Scanning method for receiving a transmission in a communication system with slow frequency hopping and coding
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United States of America Patent
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Nov 28, 1995
Grant Date -
N/A
app pub date -
Dec 29, 1992
filing date -
Dec 29, 1992
priority date (Note) -
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Abstract
A scanning method for receiving a signal in a frequency hopped communication system that transmits a packet having N segments that are encoded with an error correction code that allows recovery of a packet even if e segments are erasures. A receiving station continuously scans the first p (1.ltoreq.p.ltoreq.e+1) channels, testing each channel for the existence of a transmission. If detected, a segment is received, and then the receiving station sequences through the remaining channels, receiving the segments if possible, and then applying error correction to the complete transmission. This technique of scanning the first several channels, receiving the first unimpaired segment, and thereby gaining the ability to recover all unimpaired segments enables the full theoretical power of a coded, slow frequency hopped system to be realized.
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