FR2538642B1 - Systeme de transmission radio-electrique - Google Patents

Systeme de transmission radio-electrique

Info

Publication number
FR2538642B1
FR2538642B1 FR8221744A FR8221744A FR2538642B1 FR 2538642 B1 FR2538642 B1 FR 2538642B1 FR 8221744 A FR8221744 A FR 8221744A FR 8221744 A FR8221744 A FR 8221744A FR 2538642 B1 FR2538642 B1 FR 2538642B1
Authority
FR
France
Prior art keywords
radio
transmission system
electric transmission
electric
transmission
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.)
Expired
Application number
FR8221744A
Other languages
English (en)
Other versions
FR2538642A1 (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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10525122&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FR2538642(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2538642A1 publication Critical patent/FR2538642A1/fr
Application granted granted Critical
Publication of FR2538642B1 publication Critical patent/FR2538642B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/05—Electric or magnetic storage of signals before transmitting or retransmitting for changing the transmission rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/662—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a time/frequency relationship, e.g. time compression or expansion
    • 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
    • H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • H04M1/72502—Cordless telephones with one base station connected to a single line
    • H04M1/72505—Radio link set-up procedures
    • H04M1/72511—Searching for available channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/408—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency the transmitter oscillator frequency being identical to the receiver local oscillator frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
FR8221744A 1981-10-13 1982-12-24 Systeme de transmission radio-electrique Expired FR2538642B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08130812A GB2109197B (en) 1981-10-13 1981-10-13 Radio system

Publications (2)

Publication Number Publication Date
FR2538642A1 FR2538642A1 (fr) 1984-06-29
FR2538642B1 true FR2538642B1 (fr) 1985-10-25

Family

ID=10525122

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8221744A Expired FR2538642B1 (fr) 1981-10-13 1982-12-24 Systeme de transmission radio-electrique

Country Status (7)

Country Link
US (1) US4525835A (fr)
EP (1) EP0077216B1 (fr)
JP (1) JPS5873245A (fr)
AU (1) AU553846B2 (fr)
FR (1) FR2538642B1 (fr)
GB (1) GB2109197B (fr)
NZ (1) NZ202041A (fr)

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US4742514A (en) * 1986-03-25 1988-05-03 Motorola, Inc. Method and apparatus for controlling a TDM communication device
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US4761798A (en) * 1987-04-02 1988-08-02 Itt Aerospace Optical Baseband phase modulator apparatus employing digital techniques
FR2615019B1 (fr) * 1987-05-07 1989-08-04 Sagem Dispositif de liaison d'un microordinateur personnel a une ligne d'un reseau de telecommunications
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US5495508A (en) * 1987-11-20 1996-02-27 Interdigital Technology Corporation Base station emulator
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US5930297A (en) * 1989-11-20 1999-07-27 Interdigital Technology Corporation Base station emulator
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US5075791A (en) * 1990-07-09 1991-12-24 Industrial Technology, Inc. Method and apparatus for achieving two-way long range communication over an optical fiber
EP0540664A4 (en) * 1990-07-23 1993-06-09 Omnipoint Corporation Sawc phase-detection method and apparatus
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US5402413A (en) * 1991-04-08 1995-03-28 Omnipoint Corporation Three-cell wireless communication system
US5887020A (en) * 1991-05-13 1999-03-23 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5796772A (en) * 1991-05-13 1998-08-18 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5790587A (en) * 1991-05-13 1998-08-04 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5815525A (en) * 1991-05-13 1998-09-29 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
JP2846118B2 (ja) * 1991-05-13 1999-01-13 オムニポイント・コーポレイション デュアルモード送信機及び受信機
US5694414A (en) * 1991-05-13 1997-12-02 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5285469A (en) 1991-06-03 1994-02-08 Omnipoint Data Corporation Spread spectrum wireless telephone system
ATE213887T1 (de) * 1991-12-16 2002-03-15 Xircom Wireless Inc Spreizspektrum-datenveröffentlichungssystem
JP2628126B2 (ja) * 1992-03-09 1997-07-09 日立電子株式会社 無線機およびその音声伝送方法
DE9214885U1 (de) * 1992-11-02 1994-03-03 Siemens AG, 80333 München Anordnung zur Steuerung einer Sende-/Empfangseinrichtung von Basisstationen bzw. Mobilteilen eines Schnurlostelefonsystems
US5355389A (en) * 1993-01-13 1994-10-11 Omnipoint Corporation Reciprocal mode saw correlator method and apparatus
JP3358183B2 (ja) * 1993-04-09 2002-12-16 ソニー株式会社 時分割多重送受信装置
US5546383A (en) * 1993-09-30 1996-08-13 Cooley; David M. Modularly clustered radiotelephone system
US6005856A (en) * 1993-11-01 1999-12-21 Omnipoint Corporation Communication protocol for spread spectrum wireless communication system
US6094575A (en) * 1993-11-01 2000-07-25 Omnipoint Corporation Communication system and method
US6088590A (en) * 1993-11-01 2000-07-11 Omnipoint Corporation Method and system for mobile controlled handoff and link maintenance in spread spectrum communication
WO1995012945A1 (fr) * 1993-11-01 1995-05-11 Omnipoint Corporation Desetalement/demodulation de signaux a spectre etale en sequence directe
US5610940A (en) * 1994-09-09 1997-03-11 Omnipoint Corporation Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal
US5754584A (en) * 1994-09-09 1998-05-19 Omnipoint Corporation Non-coherent spread-spectrum continuous-phase modulation communication system
US5757847A (en) * 1994-09-09 1998-05-26 Omnipoint Corporation Method and apparatus for decoding a phase encoded signal
US5648982A (en) * 1994-09-09 1997-07-15 Omnipoint Corporation Spread spectrum transmitter
US5659574A (en) * 1994-09-09 1997-08-19 Omnipoint Corporation Multi-bit correlation of continuous phase modulated signals
US5832028A (en) * 1994-09-09 1998-11-03 Omnipoint Corporation Method and apparatus for coherent serial correlation of a spread spectrum signal
US5881100A (en) * 1994-09-09 1999-03-09 Omnipoint Corporation Method and apparatus for coherent correlation of a spread spectrum signal
US5692007A (en) * 1994-09-09 1997-11-25 Omnipoint Corporation Method and apparatus for differential phase encoding and decoding in spread-spectrum communication systems with continuous-phase modulation
US5963586A (en) * 1994-09-09 1999-10-05 Omnipoint Corporation Method and apparatus for parallel noncoherent correlation of a spread spectrum signal
US5953370A (en) * 1994-09-09 1999-09-14 Omnipoint Corporation Apparatus for receiving and correlating a spread spectrum signal
US5754585A (en) * 1994-09-09 1998-05-19 Omnipoint Corporation Method and apparatus for serial noncoherent correlation of a spread spectrum signal
US5680414A (en) * 1994-09-09 1997-10-21 Omnipoint Corporation Synchronization apparatus and method for spread spectrum receiver
US5856998A (en) * 1994-09-09 1999-01-05 Omnipoint Corporation Method and apparatus for correlating a continuous phase modulated spread spectrum signal
US5629956A (en) * 1994-09-09 1997-05-13 Omnipoint Corporation Method and apparatus for reception and noncoherent serial correlation of a continuous phase modulated signal
US5627856A (en) * 1994-09-09 1997-05-06 Omnipoint Corporation Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators
US5689502A (en) * 1995-06-05 1997-11-18 Omnipoint Corporation Efficient frequency division duplex communication system with interleaved format and timing adjustment control
US5959980A (en) * 1995-06-05 1999-09-28 Omnipoint Corporation Timing adjustment control for efficient time division duplex communication
US6356607B1 (en) 1995-06-05 2002-03-12 Omnipoint Corporation Preamble code structure and detection method and apparatus
US5745484A (en) * 1995-06-05 1998-04-28 Omnipoint Corporation Efficient communication system using time division multiplexing and timing adjustment control
US5802046A (en) * 1995-06-05 1998-09-01 Omnipoint Corporation Efficient time division duplex communication system with interleaved format and timing adjustment control
US6041046A (en) * 1995-07-14 2000-03-21 Omnipoint Corporation Cyclic time hopping in time division multiple access communication system
JPH0993231A (ja) * 1995-09-21 1997-04-04 Fujitsu Ltd 双方向データ伝送方法及び双方向データ伝送システム
US5712848A (en) * 1995-12-11 1998-01-27 Wavtrace, Inc. Time division multiplex communications system including means for reducing undesired echoes resulting from circuit delays
US6141373A (en) * 1996-11-15 2000-10-31 Omnipoint Corporation Preamble code structure and detection method and apparatus
DE19711577A1 (de) * 1997-03-20 1998-10-01 Heinz Brych Drahtlos arbeitende tragbare batteriebetriebene Vorrichtung
US6947469B2 (en) 1999-05-07 2005-09-20 Intel Corporation Method and Apparatus for wireless spread spectrum communication with preamble processing period
CA2281236C (fr) 1999-09-01 2010-02-09 Tajinder Manku Methodes rf de conversion directe au moyen d'un signal virtuel d'oscillateur local
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Also Published As

Publication number Publication date
FR2538642A1 (fr) 1984-06-29
US4525835A (en) 1985-06-25
EP0077216A1 (fr) 1983-04-20
EP0077216B1 (fr) 1986-07-30
GB2109197A (en) 1983-05-25
NZ202041A (en) 1985-07-31
AU553846B2 (en) 1986-07-31
AU8921182A (en) 1983-04-21
JPS5873245A (ja) 1983-05-02
JPH0477492B2 (fr) 1992-12-08
GB2109197B (en) 1985-12-04

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Legal Events

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TP Transmission of property
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TP Transmission of property