GB1437205A - Digital equipment for forming a frequency multiplex system - Google Patents

Digital equipment for forming a frequency multiplex system

Info

Publication number
GB1437205A
GB1437205A GB3175373A GB3175373A GB1437205A GB 1437205 A GB1437205 A GB 1437205A GB 3175373 A GB3175373 A GB 3175373A GB 3175373 A GB3175373 A GB 3175373A GB 1437205 A GB1437205 A GB 1437205A
Authority
GB
United Kingdom
Prior art keywords
signals
multiplied
quadrature
digital
samples
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
GB3175373A
Other languages
English (en)
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
Compagnie Industrielle de Telecommunication CIT Alcatel SA
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 Alcatel CIT SA, Compagnie Industrielle de Telecommunication CIT Alcatel SA filed Critical Alcatel CIT SA
Publication of GB1437205A publication Critical patent/GB1437205A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/04—Frequency-transposition arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/04—Frequency-transposition arrangements
    • H04J1/05—Frequency-transposition arrangements using digital techniques

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Analogue/Digital Conversion (AREA)
  • Time-Division Multiplex Systems (AREA)
GB3175373A 1972-07-03 1973-07-03 Digital equipment for forming a frequency multiplex system Expired GB1437205A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7224032A FR2191826A5 (xx) 1972-07-03 1972-07-03

Publications (1)

Publication Number Publication Date
GB1437205A true GB1437205A (en) 1976-05-26

Family

ID=9101270

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3175373A Expired GB1437205A (en) 1972-07-03 1973-07-03 Digital equipment for forming a frequency multiplex system

Country Status (9)

Country Link
US (1) US3875340A (xx)
BE (1) BE801780A (xx)
DE (1) DE2333870A1 (xx)
FR (1) FR2191826A5 (xx)
GB (1) GB1437205A (xx)
IE (1) IE37872B1 (xx)
IT (1) IT991652B (xx)
LU (1) LU67901A1 (xx)
NL (1) NL7309282A (xx)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4086536A (en) * 1975-06-24 1978-04-25 Honeywell Inc. Single sideband transmitter apparatus
US4001510A (en) * 1975-07-07 1977-01-04 Motorola, Inc. Digital modulator and demodulator system for fdm telephony
US4316282A (en) * 1979-11-23 1982-02-16 Rca Corporation Multichannel frequency translation of sampled waveforms by decimation and interpolation
DE3120445A1 (de) * 1981-05-22 1983-05-26 AEG-Telefunken Nachrichtentechnik GmbH, 7150 Backnang Verfahren zur frequenzvertausch von teilbaendern
JPS6259432A (ja) * 1985-09-10 1987-03-16 Nec Corp Ｆｄｍ／ｔｄｍ相互変換方式
DE3626862A1 (de) * 1986-08-08 1988-02-11 Philips Patentverwaltung Mehrstufige sender- antennenkoppeleinrichtung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676598A (en) * 1970-06-08 1972-07-11 Bell Telephone Labor Inc Frequency division multiplex single-sideband modulation system

Also Published As

Publication number Publication date
NL7309282A (xx) 1974-01-07
FR2191826A5 (xx) 1974-02-01
IE37872L (en) 1974-01-03
LU67901A1 (xx) 1974-01-03
IE37872B1 (en) 1977-11-09
US3875340A (en) 1975-04-01
BE801780A (fr) 1974-01-02
IT991652B (it) 1975-08-30
DE2333870A1 (de) 1974-01-17

Similar Documents

Publication Publication Date Title
EP0084945A3 (en) Direct digital to digital sampling rate conversion method and apparatus
GB1445274A (en) Frequency division multiplex system using comb filters
GB1418384A (en) Transmission system
US4101738A (en) Arrangement for processing auxiliary signals in a frequency multiplex transmission system
GB1287390A (en) Improvements in or relating to digital filters
GB1205598A (en) Frequency-multiplex data transmission
GB1418616A (en) Digital filter
GB1304606A (xx)
GB1322693A (en) Frequency division multiplex singleside band modulation systems
CA1188383A (en) Method for interchanging n partial bands
GB1517675A (en) Communication system
GB1437205A (en) Digital equipment for forming a frequency multiplex system
US3399278A (en) Time division and frequency devision multiplexing system
GB1517172A (en) Telecommunication system
US3908114A (en) Digital Hilbert transformation system
US4510598A (en) Digital transmultiplexer
US4221934A (en) Compandor for group of FDM signals
Tomlinson et al. Techniques for the digital interfacing of TDM-FDM systems
US3689844A (en) Digital filter receiver for frequency-shift data signals
JPS5758429A (en) Multiplex conversion circuit
GB1436878A (en) Pulse density modulation to pcm modulation translation
GB1487216A (en) Digital signal processor
GB1383286A (en) Digital transversal filter
JPS5948577B2 (ja) Ｆｄｍ／ｔｄｍ変換装置
SU809646A1 (ru) Многоканальный демодул тор дискретныхСигНАлОВ

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee