Title :
A New Frequency Offset Estimation for OFDM-Based Systems
Author :
Fang, Zhi ; Xiao, Wanang ; YinShi
Author_Institution :
Inst. of Semicond., Chinese Acad. of Sci., Beijing
Abstract :
A new carrier frequency offset estimation scheme in orthogonal frequency division multiplexing (OFDM) is proposed. The scheme includes coarse frequency offset estimation and fine frequency offset estimation. The coarse frequency offset estimation method we present is a improvement of Zhang´s method. The estimation range of the new method is as large as the overall signal-band width. A new fine frequency offset estimation algorithm is also discussed in this paper. The new algorithm has a better performance than the Schmidl´s algorithm. The system we use to calculate and simulate is based on the high rate WLAN standard adopted by the IEEE 802.11 standardization group. Numerical results are presented to demonstrate the performance of the proposed algorithm
Keywords :
IEEE standards; OFDM modulation; frequency estimation; telecommunication standards; IEEE 802.11 standardization group; OFDM-based systems; Schmidl algorithm; Zhang method; carrier frequency offset estimation; coarse frequency offset estimation; fine frequency offset estimation; high rate WLAN standard; orthogonal frequency division multiplexing; Bandwidth; Estimation error; Frequency estimation; Frequency measurement; Frequency synchronization; Maximum likelihood estimation; OFDM; Standardization; Timing; Wireless LAN;
Conference_Titel :
Industrial Electronics and Applications, 2006 1ST IEEE Conference on
Conference_Location :
Singapore
Print_ISBN :
0-7803-9513-1
Electronic_ISBN :
0-7803-9514-X
DOI :
10.1109/ICIEA.2006.257282
