Pulse or digital communications – Repeaters – Testing
Patent
1992-12-29
1995-11-28
Gangialosi, Salvatore
Pulse or digital communications
Repeaters
Testing
H04B 1713
Patent
active
054715032
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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Altmaier Paulette R.
Potrebic Peter J.
Apple Computer Inc.
Gangialosi Salvatore
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