A time domain carrier frequency offset estimation method for OFDM systems

Author

Soysal, Bird ; Özen, Ali ; Kaya, Ismail

Author_Institution

Elektrik Elektron. Muhendisligi Bolumu, Karadeniz Tech. Univ., Trabzon, Turkey

fYear

2004

fDate

28-30 April 2004

Firstpage

538

Lastpage

541

Abstract

A time domain carrier frequency offset estimation method is proposed for OFDM systems. The essence of the proposed method is based on the correlation features of short and long synchronisation symbols, which appear at the beginning of each frame as the training sequence. The noise effect on the estimation is minimised by averaging over several estimations. The time-domain operations and correcting bigger carrier frequency offsets compared to the work by P.H. Moose (see IEEE Trans. Commun., vol.42, no.10, p.2908-14, 1994) are the important features of this study. The proposed method has a lower complexity and better BER performance for higher frequency offset values compared to the referenced studies.

Keywords

OFDM modulation; computational complexity; error statistics; frequency estimation; minimisation; random noise; synchronisation; time-domain analysis; BER performance; OFDM systems; correlation features; noise effect; synchronisation symbols; time domain carrier frequency offset estimation; training sequence; Art; Birds; Bit error rate; Delay; Frequency division multiplexing; Frequency estimation; Frequency synchronization; Intersymbol interference; OFDM; Signal analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Communications Applications Conference, 2004. Proceedings of the IEEE 12th

Print_ISBN

0-7803-8318-4

Type

conf

DOI

10.1109/SIU.2004.1338584

Filename

1338584