Pulse or digital communications – Spread spectrum
Reexamination Certificate
2006-10-10
2006-10-10
Tran, Khanh (Department: 2611)
Pulse or digital communications
Spread spectrum
C375S143000, C375S150000, C375S152000
Reexamination Certificate
active
07120186
ABSTRACT:
Methods and apparatus for use in generating data sequences for direct sequence spread spectrum (DSSS) communications are described. One exemplary method includes the steps of serially generating a pseudo random noise (PN) sequence by, for each count value i of a plurality of count values, retrieving from memory a bit of the PN sequence corresponding to the (i)th position in the PN sequence. The exemplary method includes the further steps of serially generating a Gold code sequence by, for each count value i of the plurality of count values, retrieving from memory a bit of the PN sequence corresponding to the (i+n)th position in the PN sequence, retrieving from memory a bit of the PN sequence corresponding to the (q*i)th position in the PN sequence, and adding the bit corresponding to the (i+n)th position with the bit corresponding to the (q*i)th position.
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patent: 6452959 (2002-09-01), McDonough
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patent: 6650687 (2003-11-01), McDonough
Ahn Sam K.
Brady III Wade J.
Neerings Ronald O.
Tran Khanh
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