varying channels; Doppler bandwidth measurement; M-ary phase-shift keying; PSK transmissions; SNR; adaptive algorithm; carrier frequency estimation; data-aided feedforward algorithm; digital transmissions; estimation accuracy; estimation range; frequency-flat Rayleigh fading channels; time-varying environment; AWGN; Additive white noise; Bandwidth; Channel state information; Fading; Frequency estimation; Matched filters; Phase shift keying; Pulse modulation; Random variables;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.736174

Filename

736174