Acquisition of sychronization in a spread spectrum communications transceiver
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United States of America Patent
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Apr 27, 2004
Grant Date -
Mar 4, 2004
app pub date -
Aug 20, 2001
filing date -
Aug 20, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A novel and useful acquisition and synchronization mechanism for spread spectrum communication systems whereby a synchronization sequence comprising a plurality of known symbols spaced apart by predefined time delay intervals is transmitted as the start of packet signal. At the receiver, the received signal is correlated against the synchronization sequence using the predefined gaps or time delay intervals inserted between the symbols. The received signal is linearly correlated to generate a correlation peak for each symbol received. The expected position of each correlation peak is calculated and compared to the positions of the correlation peaks received. If the number of matches exceeds a threshold, synchronization is declared.
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