Title :
A New Fast CFO Tracking Algorithm for OFDM Systems
Author :
Zhu, Qiuping ; Wang, Weibing ; Liu, Yaxian
Author_Institution :
Sch. of Electron. & Inf. Eng., Wuhan Univ., Wuhan, China
Abstract :
In this paper, a new improved CFO tracking algorithm for OFDM systems is proposed. It is based on the fact that energy on virtual subcarriers could be quadratic or trigonometric with CFO estimation errors when it´s small, so the CFO can be estimated by coarse search and interpolation. Simulation results suggest that performance of the proposed method is equivalent with enumeration method while the computation burden of the proposed algorithm is only ten percent of the latter´s.
Keywords :
OFDM modulation; OFDM system; carrier frequency offset estimation errors; carrier frequency offset tracking algorithm; virtual subcarriers; Approximation methods; Complexity theory; Estimation; Frequency estimation; Frequency synchronization; OFDM; Signal processing algorithms;
Conference_Titel :
Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-3708-5
Electronic_ISBN :
978-1-4244-3709-2
DOI :
10.1109/WICOM.2010.5600202
