Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-05-30
2006-05-30
Deppe, Betsy L. (Department: 2637)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S142000
Reexamination Certificate
active
07054355
ABSTRACT:
In a spread spectrum communication using a long spreading code, a spread spectrum signal processing apparatus is provided, which is suitable for performing communication by using a correlator having a size mountable on a portable equipment. The spread spectrum signal processing apparatus has a correlator for correlating between a spread spectrum signal and a given reference signal, an A/D converter for converting a correlation signal into a digital signal, a memory for storing the digital signal from the AD converter as digital data, a signal processor for summing digital data corresponding to each of divided codes C1–C16and for outputting a result of summation, and a control unit for controlling to apply each of the divided codes C1–C16in this order repeatedly as a reference signal to the correlator. The signal processor begins a summing process by making reference to a timing signal from the control unit.
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Kanno Yasuhito
Kato Hiroyuki
Yamanouchi Kazuhiko
Asahi Kasei Kabushiki Kaisha
Deppe Betsy L.
Dickstein Shapiro Morin & Oshinsky LLP.
Yamanouchi Kazuhiko
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