A new frequency offset estimation technique for up-link MC-CDMA systems

Author

Purwoko, Adhi ; Ali, Hassan

Author_Institution

Dept. of Electr. & Comput. Eng., Curtin Univ. of Technol., Perth, WA, Australia

Volume

4

fYear

2004

fDate

17-21 May 2004

Abstract

We propose a new technique of frequency synchronization for the up-link in an MC-CDMA system. The frequency offset estimation is done in the frequency domain, by estimating the phase difference between two consecutive MC-CDMA symbols of the user of interest. The phase alternation, caused by transmitted user symbols, is eliminated using the knowledge of the previous estimated frequency offset and the fact that the latter is very slowly varying. This eliminates the need of knowledge of user symbols and renders the technique blind.

Keywords

OFDM modulation; code division multiple access; frequency estimation; frequency-domain analysis; synchronisation; MC-CDMA system uplink; OFDM; frequency domain; frequency offset estimation; frequency synchronization; multicarrier code division multiple access; orthogonal frequency division multiplexing; phase alternation; phase difference; user symbols; Base stations; Channel estimation; Fading; Frequency domain analysis; Frequency estimation; Frequency synchronization; Multiaccess communication; Multicarrier code division multiple access; OFDM; Phase estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-8484-9

Type

conf

DOI

10.1109/ICASSP.2004.1326940

Filename

1326940