Title :
Timing Synchronization for ATSC DTV Receivers Using the Nyquist Sidebands
Author :
Xiong, Jian ; Sun, Jun ; Qin, Lei
Author_Institution :
Inst. of Image Commun. & Inf. Process., Shanghai Jiao Tong Univ., China
Abstract :
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.
Keywords :
Nyquist criterion; digital video broadcasting; error detection; multipath channels; quadrature phase shift keying; synchronisation; television receivers; television standards; 8-VSB modulation; ATSC DTV receiver; BPSK; Gardner timing method; Nyquist sideband; QPSK; S-curve; advanced television systems committee; binary phase shift keying; multipath condition; quadrature phase shift keying; timing error estimation; timing synchronization; vestigial sideband; Arm; Binary phase shift keying; Clocks; Delay estimation; Digital TV; Propagation delay; Quadrature phase shift keying; Sampling methods; Synchronization; Timing; ATSC; DTV; Nyquist sidebands; VSB; timing synchronization;
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2005.851125
