FR2395652A1 - Procede et dispositif de transmission de signaux numeriques - Google Patents

Procede et dispositif de transmission de signaux numeriques

Info

Publication number
FR2395652A1
FR2395652A1 FR7816423A FR7816423A FR2395652A1 FR 2395652 A1 FR2395652 A1 FR 2395652A1 FR 7816423 A FR7816423 A FR 7816423A FR 7816423 A FR7816423 A FR 7816423A FR 2395652 A1 FR2395652 A1 FR 2395652A1
Authority
FR
France
Prior art keywords
digital signals
transmission
adder
base stations
generator
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
FR7816423A
Other languages
English (en)
Other versions
FR2395652B1 (fr
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Publication of FR2395652A1 publication Critical patent/FR2395652A1/fr
Application granted granted Critical
Publication of FR2395652B1 publication Critical patent/FR2395652B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/67—Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/18—Arrangements for synchronising broadcast or distribution via plural systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/76—Wired systems
    • H04H20/82—Wired systems using signals not modulated onto a carrier
    • H04H20/83—Wired systems using signals not modulated onto a carrier not sharing the network with any other service

Abstract

L'invention concerne la transmission de signaux numériques. Dans une installation dans laquelle plusieurs stations de base émettent simultanément des signaux numériques identiques, chaque station de base comprend un additionneur 151 , 152 qui superpose une onde sinusoïdale obtenue à partir d'un générateur d'horloge 10, à chaque bit du signal numérique d'information que fournit un générateur 16. Le signal de sortie de chaque additionneur module ensuite une onde porteuse qui a la même fréquence pour toutes les stations de base. Application aux réseaux radiotéléphoniques.
FR7816423A 1977-06-20 1978-06-01 Procede et dispositif de transmission de signaux numeriques Expired FR2395652B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7213977A JPS547204A (en) 1977-06-20 1977-06-20 Simultaneous transmission system for plural stations

Publications (2)

Publication Number Publication Date
FR2395652A1 true FR2395652A1 (fr) 1979-01-19
FR2395652B1 FR2395652B1 (fr) 1986-11-21

Family

ID=13480647

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7816423A Expired FR2395652B1 (fr) 1977-06-20 1978-06-01 Procede et dispositif de transmission de signaux numeriques

Country Status (6)

Country Link
US (1) US4223405A (fr)
JP (1) JPS547204A (fr)
CA (1) CA1115776A (fr)
DE (1) DE2817836C3 (fr)
FR (1) FR2395652B1 (fr)
GB (1) GB1602169A (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55157116A (en) * 1979-05-24 1980-12-06 Mitsubishi Electric Corp Signal recording and reproducing device
ZA81878B (en) * 1980-02-18 1982-02-24 Sangamo Weston Transmission systems for transmitting signals over power distribution networks,and transmitters for use therein
JPS5815341A (ja) * 1981-07-22 1983-01-28 Nec Corp 送信ダイバーシティ信号の送信方法および装置
US4570265A (en) * 1981-11-23 1986-02-11 Motorola, Inc. Random frequency offsetting apparatus for multi-transmitter simulcast radio communications systems
US4481670A (en) * 1982-11-12 1984-11-06 Motorola, Inc. Method and apparatus for dynamically selecting transmitters for communications between a primary station and remote stations of a data communications system
US4516269A (en) * 1982-12-10 1985-05-07 Michigan Consolidated Gas Company Automatic equalization for a simulcast communication system
US4584716A (en) * 1984-11-13 1986-04-22 Honeywell Inc. Automatic dual diversity receiver
US4896371A (en) * 1987-11-20 1990-01-23 Kahn Leonard R Synchronous AM transmission system having reduced self interference effects
JPH01184765A (ja) * 1988-01-19 1989-07-24 Sanyo Electric Co Ltd 光ディスク装置
US5930688A (en) * 1992-04-02 1999-07-27 Stanford Telecommunications, Inc. Method and apparatus for intermodulation noise suppression in RF power amplifiers
US5590403A (en) * 1992-11-12 1996-12-31 Destineer Corporation Method and system for efficiently providing two way communication between a central network and mobile unit
US5745840A (en) * 1994-03-22 1998-04-28 Tait Electronics Limited Equalization in a simulcast communication system
JP2802254B2 (ja) * 1996-01-10 1998-09-24 株式会社次世代デジタルテレビジョン放送システム研究所 Ｏｆｄｍシステムとｏｆｄｍ装置
JP2927242B2 (ja) * 1996-06-28 1999-07-28 日本電気株式会社 音声符号データの誤り処理装置及び誤り処理方法
JP5608140B2 (ja) * 2011-03-15 2014-10-15 オムロンオートモーティブエレクトロニクス株式会社 送信装置及び送信方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR647542A (fr) * 1927-02-03 1928-11-26 Lorenz C Ag Procédé pour l'émission radioélectrique par ondes égales
US2904674A (en) * 1956-11-29 1959-09-15 Bell Telephone Labor Inc Radiant energy highway communication system with controlled directive antenna
DE2639432A1 (de) * 1975-09-11 1977-03-17 Int Standard Electric Corp Gleichwellenfunksystem

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2033271A (en) * 1933-04-07 1936-03-10 Bell Telephone Labor Inc Common frequency broadcasting system
US2278779A (en) * 1940-03-15 1942-04-07 Rca Corp Method of reducing multipath effects
US3717814A (en) * 1971-09-23 1973-02-20 Bell Telephone Labor Inc Cophasing diversity communication system with pilot feedback

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR647542A (fr) * 1927-02-03 1928-11-26 Lorenz C Ag Procédé pour l'émission radioélectrique par ondes égales
US2904674A (en) * 1956-11-29 1959-09-15 Bell Telephone Labor Inc Radiant energy highway communication system with controlled directive antenna
DE2639432A1 (de) * 1975-09-11 1977-03-17 Int Standard Electric Corp Gleichwellenfunksystem

Also Published As

Publication number Publication date
US4223405A (en) 1980-09-16
DE2817836C3 (de) 1981-04-23
DE2817836A1 (de) 1978-12-21
DE2817836B2 (de) 1980-09-04
JPS547204A (en) 1979-01-19
JPS617061B2 (fr) 1986-03-04
CA1115776A (fr) 1982-01-05
FR2395652B1 (fr) 1986-11-21
GB1602169A (en) 1981-11-11

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Legal Events

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TP Transmission of property
CA Change of address