Title :
ML-oriented DA sampling clock synchronization for OFDM systems
Author :
Yang, Baoguo ; Ma, Zhengxin ; Cao, Zhigang
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
The paper describes an error feedback loop for performing the data-aided (DA) sampling clock synchronization in orthogonal frequency division multiplexing (OFDM) systems. The algorithm is derived from the joint maximum likelihood (ML) estimation of the sample timing and the carrier phase in the AWGN channel. It is shown that the sample timing estimation variance of the proposed algorithm is asymptotically equal to the Cramer-Rao bound (CRB)
Keywords :
AWGN channels; OFDM modulation; maximum likelihood estimation; phase estimation; signal sampling; synchronisation; AWGN channel; Cramer-Rao bound; ML estimation; OFDM systems; carrier phase; data-aided sampling clock synchronization; error feedback loop; estimation variance; maximum likelihood estimation; orthogonal frequency division multiplexing; sample timing; AWGN channels; Additive white noise; Clocks; Feedback loop; Frequency synchronization; Maximum likelihood estimation; OFDM; Phase estimation; Sampling methods; Timing;
Conference_Titel :
Communication Technology Proceedings, 2000. WCC - ICCT 2000. International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-6394-9
DOI :
10.1109/ICCT.2000.889312
