Title :
A low-complexity blind CFO estimation for OFDM systems
Author :
Tzu-Chiao Lin ; See-May Phoong
Author_Institution :
Dept. of EE, Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
The estimation of carrier frequency offset (CFO) is an important issue in the study of the orthogonal frequency division multiplexing (OFDM) systems. In the past, many CFO estimation methods have been proposed. In this paper, we propose a new blind CFO estimation for OFDM systems based on the so-called remodulated received vectors [8]. The CFO estimate is given by a closed form formula. The proposed method has very low complexity and its performance is robust to different modulation symbols and the presence of virtual carriers.
Keywords :
OFDM modulation; frequency estimation; OFDM systems; carrier frequency offset; closed form formula; low-complexity blind CFO estimation method; modulation symbols; orthogonal frequency division multiplexing; remodulated received vectors; virtual carriers; Complexity theory; Estimation; Frequency estimation; OFDM; Phase shift keying; Vectors; blind estimation; carrier frequency offset (CFO); orthogonal frequency division multiplexing (OFDM);
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2014 IEEE International Conference on
Conference_Location :
Florence
DOI :
10.1109/ICASSP.2014.6855175
