Title :
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
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;
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
DOI :
10.1109/ISSPA.2007.4555617
