首页> 外文会议>Sarnoff Symposium, 2009. SARNOFF '09 >Carrier frequency synchronization based on pulse-pair method for 8-VSB DTV systems
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Carrier frequency synchronization based on pulse-pair method for 8-VSB DTV systems

机译:8-VSB数字电视系统基于脉冲对方法的载波频率同步

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Vestigial sideband (VSB) digital TV (DTV) systems do not show good performance in indoor environment or in motion, because they have difficulties in carrier recovery. In this paper, a pulse-pair method is proposed as a new carrier frequency recovery scheme for 8-VSB DTV systems. For estimating the desired frequency offset, the pulse-pair method uses the stochastic characteristics of the autocorrelation of the received 8-VSB pilot signal extracted by pilot extraction filters. Simulation results of the proposed scheme demonstrate that its acquisition range is ±250 kHz and the acquisition time averaged 3.8 ms in fading channels.
机译:前厅边带(VSB)数字电视(DTV)系统在室内环境或运动中表现不佳,因为它们在载波恢复方面有困难。本文提出了一种脉冲对方法,作为8-VSB数字电视系统的一种新的载波频率恢复方案。为了估计所需的频率偏移,脉冲对方法使用了由导频提取滤波器提取的接收到的8-VSB导频信号的自相关的随机特性。仿真结果表明,该方案的捕获范围为±250 kHz,在衰落信道中的捕获时间平均为3.8 ms。

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