JPS6346619B2 - - Google Patents

Info

Publication number
JPS6346619B2
JPS6346619B2 JP1936479A JP1936479A JPS6346619B2 JP S6346619 B2 JPS6346619 B2 JP S6346619B2 JP 1936479 A JP1936479 A JP 1936479A JP 1936479 A JP1936479 A JP 1936479A JP S6346619 B2 JPS6346619 B2 JP S6346619B2
Authority
JP
Japan
Prior art keywords
complex
fourier inverse
signal
outputs
circuit
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
JP1936479A
Other languages
English (en)
Japanese (ja)
Other versions
JPS55112054A (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
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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP1936479A priority Critical patent/JPS55112054A/ja
Priority to US06/121,943 priority patent/US4300229A/en
Priority to AU55634/80A priority patent/AU527333B2/en
Priority to CA000346089A priority patent/CA1134519A/en
Publication of JPS55112054A publication Critical patent/JPS55112054A/ja
Publication of JPS6346619B2 publication Critical patent/JPS6346619B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2628—Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/264—Pulse-shaped multi-carrier, i.e. not using rectangular window
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2649—Demodulators
    • H04L27/26534—Pulse-shaped multi-carrier, i.e. not using rectangular window

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
JP1936479A 1979-02-21 1979-02-21 Digital process type transmitter for orthogonal multiple signal Granted JPS55112054A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1936479A JPS55112054A (en) 1979-02-21 1979-02-21 Digital process type transmitter for orthogonal multiple signal
US06/121,943 US4300229A (en) 1979-02-21 1980-02-15 Transmitter and receiver for an othogonally multiplexed QAM signal of a sampling rate N times that of PAM signals, comprising an N/2-point offset fourier transform processor
AU55634/80A AU527333B2 (en) 1979-02-21 1980-02-18 Multi pam signals to ortho multiplex qam converter
CA000346089A CA1134519A (en) 1979-02-21 1980-02-20 Transmitter and receiver for an orthogonally multiplexed qam signal of a sampling rate n times that of pam signals, comprising an n/2-point offset fourier transform processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1936479A JPS55112054A (en) 1979-02-21 1979-02-21 Digital process type transmitter for orthogonal multiple signal

Publications (2)

Publication Number Publication Date
JPS55112054A JPS55112054A (en) 1980-08-29
JPS6346619B2 true JPS6346619B2 (zh) 1988-09-16

Family

ID=11997294

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1936479A Granted JPS55112054A (en) 1979-02-21 1979-02-21 Digital process type transmitter for orthogonal multiple signal

Country Status (1)

Country Link
JP (1) JPS55112054A (zh)

Also Published As

Publication number Publication date
JPS55112054A (en) 1980-08-29

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