JPS6432736A - Code division multiple access communications device - Google Patents

Code division multiple access communications device

Info

Publication number
JPS6432736A
JPS6432736A JP62187652A JP18765287A JPS6432736A JP S6432736 A JPS6432736 A JP S6432736A JP 62187652 A JP62187652 A JP 62187652A JP 18765287 A JP18765287 A JP 18765287A JP S6432736 A JPS6432736 A JP S6432736A
Authority
JP
Japan
Prior art keywords
communications channel
channel
diffusion code
signal
generating circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62187652A
Other languages
Japanese (ja)
Other versions
JP2537520B2 (en
Inventor
Ichiro Kato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP62187652A priority Critical patent/JP2537520B2/en
Publication of JPS6432736A publication Critical patent/JPS6432736A/en
Application granted granted Critical
Publication of JP2537520B2 publication Critical patent/JP2537520B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To detect the signal of a prescribed communications channel without providing as many correlation detecting circuits as ever by timely switching a reference signal specified with a diffusion code corresponding to a communications channel by means of a convolver. CONSTITUTION:At a diffusion code selecting circuit 7, the diffusion code corresponding to the said communications channel inputted from a channel number generating circuit 6 is generated by a diffusion code generating circuit 8. The channel number generating circuit 6 generates, after a prescribed time passes, the channel number corresponding to the next communications channel and waits for the signal of the said communications channel. The above-mentioned action is repeated to all allocated channels, the existence of the signals of all channels is decided, and when the signal exists, the channel number and a synchronizing timing are transmitted to a receiver. Thus, the correlation detecting circuits need not be provided in large numbers, and the communications channel can be specified by a simple and cheap constitution.
JP62187652A 1987-07-29 1987-07-29 Code division multiple access device Expired - Fee Related JP2537520B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62187652A JP2537520B2 (en) 1987-07-29 1987-07-29 Code division multiple access device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62187652A JP2537520B2 (en) 1987-07-29 1987-07-29 Code division multiple access device

Publications (2)

Publication Number Publication Date
JPS6432736A true JPS6432736A (en) 1989-02-02
JP2537520B2 JP2537520B2 (en) 1996-09-25

Family

ID=16209842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62187652A Expired - Fee Related JP2537520B2 (en) 1987-07-29 1987-07-29 Code division multiple access device

Country Status (1)

Country Link
JP (1) JP2537520B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002102730A (en) * 2000-10-03 2002-04-09 Ishikawajima Harima Heavy Ind Co Ltd Vertical mill

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60220635A (en) * 1984-04-17 1985-11-05 Clarion Co Ltd Spread spectrum transmitter and receiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60220635A (en) * 1984-04-17 1985-11-05 Clarion Co Ltd Spread spectrum transmitter and receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002102730A (en) * 2000-10-03 2002-04-09 Ishikawajima Harima Heavy Ind Co Ltd Vertical mill

Also Published As

Publication number Publication date
JP2537520B2 (en) 1996-09-25

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees