Title :
A New OFDM Blind Synchronization Algorithm Suitable for PLC
Author :
Wang, Jili ; Jia, Zhenhong ; Qin, Xizhong ; Li, Tao ; Zhao, Junkai
Author_Institution :
Coll. of Inf. Sci. & Eng., Xinjiang Univ., Urumuqi, China
Abstract :
Making full use of the characteristics of the power line channel, a new blind OFDM (orthogonal frequency multiplexing) synchronization method based on Maximum Likelihood-type (ML) algorithms is proposed. This method is effective to overcome the limitations that the ML-type algorithms are not fit for the power line channel, which have multipath effect. Theoretical analysis and computer simulation results show that the method perform well in estimation of the timing and carrier frequency offset (CFO) in the PLC (power line communication) system based on OFDM, especially in high SNR. Besides these facts, the amount of the computation is less than the original ML-type synchronization algorithms.
Keywords :
OFDM modulation; carrier transmission on power lines; maximum likelihood estimation; synchronisation; OFDM blind synchronization; carrier frequency offset; maximum likelihood estimation; multipath effect; power line communication; Additive white noise; Attenuation; Costs; Fading; Frequency estimation; Frequency synchronization; Gaussian noise; Maximum likelihood estimation; OFDM; Programmable control;
Conference_Titel :
Image and Signal Processing, 2009. CISP '09. 2nd International Congress on
Conference_Location :
Tianjin
Print_ISBN :
978-1-4244-4129-7
Electronic_ISBN :
978-1-4244-4131-0
DOI :
10.1109/CISP.2009.5304582
