Title :
A novel OFDM frequency offset estimation
Author :
Hong, Bo ; Wang, Xin´an ; Xiao, Gaofa
Author_Institution :
SOC Emphasis Lab, Peking Univ., Beijing
Abstract :
In OFDM systems, because of sensitivity to frequency offset, frequency offset must be compensated before DFT is demodulated in the receiver. In this paper we described a new technique to estimate frequency offset using more than two repeated data symbols. We also discussed different strategies for observation to obtain our estimation. Computer simulation shows our algorithm can obtain good performance both in Gaussian environment and multipath environment
Keywords :
Gaussian channels; OFDM modulation; frequency estimation; multipath channels; Gaussian environment; OFDM frequency offset estimation; multipath environment; repeated data symbols; Computer simulation; Discrete Fourier transforms; Doppler shift; Fast Fourier transforms; Frequency estimation; Gaussian noise; Integrated circuit modeling; Maximum likelihood estimation; OFDM modulation; Transmitters; FFO(fractional frequency offset); carrier frequency offset (CFO); orthogonal frequency-division multiplexing (OFDM);
Conference_Titel :
Advanced Communication Technology, 2006. ICACT 2006. The 8th International Conference
Print_ISBN :
89-5519-129-4
DOI :
10.1109/ICACT.2006.205993
