IE42504L - Carrier regeneration - Google Patents

Carrier regeneration

Info

Publication number
IE42504L
IE42504L IE760475A IE47576A IE42504L IE 42504 L IE42504 L IE 42504L IE 760475 A IE760475 A IE 760475A IE 47576 A IE47576 A IE 47576A IE 42504 L IE42504 L IE 42504L
Authority
IE
Ireland
Prior art keywords
carrier
modulation
frequency
transmission
regenerator
Prior art date
Application number
IE760475A
Other versions
IE42504B1 (en
Original Assignee
Siemens Ag
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 DE19752512350 external-priority patent/DE2512350C3/en
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of IE42504L publication Critical patent/IE42504L/en
Publication of IE42504B1 publication Critical patent/IE42504B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/06—Demodulator circuits; Receiver circuits
    • H04L27/066—Carrier recovery circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Amplitude Modulation (AREA)
  • Detergent Compositions (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Circuits Of Receivers In General (AREA)
  • Transmitters (AREA)

Abstract

The additional transmission of digital signals via transmission paths set up for the transmission of low-frequency and carrier-frequency analog signals is possible provided that the digital signals are shifted to a higher frequency range by modulation with a carrier which has a suitable frequency and phase. One of the sidebands produced during the modulation is adequate for transmission, although this cannot be directly regenerated. The transmitted sideband is therefore first equalised, amplified and then fed to a modulation device (M) and also to an arrangement (TA) for clock and carrier derivation in which both the carrier (C) required for modulation and the clock (L) required for time regeneration are generated. The modulation produces a digital signal which is regenerated in a conventional regenerator (R) for digital signals which contains an amplitude regenerator (AR1) and a time regenerator (ZR). The described method and the arrangement are particularly suitable for use in PCM systems which also use an existing cable installed for carrier-frequency telephony. <IMAGE> [GB1543209A]
IE475/76A 1975-03-20 1976-03-08 Improvements in or relating to the regeneration of carrier transmitted digitals signals IE42504B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752512350 DE2512350C3 (en) 1975-03-20 Method and arrangement for regenerating the sideband used for transmission of a carrier-frequency digital signal

Publications (2)

Publication Number Publication Date
IE42504L true IE42504L (en) 1976-09-20
IE42504B1 IE42504B1 (en) 1980-08-27

Family

ID=5941971

Family Applications (1)

Application Number Title Priority Date Filing Date
IE475/76A IE42504B1 (en) 1975-03-20 1976-03-08 Improvements in or relating to the regeneration of carrier transmitted digitals signals

Country Status (15)

Country Link
JP (1) JPS51118945A (en)
AU (1) AU502624B2 (en)
BE (1) BE839819A (en)
BR (1) BR7601659A (en)
CH (1) CH613825A5 (en)
DK (1) DK122776A (en)
FR (1) FR2305074A1 (en)
GB (1) GB1543209A (en)
IE (1) IE42504B1 (en)
IL (1) IL49179A (en)
IT (1) IT1058478B (en)
LU (1) LU74290A1 (en)
NL (1) NL7602951A (en)
NO (1) NO143555C (en)
SE (1) SE405535B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466146B1 (en) * 1979-09-19 1987-06-12 Cit Alcatel CIRCUIT FOR CONTROLLING THE PHASE OF A LOCAL OSCILLATOR FOR RECEIVING DATA SIGNALS TRANSMITTED BY A MODULATION OF SINGLE BAND AMPLITUDE
ZA82860B (en) * 1981-02-18 1982-12-29 Int Computers Ltd Data transmitting systems
CN110895324A (en) * 2019-11-29 2020-03-20 天津七六四通信导航技术有限公司 Doppler omnidirectional beacon device used in civil aviation equipment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1368068A (en) * 1971-10-20 1974-09-25 Post Office Digital communication systems
DD143698A3 (en) * 1978-06-22 1980-09-10 Willi Hartmann TRANSPORTABLE ROTATING UNIT FOR FLANGE-SEALING LAYERS

Also Published As

Publication number Publication date
LU74290A1 (en) 1976-06-18
IT1058478B (en) 1982-04-10
DE2512350B2 (en) 1977-03-24
SE405535B (en) 1978-12-11
NL7602951A (en) 1976-09-22
NO143555B (en) 1980-11-24
GB1543209A (en) 1979-03-28
FR2305074A1 (en) 1976-10-15
NO143555C (en) 1981-03-04
DE2512350A1 (en) 1976-09-23
FR2305074B1 (en) 1981-05-08
CH613825A5 (en) 1979-10-15
IL49179A0 (en) 1976-05-31
SE7601582L (en) 1976-09-21
IL49179A (en) 1978-06-15
AU502624B2 (en) 1979-08-02
IE42504B1 (en) 1980-08-27
JPS51118945A (en) 1976-10-19
NO760878L (en) 1976-09-21
DK122776A (en) 1976-09-21
BE839819A (en) 1976-07-16
AU1183876A (en) 1977-09-15
BR7601659A (en) 1976-09-21

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