Pulse or digital communications – Spread spectrum
Reexamination Certificate
2005-04-11
2008-08-12
Ghayour, Mohammad (Department: 2611)
Pulse or digital communications
Spread spectrum
C375S152000, C708S250000
Reexamination Certificate
active
07411993
ABSTRACT:
Shift code patterns at four continuous phases obtained by dividing 15 shift code patterns given to the respective flip-flops of a linear feedback shift register of degree 4 into four parts are stored in a code memory (11). Besides, mask code patterns to shift a phase of a PN code (PN) to be generated by every four phases, are stored in a code mask memory (12). Next, a logical operation is performed at a phase shift circuit (13) by using the shift code pattern outputted from the code memory (11) and the mask code pattern outputted from the code mask memory (12), to generate a PN code (PN) having a code length of 15 from a random phase.
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Kanasugi Masami
Kuroiwa Koichi
Sunaga Sumimasa
Taniguchi Shoji
Fujitsu Limited
Ghayour Mohammad
Katten Muchin & Rosenman LLP
Panwalkar Vineeta S
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