IT1070638B - PULSE SPEED SELECTION MODULATOR FOR TELECOMMUNICATION SYSTEMS - Google Patents

PULSE SPEED SELECTION MODULATOR FOR TELECOMMUNICATION SYSTEMS

Info

Publication number
IT1070638B
IT1070638B IT6895276A IT6895276A IT1070638B IT 1070638 B IT1070638 B IT 1070638B IT 6895276 A IT6895276 A IT 6895276A IT 6895276 A IT6895276 A IT 6895276A IT 1070638 B IT1070638 B IT 1070638B
Authority
IT
Italy
Prior art keywords
telecommunication systems
speed selection
pulse speed
modulator
selection modulator
Prior art date
Application number
IT6895276A
Other languages
Italian (it)
Original Assignee
Marconi Co Ltd
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 Marconi Co Ltd filed Critical Marconi Co Ltd
Application granted granted Critical
Publication of IT1070638B publication Critical patent/IT1070638B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • H04L27/2071—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
IT6895276A 1975-08-05 1976-08-04 PULSE SPEED SELECTION MODULATOR FOR TELECOMMUNICATION SYSTEMS IT1070638B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3261275A GB1561643A (en) 1975-08-05 1975-08-05 Phaseshift-keying modulators

Publications (1)

Publication Number Publication Date
IT1070638B true IT1070638B (en) 1985-04-02

Family

ID=10341343

Family Applications (1)

Application Number Title Priority Date Filing Date
IT6895276A IT1070638B (en) 1975-08-05 1976-08-04 PULSE SPEED SELECTION MODULATOR FOR TELECOMMUNICATION SYSTEMS

Country Status (3)

Country Link
FR (1) FR2320666A1 (en)
GB (1) GB1561643A (en)
IT (1) IT1070638B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL294442A (en) * 1963-06-21
FR1381314A (en) * 1963-08-23 1964-12-14 Telecomm Radioelectriques & Te Synchronization methods for transmitting digital signals through non-synchronous transmission devices

Also Published As

Publication number Publication date
DE2548241A1 (en) 1977-02-10
DE2548241B2 (en) 1977-06-02
FR2320666B1 (en) 1981-11-20
GB1561643A (en) 1980-02-27
FR2320666A1 (en) 1977-03-04

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