TY - GEN
T1 - A joint synchronization algorithm for OFDM systems
AU - Chin, Wen Long
AU - Chen, Sau Gee
AU - Chen, Chih Liang
PY - 2007
Y1 - 2007
N2 - This work presents a joint maximum-likelihood (ML) synchronization algorithm for symbol time (ST) offset (STO), carrier frequency offset (CFO) and sampling clock frequency offset (SCFO) for OFDM systems. Unlike most existing techniques which are time-domain approaches considering only AWGN and/or static multipath conditions, the proposed algorithm is developed in frequency-domain under time-variant multipath channels. By analyzing the received frequency-domain data, a mathematical model for the joint effects of STO, CFO and SCFO is derived. The results are used to formulate a log-likelihood function of two consecutive symbols. Based on the function, a joint ML algorithm is proposed. The joint algorithm is both efficient and robust, because the three main synchronization issues are treated altogether. Simulation results exhibit high performances in time-variant multipath fading channels.
AB - This work presents a joint maximum-likelihood (ML) synchronization algorithm for symbol time (ST) offset (STO), carrier frequency offset (CFO) and sampling clock frequency offset (SCFO) for OFDM systems. Unlike most existing techniques which are time-domain approaches considering only AWGN and/or static multipath conditions, the proposed algorithm is developed in frequency-domain under time-variant multipath channels. By analyzing the received frequency-domain data, a mathematical model for the joint effects of STO, CFO and SCFO is derived. The results are used to formulate a log-likelihood function of two consecutive symbols. Based on the function, a joint ML algorithm is proposed. The joint algorithm is both efficient and robust, because the three main synchronization issues are treated altogether. Simulation results exhibit high performances in time-variant multipath fading channels.
UR - http://www.scopus.com/inward/record.url?scp=44349147836&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=44349147836&partnerID=8YFLogxK
U2 - 10.1109/PIMRC.2007.4394410
DO - 10.1109/PIMRC.2007.4394410
M3 - Conference contribution
AN - SCOPUS:44349147836
SN - 1424411440
SN - 9781424411443
T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
BT - 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07
T2 - 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07
Y2 - 3 September 2007 through 7 September 2007
ER -