Initial frequency synchronization mechanism
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United States of America Patent
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Jan 16, 2001
Grant Date -
N/A
app pub date -
Jan 23, 1998
filing date -
Jan 23, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method for acquiring frequency of a desired channel having a carrier frequency F.sub.MAIN, for a dynamic receiver frequency F.sub.MOBILE, from a starting frequency F.sub.START, in the presence of high power adjacent interfering channels, wherein the starting frequency F.sub.START is shifted from F.sub.MAIN by not more than a predetermined frequency gap .DELTA.F, the method includes the steps of determining a first frequency boundary and a second frequency boundary, detecting channels within a filtering bandwidth, selecting a dominant channel from the detected channels, progressing the dynamic receiver frequency F.sub.MOBILE towards the carrier frequency of the dominant channel, detecting when the step of progressing has exceeded one of the first frequency boundary and the second frequency boundary, restarting the step of detecting channels, from the other of the one of the first frequency boundary and the second frequency boundary, and repeating from the step of detecting channels.
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