Low complexity frequency estimator with close-to-optimum performance

Author

Crozier, S.N.

Author_Institution

Communications Research Centre, Ottawa, Ont., Canada

Volume

1

fYear

1993

fDate

12-15 Oct 1993

Firstpage

426

Abstract

A low complexity, open-loop, discrete-time, delay-multiply-average (DMA) technique for estimating the frequency offset for digitally modulated MPSK signals is investigated. A nonlinearity is used to remove the MPSK modulation and generate the carrier component to be extracted. Theoretical and simulated performance results are presented and compared to the Cramer-Rao lower bound (CRLB) for the variance of the frequency estimation error. For all signal-to-noise ratios (SNRs) above threshold, it is shown that performance very close to the CRLB can be achieved with linear complexity

Keywords

discrete time systems; frequency estimation; phase shift keying; Cramer-Rao lower bound; delay-multiply-average technique; digitally modulated MPSK signals; discrete time; frequency estimation error; frequency estimator; frequency offset; linear complexity; nonlinearity; open loop; performance; Baseband; Chirp modulation; Delay estimation; Digital modulation; Fast Fourier transforms; Frequency estimation; Frequency synchronization; Maximum likelihood estimation; Signal to noise ratio; Uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

Universal Personal Communications, 1993. Personal Communications: Gateway to the 21st Century. Conference Record., 2nd International Conference on

Conference_Location

Ottawa, Ont.

Print_ISBN

0-7803-1396-8

Type

conf

DOI

10.1109/ICUPC.1993.528421

Filename

528421