DocumentCode :
3158272
Title :
Low-complexity joint synchronization of symbol timing and carrier frequency for CMMB system
Author :
Shao, Nan ; Chen, Yun ; Xu, Huxiong ; Li, Simeng ; Zeng, Xiaoyang
Author_Institution :
Dept. of Microelectron., Fudan Univ., Shanghai, China
fYear :
2009
fDate :
7-9 Jan. 2009
Firstpage :
192
Lastpage :
195
Abstract :
In the lately released Chinese mobile multimedia broadcasting standard CMMB, cyclic-prefix based OFDM technique has been adopted. Traditional timing synchronization for this system requires a correlator to correlate the last Ng samples of the received OFDM symbol with their copies ahead, and at least N (the length of OFDM symbol) data and Ng correlation results have to be stored for implementation, which results in large consumption of memory. In this paper, a low complexity scheme for the joint synchronization of symbol timing and fractional carrier frequency is proposed. This scheme extremely lowers the hardware cost, especially the memory consumption. Simulation results show that the performance of this algorithm can also meet the need of the system well over both AWGN and typical CMMB multipath channel.
Keywords :
OFDM modulation; communication complexity; mobile communication; multimedia communication; synchronisation; timing; CMMB system; Chinese mobile multimedia broadcasting standard; cyclic-prefix based OFDM technique; fractional carrier frequency; low complexity scheme; low-complexity joint synchronization; memory consumption; symbol timing; timing synchronization; AWGN; Correlators; Costs; Digital multimedia broadcasting; Frequency synchronization; Hardware; Multimedia communication; Multipath channels; OFDM; Timing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Intelligent Signal Processing and Communication Systems, 2009. ISPACS 2009. International Symposium on
Conference_Location :
Kanazawa
Print_ISBN :
978-1-4244-5015-2
Electronic_ISBN :
978-1-4244-5016-9
Type :
conf
DOI :
10.1109/ISPACS.2009.5383870
Filename :
5383870
Link To Document :
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