A low-complexity semi-blind carrier frequency offset estimator for MIMO-OFDM systems

Author

Jing, Jun ; Xu, Youyun ; Cai, Yueming

Author_Institution

Inst. of Commun. Eng., PLAUST, Nanjing

fYear

2007

fDate

12-15 Feb. 2007

Firstpage

1

Lastpage

4

Abstract

Carrier frequency synchronization is a key problem for MIMO-OFDM systems. In this paper, a low-complexity semi-blind carrier frequency offset (CFO) estimation method exploiting the known intrinsic structure information of OFDM signalspsila virtual carriers has been presented. Within small estimation range, the new method can get highly accurate CFO estimation. When the estimation range is widened, by using more terms of Taylorpsilas series approximation and introducing iterative technique, high accuracy can be still remained.

Keywords

MIMO communication; OFDM modulation; iterative methods; MIMO-OFDM systems; Taylor series approximation; carrier frequency synchronization; intrinsic structure information; iterative technique; low-complexity semi-blind carrier frequency offset estimator; virtual carriers; Baseband; Computational complexity; Cost function; Frequency estimation; Frequency synchronization; Maximum likelihood estimation; OFDM modulation; Performance loss; Taylor series; Yield estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Its Applications, 2007. ISSPA 2007. 9th International Symposium on

Conference_Location

Sharjah

Print_ISBN

978-1-4244-0778-1

Electronic_ISBN

978-1-4244-1779-8

Type

conf

DOI

10.1109/ISSPA.2007.4555617

Filename

4555617