Title :
Difference function based symbol timing recovery for OFDM systems
Author_Institution :
Chunghwa Telecomm Labs., Wireless Commun. Tech. Lab, Taoyuan, Taiwan
Abstract :
A difference function based symbol timing recovery algorithm for OFDM systems in presented . The algorithm is derived according to maximum likelihood (ML) algorithm utilizing cyclic prefix (CP), which is appended in front of each OFDM symbol. Simulation results show that the performance of the proposed algorithm is better than conventional ML algorithm in an additive white Gaussian noise (AWGN) channel. Furthermore, the implementation complexity is lower than that of the ML algorithm.
Keywords :
AWGN channels; OFDM modulation; difference equations; functional equations; maximum likelihood estimation; synchronisation; AWGN channel; ML algorithm; ML estimation algorithm; MLE algorithm; OFDM systems; additive white Gaussian noise channel; cyclic prefix; difference function based symbol timing recovery; implementation complexity; maximum likelihood algorithm; simulation results; symbol timing recovery algorithm; AWGN; Delay estimation; Digital audio broadcasting; Digital video broadcasting; Fast Fourier transforms; Interference; Maximum likelihood estimation; OFDM; Timing; Wireless LAN;
Conference_Titel :
Communication Systems, 2002. ICCS 2002. The 8th International Conference on
Print_ISBN :
0-7803-7510-6
DOI :
10.1109/ICCS.2002.1182534
