FR2253333A2 - Equal side-band system for digital working - Google Patents

Equal side-band system for digital working

Info

Publication number
FR2253333A2
FR2253333A2 FR7342527A FR7342527A FR2253333A2 FR 2253333 A2 FR2253333 A2 FR 2253333A2 FR 7342527 A FR7342527 A FR 7342527A FR 7342527 A FR7342527 A FR 7342527A FR 2253333 A2 FR2253333 A2 FR 2253333A2
Authority
FR
France
Prior art keywords
signals
equal side
outputs
equal
band system
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
FR7342527A
Other languages
French (fr)
Other versions
FR2253333B2 (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.)
Telecommunications Radioelectriques et Telephoniques SA TRT
Original Assignee
Telecommunications Radioelectriques et Telephoniques SA TRT
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
Priority claimed from FR7221646A external-priority patent/FR2188920A5/fr
Application filed by Telecommunications Radioelectriques et Telephoniques SA TRT filed Critical Telecommunications Radioelectriques et Telephoniques SA TRT
Priority to FR7342527A priority Critical patent/FR2253333A2/en
Priority to DE2455754A priority patent/DE2455754C3/en
Priority to SE7414807A priority patent/SE399624B/en
Priority to GB51131/74A priority patent/GB1487216A/en
Priority to BE150924A priority patent/BE822673A/en
Priority to CA214,845A priority patent/CA1025135A/en
Priority to JP13762074A priority patent/JPS5539142B2/ja
Publication of FR2253333A2 publication Critical patent/FR2253333A2/en
Publication of FR2253333B2 publication Critical patent/FR2253333B2/fr
Application granted granted Critical
Granted 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
    • 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)

Abstract

The series-parallel connected converter works in conjunction with equal side band frequency multiplexed signals. The binary coded signals units are transmitted through the multiplexer as equal cyclic signals. Filter coefficients are calculated and the derived outputs are coupled with the inputs of a discrete fourier transformation system. Outputs from the transform are passed on to demodulators. The circuit incorporates recursive digital filters.Phase frequency characteristics are also compared, and submitted to a reference circuit which forms an equivalent to the saw-tooth waveform characteristic
FR7342527A 1972-06-15 1973-11-29 Equal side-band system for digital working Granted FR2253333A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR7342527A FR2253333A2 (en) 1972-06-15 1973-11-29 Equal side-band system for digital working
DE2455754A DE2455754C3 (en) 1973-11-29 1974-11-26 Circuit arrangement for the digital processing of a given number of channel signals
SE7414807A SE399624B (en) 1973-11-29 1974-11-26 TRANSMITTER DEVICE AND RECEIVER DEVICE IN A SYSTEM FOR TRANSMISSION OF A GIVEN NUMBER OF BASE BAND CHANNEL SIGNALS
GB51131/74A GB1487216A (en) 1973-11-29 1974-11-26 Digital signal processor
BE150924A BE822673A (en) 1973-11-29 1974-11-27 SIDE TAPE SYSTEM FOR DIGITAL PROCESSING OF A DATA NUMBER OF CHANNEL SIGNALS
CA214,845A CA1025135A (en) 1973-11-29 1974-11-28 Circuit arrangement for digitally processing a given number of channel signals
JP13762074A JPS5539142B2 (en) 1973-11-29 1974-11-29

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7221646A FR2188920A5 (en) 1972-06-15 1972-06-15
FR7342527A FR2253333A2 (en) 1972-06-15 1973-11-29 Equal side-band system for digital working

Publications (2)

Publication Number Publication Date
FR2253333A2 true FR2253333A2 (en) 1975-06-27
FR2253333B2 FR2253333B2 (en) 1978-11-10

Family

ID=26217164

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7342527A Granted FR2253333A2 (en) 1972-06-15 1973-11-29 Equal side-band system for digital working

Country Status (1)

Country Link
FR (1) FR2253333A2 (en)

Also Published As

Publication number Publication date
FR2253333B2 (en) 1978-11-10

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