On the guard band-based coarse frequency offset estimation technique for burst OFDM systems

Author

Prasetyo, B.Y. ; Said, F. ; Aghvami, A.H.

Author_Institution

Centre for Telecommun. Res., King´´s Coll., London, UK

Volume

1

fYear

2000

fDate

2000

Firstpage

220

Abstract

A multiple number of subcarrier frequency offsets is estimated in the frequency domain. This is achieved by adjusting the power of the reference symbol transmitted and utilizing a guard-band power detection method in the receiver. The power of the start symbol of two repetitive symbols, which also acts as a reference symbol in differential modulation, is varied linearly in the frequency domain to increase the power difference between modulated (valid) subcarriers and noisy non-modulated (virtual) carriers. The performance of the proposed frame is confirmed by simulation for a DQPSK system in a multipath-fading environment

Keywords

OFDM modulation; differential phase shift keying; error statistics; fading channels; frequency estimation; frequency-domain analysis; multipath channels; quadrature phase shift keying; signal detection; simulation; wireless LAN; DQPSK system; burst OFDM systems; coarse frequency offset estimation; differential modulation; error probability reduction; frequency domain; guard-band power detection method; modulated subcarriers; multipath-fading environment; noisy nonmodulated carriers; receiver; reference symbol; simulation; start symbol power; subcarrier frequency offsets; symbol power adjustment; wireless LAN; AWGN; Chirp modulation; Communication standards; Fading; Frequency domain analysis; Frequency estimation; Gaussian noise; Intersymbol interference; OFDM modulation; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st

Conference_Location

Tokyo

ISSN

1090-3038

Print_ISBN

0-7803-5718-3

Type

conf

DOI

10.1109/VETECS.2000.851450

Filename

851450