JPS5481712A - Digital processing type receiver for orthogonal multiplex signal - Google Patents

Digital processing type receiver for orthogonal multiplex signal

Info

Publication number
JPS5481712A
JPS5481712A JP15023877A JP15023877A JPS5481712A JP S5481712 A JPS5481712 A JP S5481712A JP 15023877 A JP15023877 A JP 15023877A JP 15023877 A JP15023877 A JP 15023877A JP S5481712 A JPS5481712 A JP S5481712A
Authority
JP
Japan
Prior art keywords
seconds
sets
per
sample value
parallel
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
JP15023877A
Other languages
Japanese (ja)
Other versions
JPS6154296B2 (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 JP15023877A priority Critical patent/JPS5481712A/en
Publication of JPS5481712A publication Critical patent/JPS5481712A/en
Publication of JPS6154296B2 publication Critical patent/JPS6154296B2/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

Abstract

PURPOSE:To enable demodulation with multiplex QAM signal processing, by using Fouriert conversion technology enabling to reduce the number of multiplication times per unit time. CONSTITUTION:The reception signal is converted into the sample value train per T/M second with the sampler 21, and converted into the parallel sample value train per T seconds of M sets with the multiplex separation circuit 22, and is fed to the polyphase circuits 24 and 26. The circuit 24 outputs the parallel sample value train per T seconds of M sets and the circuit 26 outputs that per T seconds of other M sets, and each parallel output is fed to M sets of input terminals of the offset Fourier conversion unit 30 alternately every T/s seconds with the selector circuit 28, and the parallel complex sample value train per T/2 seconds of M sets is obtained at the output.
JP15023877A 1977-12-13 1977-12-13 Digital processing type receiver for orthogonal multiplex signal Granted JPS5481712A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15023877A JPS5481712A (en) 1977-12-13 1977-12-13 Digital processing type receiver for orthogonal multiplex signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15023877A JPS5481712A (en) 1977-12-13 1977-12-13 Digital processing type receiver for orthogonal multiplex signal

Publications (2)

Publication Number Publication Date
JPS5481712A true JPS5481712A (en) 1979-06-29
JPS6154296B2 JPS6154296B2 (en) 1986-11-21

Family

ID=15492569

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15023877A Granted JPS5481712A (en) 1977-12-13 1977-12-13 Digital processing type receiver for orthogonal multiplex signal

Country Status (1)

Country Link
JP (1) JPS5481712A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56125131A (en) * 1980-03-07 1981-10-01 Nec Corp Digital processing type transceiver for quadrature multiplex signal
JPH02260726A (en) * 1988-12-06 1990-10-23 General Instr Corp Digital sound supply method in fm broadcasting band, its receiver, and audio signal broadcasting device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5437520A (en) * 1977-08-30 1979-03-20 Nec Corp Digital processing type transmitter for quadrature multiple signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5437520A (en) * 1977-08-30 1979-03-20 Nec Corp Digital processing type transmitter for quadrature multiple signal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56125131A (en) * 1980-03-07 1981-10-01 Nec Corp Digital processing type transceiver for quadrature multiplex signal
JPH02260726A (en) * 1988-12-06 1990-10-23 General Instr Corp Digital sound supply method in fm broadcasting band, its receiver, and audio signal broadcasting device

Also Published As

Publication number Publication date
JPS6154296B2 (en) 1986-11-21

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