JPS5437520A - Digital processing type transmitter for quadrature multiple signal - Google Patents

Digital processing type transmitter for quadrature multiple signal

Info

Publication number
JPS5437520A
JPS5437520A JP10460977A JP10460977A JPS5437520A JP S5437520 A JPS5437520 A JP S5437520A JP 10460977 A JP10460977 A JP 10460977A JP 10460977 A JP10460977 A JP 10460977A JP S5437520 A JPS5437520 A JP S5437520A
Authority
JP
Japan
Prior art keywords
digital processing
multiple signal
processing type
quadrature multiple
type transmitter
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
JP10460977A
Other languages
Japanese (ja)
Other versions
JPS6229939B2 (en
Inventor
Botaro Hirosaki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP10460977A priority Critical patent/JPS5437520A/en
Publication of JPS5437520A publication Critical patent/JPS5437520A/en
Publication of JPS6229939B2 publication Critical patent/JPS6229939B2/ja
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)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To convert digitally a plural number of complex base-band signals PAM into quadrature multiple QAM signals by generating quadrature multiple signals QAM through a digital processing, by using a Fourier conversion technique which reduces the number of multiplier circuits for an unit time.
JP10460977A 1977-08-30 1977-08-30 Digital processing type transmitter for quadrature multiple signal Granted JPS5437520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10460977A JPS5437520A (en) 1977-08-30 1977-08-30 Digital processing type transmitter for quadrature multiple signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10460977A JPS5437520A (en) 1977-08-30 1977-08-30 Digital processing type transmitter for quadrature multiple signal

Publications (2)

Publication Number Publication Date
JPS5437520A true JPS5437520A (en) 1979-03-20
JPS6229939B2 JPS6229939B2 (en) 1987-06-29

Family

ID=14385160

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10460977A Granted JPS5437520A (en) 1977-08-30 1977-08-30 Digital processing type transmitter for quadrature multiple signal

Country Status (1)

Country Link
JP (1) JPS5437520A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5481712A (en) * 1977-12-13 1979-06-29 Nec Corp Digital processing type receiver for orthogonal multiplex signal
JPS56125131A (en) * 1980-03-07 1981-10-01 Nec Corp Digital processing type transceiver for quadrature multiplex signal

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6412137A (en) * 1987-07-07 1989-01-17 Isuzu Motors Ltd Clutch control device
JPH0462928U (en) * 1990-10-05 1992-05-28

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5481712A (en) * 1977-12-13 1979-06-29 Nec Corp Digital processing type receiver for orthogonal multiplex signal
JPS6154296B2 (en) * 1977-12-13 1986-11-21 Nippon Electric Co
JPS56125131A (en) * 1980-03-07 1981-10-01 Nec Corp Digital processing type transceiver for quadrature multiplex signal

Also Published As

Publication number Publication date
JPS6229939B2 (en) 1987-06-29

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