Invention Grant
US06807157B2 Method and apparatus for coherent demodulation in communication system employing a potentially gated pilot signal
失效
在采用潜在门控导频信号的通信系统中进行相干解调的方法和装置
- Patent Title: Method and apparatus for coherent demodulation in communication system employing a potentially gated pilot signal
- Patent Title (中): 在采用潜在门控导频信号的通信系统中进行相干解调的方法和装置
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Application No.: US10441592Application Date: 2003-05-19
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Publication No.: US06807157B2Publication Date: 2004-10-19
- Inventor: Tao Chen , Yu-Chuan Lin
- Applicant: Tao Chen , Yu-Chuan Lin
- Main IPC: H04J116
- IPC: H04J116

Abstract:
The present invention is a novel and improved method and system for performing the pilot frequency tracking operation for coherent demodulation in a system employing a gated pilot signal. In particular, the present invention describes a method and apparatus in which two frequency tracking loops operate in parallel. The first frequency tracking loop performs its tracking operation based on the hypothesis that the received pilot is continuous throughout the frame's duration. The second frequency tracking loop performs the tracking operation based on the hypothesis that the received pilot is discontinuous and is only present for a portion of the frame's duration.
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