FR2408253A1 - Transmultiplexeur notamment pour communications par satellite - Google Patents

Transmultiplexeur notamment pour communications par satellite

Info

Publication number
FR2408253A1
FR2408253A1 FR7831490A FR7831490A FR2408253A1 FR 2408253 A1 FR2408253 A1 FR 2408253A1 FR 7831490 A FR7831490 A FR 7831490A FR 7831490 A FR7831490 A FR 7831490A FR 2408253 A1 FR2408253 A1 FR 2408253A1
Authority
FR
France
Prior art keywords
rate
fdmtdm
conversion
transmultiplexer
multiplication
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
FR7831490A
Other languages
English (en)
Other versions
FR2408253B1 (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.)
Comsat Corp
Original Assignee
Comsat 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 Comsat Corp filed Critical Comsat Corp
Publication of FR2408253A1 publication Critical patent/FR2408253A1/fr
Application granted granted Critical
Publication of FR2408253B1 publication Critical patent/FR2408253B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J4/00—Combined time-division and frequency-division multiplex systems
    • H04J4/005—Transmultiplexing
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • G06F17/141—Discrete Fourier transforms
    • G06F17/142—Fast Fourier transforms, e.g. using a Cooley-Tukey type algorithm

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Data Mining & Analysis (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Discrete Mathematics (AREA)
  • Algebra (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Television Systems (AREA)
  • Radio Relay Systems (AREA)

Abstract

CE TRANSMULTIPLEXEUR FDMTDM (MULTIPLEXAGE PAR DIVISION DE FREQUENCEMULTIPLEXAGE PAR DIVISION DE TEMPS) MET EN OEUVRE UNE MULTIPLICATION DU TAUX D'ECHANTILLONAGE POUR AUGMENTER CE TAUX EN VUE DE LA CONVERSION TDMFDM ET POUR DIMINUER LE TAUX D'ECHANTILLONNAGE EN VUE DE LA CONVERSION FDMTDM. LES FILTRES DE MULTIPLICATION DE TAUX SONT REALISES DE FACON NUMERIQUE AFIN DE POUVOIR EXPLOITER LES AVANTAGES DU CALCUL PAR DES ALGORITHMES DE TRANSFORMATION DE FOURIER RAPIDE. PAR AILLEURS, LE FILTRAGE DES CANAUX EST MIS EN OEUVRE DANS UN FILTRE RECURRENT NUMERIQUE ELLIPTIQUE DE SIXIEME ORDRE A TEMPS PARTAGE. LE SYSTEME COMPREND UN PROCESSEUR DE TRANSFORMATION RAPIDE DE FOURIER NOUVEAU ET UN NOUVEAU FILTRE RECURRENT.
FR7831490A 1977-11-07 1978-11-07 Transmultiplexeur notamment pour communications par satellite Granted FR2408253A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/849,584 US4199660A (en) 1977-11-07 1977-11-07 FDM/TDM Transmultiplexer

Publications (2)

Publication Number Publication Date
FR2408253A1 true FR2408253A1 (fr) 1979-06-01
FR2408253B1 FR2408253B1 (fr) 1985-03-01

Family

ID=25306057

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7831490A Granted FR2408253A1 (fr) 1977-11-07 1978-11-07 Transmultiplexeur notamment pour communications par satellite

Country Status (7)

Country Link
US (1) US4199660A (fr)
JP (1) JPS54500027A (fr)
CA (1) CA1113618A (fr)
FR (1) FR2408253A1 (fr)
IT (1) IT1108049B (fr)
SE (1) SE431813B (fr)
WO (1) WO1979000271A1 (fr)

Families Citing this family (37)

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Publication number Priority date Publication date Assignee Title
IT1132026B (it) * 1980-07-30 1986-06-25 Telettra Lab Telefon Apparato per multiplazione in frequenza a banda laterale unica e a mezzo di elaborazione numerica
US4412325A (en) * 1981-07-13 1983-10-25 Telettra- Telefonia Elettronica E Radio S.P.A. Equipment for single band multiplexing through digital processing
GB2109962B (en) * 1981-11-24 1985-11-27 Standard Telephones Cables Ltd Discrete fourier transform circuit
BE892241A (fr) * 1982-02-23 1982-06-16 Dev Et D Industrialisation Des Circuit de calcul rapide de la transformee de fourier discrete d'un signal, destine notamment a un appareil de controle par courants de foucault.
US4578790A (en) * 1982-06-23 1986-03-25 Telettra-Telefonia Elettronica E Radio S.P.A. Corso Buenos Aires System and equipment for single side band multiplexing through digital processing
FR2548851B1 (fr) * 1983-07-07 1986-11-14 Electricite De France Procede et installation d'analyse et de restitution de signal a echantillonnage et interpolation
US4612626A (en) * 1983-12-27 1986-09-16 Motorola Inc. Method of performing real input fast fourier transforms simultaneously on two data streams
US4785463A (en) * 1985-09-03 1988-11-15 Motorola, Inc. Digital global positioning system receiver
US4754449A (en) * 1986-07-02 1988-06-28 Hughes Aircraft Company Wide bandwidth device for demodulating frequency division multiplexed signals
US4813035A (en) * 1986-11-04 1989-03-14 Granger Associates Transmultiplexer virtual group distribution frame
US5351234A (en) * 1990-12-28 1994-09-27 Nynex Corporation System for integrated distribution of switched voice and television on coaxial cable
US5325188A (en) * 1992-05-14 1994-06-28 Hitachi America, Ltd. Apparatus for NTSC signal interference cancellation through the use of digital recursive notch filters
US5400084A (en) * 1992-05-14 1995-03-21 Hitachi America, Ltd. Method and apparatus for NTSC signal interference cancellation using recursive digital notch filters
US5325204A (en) * 1992-05-14 1994-06-28 Hitachi America, Ltd. Narrowband interference cancellation through the use of digital recursive notch filters
US5260613A (en) * 1992-06-30 1993-11-09 The United States Of America As Represented By The Secretary Of The Army Real-data FFT buffer
US5590173A (en) * 1992-08-05 1996-12-31 Beasley; Andrew S. Delay insensitive base station-to-handset interface for radio telephone systems
US5625624A (en) * 1993-10-21 1997-04-29 Hughes Aircraft Company High data rate satellite communication system
US5606575A (en) * 1993-10-29 1997-02-25 Airnet Communications Corporation FFT-based channelizer and combiner employing residue-adder-implemented phase advance
US5535240A (en) * 1993-10-29 1996-07-09 Airnet Communications Corporation Transceiver apparatus employing wideband FFT channelizer and inverse FFT combiner for multichannel communication network
GB9414664D0 (en) * 1994-07-20 1994-09-07 British Aerospace Digital signal processing apparatus
JPH09200164A (ja) * 1996-01-19 1997-07-31 Hitachi Denshi Ltd Ｆｄｍａ送受信装置
US6552832B1 (en) 1996-10-07 2003-04-22 Telesector Resources Group, Inc. Telecommunications system including transmultiplexer installed between digital switch and optical signal transmission fiber
US6009084A (en) * 1996-10-07 1999-12-28 Nynex Science & Technology, Inc. Concentrating transmultiplexer for cable telephony
US6108319A (en) * 1996-11-05 2000-08-22 Worldspace International Networks, Inc. Satellite payload processing system providing on-board rate alignment
US6333922B1 (en) * 1996-11-05 2001-12-25 Worldspace, Inc. Satellite payload processing system for switching uplink signals to time division multiplexed downlink signals
US6205133B1 (en) * 1996-11-25 2001-03-20 Ericsson Inc. Flexible wideband architecture for use in radio communications systems
US6198732B1 (en) * 1998-03-13 2001-03-06 Lucent Technologies Inc. Forward-link traffic/paging-channel interleaving for communication systems based on closed-form expressions
US6295287B1 (en) 1998-03-13 2001-09-25 Agere System Guardian Corp. Reverse-link interleaving for communication systems based on closed-form expressions
US6185200B1 (en) 1998-03-13 2001-02-06 Lucent Technologies Inc. Reverse-link de-interleaving for communication systems based on closed-form expressions
US6195344B1 (en) * 1998-03-13 2001-02-27 Lucent Technologies Inc. Forward-link traffic/paging-channel de-interleaving for communication systems based on closed-form expressions
US6198733B1 (en) * 1998-03-13 2001-03-06 Lucent Technologies Inc. Forward-link sync-channel interleaving/de-interleaving for communication systems based on closed-form expressions
US7333422B2 (en) * 2003-09-12 2008-02-19 Zarbana Digital Fund Llc Optimized FFT/IFFT module
US7453949B2 (en) * 2003-12-09 2008-11-18 Agere Systems Inc. MIMO receivers having one or more additional receive paths
US7916144B2 (en) * 2005-07-13 2011-03-29 Siemens Medical Solutions Usa, Inc. High speed image reconstruction for k-space trajectory data using graphic processing unit (GPU)
US10954777B2 (en) * 2016-02-29 2021-03-23 Halliburton Energy Services, Inc. Fixed-wavelength fiber optic telemetry for casing collar locator signals
US10419109B1 (en) * 2018-09-07 2019-09-17 Ciena Corporation Pseudo frequency division multiplexing
CN114253891A (zh) * 2021-12-15 2022-03-29 北京云迹科技股份有限公司 一种配置方法、装置、设备和存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2188920A5 (fr) * 1972-06-15 1974-01-18 Trt Telecom Radio Electr
FR2276745A2 (fr) * 1972-06-15 1976-01-23 Trt Telecom Radio Electr Systeme pour la conversion numerique de signaux de canaux en bande de base en un signal multiplex a repartition en frequence et inversement
US4001510A (en) * 1975-07-07 1977-01-04 Motorola, Inc. Digital modulator and demodulator system for fdm telephony

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2309080A1 (fr) * 1975-04-21 1976-11-19 Kokusai Denshin Denwa Co Ltd Dispositif de multiplexage
FR2315809A1 (fr) * 1975-06-24 1977-01-21 Trt Telecom Radio Electr Systeme de transmission des signaux auxiliaires d'un groupe de voies telephoniques d'un multiplex a repartition en frequence
FR2326818A1 (fr) * 1975-10-02 1977-04-29 Thomson Csf Systeme de transmission telephonique, multiplexeur et demultiplexeur pour la mise en oeuvre d'un tel systeme
US4013842A (en) * 1976-04-15 1977-03-22 Bell Telephone Laboratories, Incorporated Method and apparatus for interfacing digital and analog carrier systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2188920A5 (fr) * 1972-06-15 1974-01-18 Trt Telecom Radio Electr
FR2276745A2 (fr) * 1972-06-15 1976-01-23 Trt Telecom Radio Electr Systeme pour la conversion numerique de signaux de canaux en bande de base en un signal multiplex a repartition en frequence et inversement
US4001510A (en) * 1975-07-07 1977-01-04 Motorola, Inc. Digital modulator and demodulator system for fdm telephony

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EXBK/74 *
EXBK/76 *

Also Published As

Publication number Publication date
JPS54500027A (fr) 1979-09-13
CA1113618A (fr) 1981-12-01
IT1108049B (it) 1985-12-02
IT7869544A0 (it) 1978-11-07
SE7903765L (sv) 1979-05-08
US4199660A (en) 1980-04-22
FR2408253B1 (fr) 1985-03-01
WO1979000271A1 (fr) 1979-05-17
SE431813B (sv) 1984-02-27

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Legal Events

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