Invention Grant
US08457255B2 Method and system for applying Viterbi type PSK demodulation for optimum correlation of GPS signals
有权
用于应用维特比型PSK解调的最佳相关GPS信号的方法和系统
- Patent Title: Method and system for applying Viterbi type PSK demodulation for optimum correlation of GPS signals
- Patent Title (中): 用于应用维特比型PSK解调的最佳相关GPS信号的方法和系统
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Application No.: US12553285Application Date: 2009-09-03
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Publication No.: US08457255B2Publication Date: 2013-06-04
- Inventor: Jorgen S. Nielsen
- Applicant: Jorgen S. Nielsen
- Applicant Address: unknown Waterloo, ON
- Assignee: Research In Motion Limited
- Current Assignee: Research In Motion Limited
- Current Assignee Address: unknown Waterloo, ON
- Agency: Moffat & Co.
- Main IPC: H04L27/06
- IPC: H04L27/06
Abstract:
A method of improving sensitivity in the demodulation of a received signal by a receiver over an arbitrary measurement time epoch, said method comprising the steps of correlating said received signal with a local replica of pseudo noise code in a coherent fashion creating a correlation signal and utilizing a Viterbi phase state keying trellis demodulation with a variable resolution of phase states over 0 to 360° to demodulate the radio frequency phase trajectory of said correlation signal throughout the measurement time epoch for improving sensitivity in the demodulation of a received signal.
Public/Granted literature
- US20100027594A1 METHOD AND SYSTEM FOR APPLYING VITERBI TYPE PSK DEMODULATION FOR OPTIMUM CORRELATION OF GPS SIGNALS Public/Granted day:2010-02-04
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