Cramer-Rao Bound for Joint Carrier Frequency Offset, Symbol Timing Offset and Channel Taps in MC-CDMA Systems

Author

Seirafian, Amir ; Vakili, Vahid Tabataba

Author_Institution

Dept. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran

fYear

2008

fDate

28-30 April 2008

Firstpage

1

Lastpage

5

Abstract

In this paper, Cramer-Rao bound (CRB) for joint carrier frequency and symbol timing offsets and channel taps is proposed for multi carrier code division multiple access (MC- CDMA) systems. CRB provides a benchmark by which, the performance of any unbiased estimator can be compared. Minimum variance unbiased (MVU) estimator is the one that attains the CRB for all values of the unknown parameter. We further compare the performances of the MVU and maximum likelihood (ML) estimators presented in [1] by numerical results with the proposed CRB.

Keywords

code division multiple access; maximum likelihood estimation; Cramer-Rao bound; MC-CDMA systems; channel taps; joint carrier frequency offset; maximum likelihood estimators; minimum variance unbiased estimator; multi carrier code division multiple access systems; symbol timing offset; Additive white noise; Delay; Filters; Frequency conversion; Frequency estimation; Maximum likelihood estimation; Multicarrier code division multiple access; OFDM; Time domain analysis; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Sarnoff Symposium, 2008 IEEE

Conference_Location

Princeton, NJ

Print_ISBN

978-1-4244-1843-5

Type

conf

DOI

10.1109/SARNOF.2008.4520096

Filename

4520096