DE3483089D1 - Radiouebertragungssystem. - Google Patents

Radiouebertragungssystem.

Info

Publication number: DE3483089D1
Authority: DE; Germany
Prior art keywords: transmission system; radio transmission; radio; transmission
Prior art date: 1983-11-30
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.): Expired - Lifetime

Application number

DE8484114524T

Other languages

English (en)

Inventor

Eisuke Nakayama Bldg Fukuda

Yukio Takeda

Yoshimasa Daido

Hiroshi Nakamura

Susumu Sasaki

Sadao Takenaka

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.)

Fujitsu Ltd

Original Assignee

Fujitsu Ltd

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.)

1983-11-30

Filing date

1984-11-30

Publication date

1990-10-04

1983-11-30 Priority claimed from JP58225637A external-priority patent/JPS60117945A/ja

1984-01-19 Priority claimed from JP59007454A external-priority patent/JPS60152156A/ja

1984-11-30 Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd

1990-10-04 Application granted granted Critical

1990-10-04 Publication of DE3483089D1 publication Critical patent/DE3483089D1/de

2004-12-01 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/38—Demodulator circuits; Receiver circuits
- H04L27/3818—Demodulator circuits; Receiver circuits using coherent demodulation, i.e. using one or more nominally phase synchronous carriers
- H04L27/3827—Demodulator circuits; Receiver circuits using coherent demodulation, i.e. using one or more nominally phase synchronous carriers in which the carrier is recovered using only the demodulated baseband signals
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/345—Modifications of the signal space to allow the transmission of additional information
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
- H04L27/362—Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

DE8484114524T 1983-11-30 1984-11-30 Radiouebertragungssystem. Expired - Lifetime DE3483089D1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP58225637A JPS60117945A (ja)	1983-11-30	1983-11-30	無線通信システム
JP59007454A JPS60152156A (ja)	1984-01-19	1984-01-19	サ−ビスチヤンネル信号挿入方式

Publications (1)

Publication Number	Publication Date
DE3483089D1 true DE3483089D1 (de)	1990-10-04

Family

ID=26341751

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8484114524T Expired - Lifetime DE3483089D1 (de)	1983-11-30	1984-11-30	Radiouebertragungssystem.

Country Status (5)

Country	Link
US (1)	US4665532A (de)
EP (1)	EP0144083B1 (de)
KR (1)	KR890000573B1 (de)
CA (1)	CA1232022A (de)
DE (1)	DE3483089D1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AU589084B2 (en) *	1986-02-08	1989-09-28	Nec Corporation	Multilevel modulator capable of producing a composite modulated signal comprising a quadrature amplitude modulated component and a phase modulated component
JP2595961B2 (ja) *	1987-04-03	1997-04-02	日本電気株式会社	デイジタル変復調システム
JPS6455942A (en) *	1987-08-27	1989-03-02	Fujitsu Ltd	Multi-value quadrature amplitude modulation demodulation system
JPH02295260A (ja) *	1989-05-10	1990-12-06	Toshiba Corp	変調器
US5287351A (en) *	1990-11-27	1994-02-15	Scientific-Atlanta, Inc.	Method and apparatus for minimizing error propagation in correlative digital and communication system
RU2031855C1 (ru) *	1991-04-26	1995-03-27	Научно-производственная фирма "Экомодуль"	Способ очистки сточных вод и устройство для его осуществления
US5271041A (en) *	1992-03-16	1993-12-14	Scientific-Atlanta, Inc.	Method and apparatus for QPR carrier recovery
DE69636298T2 (de) *	1995-07-12	2007-05-31	Nec Corp.	Methode und Vorrichtung für mehrstufige Quadratur-Amplitudenmodulation
US5790567A (en) *	1995-08-28	1998-08-04	California Institute Of Technology	Parallel processing spacecraft communication system
US7693236B2 (en) *	2000-05-15	2010-04-06	Texas Instruments Incorporated	If-to-baseband conversion for flexible frequency planning capability
US8229022B2 (en)	2005-10-21	2012-07-24	Nec Corporation	Modulation and demodulation method, modulation apparatus and demodulation apparatus
JP5772557B2 (ja) *	2011-12-08	2015-09-02	富士通株式会社	増幅器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2957947A (en) *	1957-02-20	1960-10-25	Bell Telephone Labor Inc	Pulse code transmission system
NL274976A (de) *	1962-02-19
BE631946A (de) *	1962-05-07
BE635102A (de) *	1962-07-19
GB973787A (en) *	1963-05-24	1964-10-28	Standard Telephones Cables Ltd	Pulse code modulation system
NL294442A (de) *	1963-06-21
US3955141A (en) *	1974-10-18	1976-05-04	Intertel, Inc.	Synchronizing circuit for modems in a data communications network
US4408189A (en) *	1981-05-18	1983-10-04	Northern Telecom Limited	Method and apparatus for code conversion of binary to multilevel signals
US4519073A (en) *	1983-06-20	1985-05-21	At&T Bell Laboratories	Bit compression multiplexer
US4528550A (en) *	1983-10-31	1985-07-09	Northern Telecom Limited	Method and apparatus for code conversion of binary of multilevel signals

1984
- 1984-11-22 CA CA000468397A patent/CA1232022A/en not_active Expired
- 1984-11-30 DE DE8484114524T patent/DE3483089D1/de not_active Expired - Lifetime
- 1984-11-30 EP EP84114524A patent/EP0144083B1/de not_active Expired
- 1984-11-30 KR KR1019840007560A patent/KR890000573B1/ko not_active Expired
1985
- 1985-01-22 US US06/693,341 patent/US4665532A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
KR890000573B1 (ko)	1989-03-21
KR850005188A (ko)	1985-08-21
CA1232022A (en)	1988-01-26
EP0144083B1 (de)	1990-08-29
US4665532A (en)	1987-05-12
EP0144083A2 (de)	1985-06-12
EP0144083A3 (en)	1987-09-16

Publication	Publication Date	Title
DE3484672D1 (de)	1991-07-11	Mobilfunk-uebertragungssystem.
FI863086A7 (fi)	1987-02-01	Digitalt radiotransmissionssystem.
NL191818C (nl)	1996-08-02	Signaaltransmissiestelsel.
DE3382546D1 (de)	1992-05-27	Kommunikationssystem.
NL193517B (nl)	1999-08-02	Communicatiestelsel.
DE3574808D1 (de)	1990-01-18	Multiplexuebertragungssystem.
DE3482568D1 (de)	1990-07-26	Digitales uebertragungssystem.
NO162838C (no)	1990-02-21	Multippel-aksess kommunikasjons-system.
DE3382220D1 (de)	1991-04-25	Fernsehuebertragungssystem.
DE3381415D1 (de)	1990-05-10	Quergetriebe.
NL192215B (nl)	1996-11-01	Tandwieloverbrengingssysteem.
DE3578593D1 (de)	1990-08-16	Funkuebertragungssystem.
FI842163L (fi)	1984-12-01	Simultant nmr- bildvisningssystem.
FI832573A7 (fi)	1983-07-14	Radioyhteysjärjestelmä.
FI842044L (fi)	1985-01-15	Radiomottagare.
FI840969A7 (fi)	1984-09-15	Televisionssaendningssystem.
DE3381375D1 (de)	1990-04-26	Fernsehuebertragungssystem.
DE3686963D1 (de)	1992-11-19	Funkuebertragungssystem.
DE3485159D1 (de)	1991-11-21	Lageuebermittlungssystem.
IT8420473A0 (it)	1984-04-10	Trasmissione per ruote.
DE3784694D1 (de)	1993-04-15	Funkdatenuebertragungssystem.
DE3483089D1 (de)	1990-10-04	Radiouebertragungssystem.
FI843215A7 (fi)	1985-02-18	Parkeringssystem foer farkoster.
DE3650204D1 (de)	1995-02-23	Funkdaten-übertragungssystem.
FI832580A7 (fi)	1984-01-20	Digitaalinen siirtojärjestelmä.

Legal Events

Date	Code	Title	Description
1991-09-26	8364	No opposition during term of opposition
1992-11-05	8339	Ceased/non-payment of the annual fee