Sequence synchronization
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United States of America Patent
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-
Jun 14, 1994
Grant Date -
N/A
app pub date -
Feb 2, 1993
filing date -
Sep 19, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A data sequence is transmitted from a transmitter to a receiver, being scrambled at the transmitter by adding a pseudo random sequence (PRS) thereto. At the receiver the received data is unscrambled by subtraction of the same PRS. The receiver PRS generator is synchronised to the transmitter PRS generator by means of samples conveyed from the transmitter to the receiver. The transmitter includes a PRS sample mapping block, the receiver includes a functionally complementary sample mapping block and the time of transmission of the conveyed samples is decoupled from the points in the PRS for which they were selected, the conveyed samples being skewed with respect to the PRS.
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