Pulse or digital communications – Synchronizers – Frequency or phase control using synchronizing signal
Reexamination Certificate
2004-04-21
2008-12-09
Corrielus, Jean B (Department: 2611)
Pulse or digital communications
Synchronizers
Frequency or phase control using synchronizing signal
C370S513000
Reexamination Certificate
active
07463709
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 transmitter, a synchronization sequence is transmitted at the beginning of each packet. A synchronization sequence is generated which includes a plurality of symbols with predefined time gaps between each of the symbols. Multiple synchronization sequences may be generated wherein each sequence comprises a unique set of time delays or gaps between each of the symbols. Each set of unique time delays or gaps between symbols of a sequence is stored as a synchronization sequence gap template in memory. When required to generate a synchronization sequence, the sequence generator outputs the plurality of synchronization symbols and inserts a specific time delay between each of the symbols in accordance with the contents of the gap template for the particular synchronization sequence.
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Bassin Evgeny
Kaufman Oren
Raphaeli Dan
Zarud Boris
Corrielus Jean B
Yitran Communications Ltd
Zaretsky Howard
Zaretsky Patent Group PC
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