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Timing Synchronization for ATSC DTV Receivers Using the Nyquist Sidebands

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3 Author(s)
Jian Xiong ; Inst. of Image Commun. & Inf. Process., Shanghai Jiao Tong Univ., China ; Jun Sun ; Lei Qin

Gardner's timing method for BPSK or QPSK is actually one of the timing methods using the Nyquist sidebands. However, it requires at least two samples per symbol; and it is more suitable for two-level modulations. This paper presents another timing synchronization method that is suitable for ATSC DTV receivers, in which 8-VSB modulation is used. The correlation of both arms of the VSB signal is exploited. The S-curve of the proposed method is derived. Derivation shows the proposed method is also using the Nyquist sidebands. It can estimate the timing error even at symbol-rate. Simulations show the proposed method has good performance even in multi-path conditions.

Published in:

IEEE Transactions on Broadcasting  (Volume:51 ,  Issue: 3 )