Exploiting hidden pilots for carrier frequency offset estimation for generalized MC-CDMA systems

Author

Yi Ma ; Tafazolli, Rahim

Author_Institution

Center for Commun. Syst. Res., Surrey Univ., Guildford

fYear

2005

fDate

17-20 July 2005

Firstpage

1318

Lastpage

1323

Abstract

This paper proposes a novel carrier frequency offset (CFO) estimation method for generalized MC-CDMA systems in unknown frequency-selective channels utilizing hidden pilots. It is established that CFO is identifiable in the frequency-domain by employing cyclic statistics (CS) and linear regression (LR) algorithms. We show that the CS-based estimator is capable of mitigating the normalized CFO (NCFO) to a small error value. Then, the LR-based estimator can be employed to offer more accurate estimation by removing the residual quantization error after the CS-based estimator

Keywords

channel estimation; code division multiple access; frequency estimation; regression analysis; time-frequency analysis; carrier frequency offset estimation; cyclic statistics; frequency-selective channels; generalized MC-CDMA systems; linear regression algorithms; quantization error; Downlink; Frequency division multiplexing; Frequency estimation; Frequency-selective fading channels; Linear regression; Multiaccess communication; Multicarrier code division multiple access; Quantization; Redundancy; Statistics;

fLanguage

English

Publisher

ieee

Conference_Titel

Statistical Signal Processing, 2005 IEEE/SP 13th Workshop on

Conference_Location

Novosibirsk

Print_ISBN

0-7803-9403-8

Type

conf

DOI

10.1109/SSP.2005.1628800

Filename

1628800