Cramer-Rao bounds for data-aided sampling clock offset and channel estimation

Author

Gault, Sophie ; Hachem, Walid ; Ciblat, Philippe

Author_Institution

Service Radioelectricite, Supelec, France

Volume

4

fYear

2004

fDate

17-21 May 2004

Abstract

We derive the Cramer-Rao bound (CRB) on the joint estimates of the sampling clock offset and the channel impulse response when a training sequence is available. Simple closed form expressions are obtained for the CRB in the case where the observation window is large, and furthermore in the case where the channel degree is large. Our derivations are suited for single-carrier as well as for multi-carrier orthogonal frequency division multiplexing (OFDM) schemes. Data-aided maximum-likelihood (ML) estimates are also carried out.

Keywords

OFDM modulation; channel estimation; maximum likelihood estimation; signal sampling; synchronisation; transient response; CRB; Cramer-Rao bounds; channel estimation; channel impulse response; data-aided sampling clock offset estimation; large channel degree; maximum-likelihood estimates; multicarrier OFDM; observation window size; orthogonal frequency division multiplexing; single-carrier OFDM; synchronized receiver clock; training sequence; Channel estimation; Clocks; Delay estimation; Digital communication; Frequency estimation; Frequency synchronization; Low pass filters; Maximum likelihood estimation; OFDM; Sampling methods;

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.2004.1327005

Filename

1327005