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Title:
FILTER APPARATUS, RECEPTION APPARATUS, TRANSMISSION APPARATUS, DIFFUSION MODULATION APPARATUS, PSEUDO-RANDOM NUMBER SEQUENCE OUTPUT APPARATUS, FILTER METHOD, RECEPTION METHOD, TRANSMISSION METHOD, DIFFUSION MODULATION METHOD, PSEUDO-RANDOM NUMBER SEQUENCE OUTPUT METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO2002078183
Kind Code:
A8
Abstract:
A filter (201) accepts a diffusion code sequence or the like as an input sequence at the chip late 1/D. The diffusion code sequences accepted are successively delayed by a delay circuit (202) connected in series, and delivered. Delay times of the signals constitute an arithmetic progression having a common difference of the chip length D. Diffusion codes of the signals are amplified by an amplifier (203), so that the amplification ratio constitutes a geometric progression having a common ratio r. A total of the amplified signals is calculated by addition by an adder (204) and the addition result is successively output as an output sequence.

Inventors:
UMENO KEN (JP)
SHIH SHENGHUNG (JP)
YAMAGUCHI AKIHIRO (JP)
Application Number:
JP0202902W
Publication Date:
January 16, 2003
Filing Date:
March 26, 2002
Export Citation:
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Assignee:
JAPAN SCIENCE AND TECHNOLOGY CORPORATION
UMENO, KEN
SHIH, SHENGHUNG
YAMAGUCHI, AKIHIRO
International Classes:
H03H17/02; H03H17/06; H04B1/707; (IPC1-7): H03H17/06; H04J13/04
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