Title :
A new synchronization scheme for OFDM systems
Author :
Wang, Chin-Liang ; Chiang, Ming-Hsuan ; Wang, Hung-Chin
Author_Institution :
Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
We present a new pilot OFDM symbol which is suitable for use in both synchronization and channel estimation. Based on the new pilot OFDM symbol, we propose a new synchronization scheme that consists of a frequency offset estimation method and a fine frame synchronization method assisted by the estimated frequency responses on some subcarriers and a predefined synchronization pilot tone. A number of computer simulation results are given to demonstrate the usefulness and effectiveness of the proposed approach in wireless environments.
Keywords :
OFDM modulation; channel estimation; frequency estimation; radio networks; synchronisation; DAB; DVB; HIPERLAN/2; IEEE 802.11a WLAN; channel estimation; frame synchronization method; frequency offset estimation; frequency response; pilot OFDM symbol; predefined synchronization pilot tone; wireless channels; Channel estimation; Computer simulation; Delay; Digital video broadcasting; Discrete Fourier transforms; Frequency estimation; Frequency synchronization; Interference; Maximum likelihood estimation; OFDM;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th
Print_ISBN :
0-7803-8255-2
DOI :
10.1109/VETECS.2004.1389002
