JPS55166359A - Detector for modulated data signal - Google Patents

Detector for modulated data signal

Info

Publication number
JPS55166359A
JPS55166359A JP7396579A JP7396579A JPS55166359A JP S55166359 A JPS55166359 A JP S55166359A JP 7396579 A JP7396579 A JP 7396579A JP 7396579 A JP7396579 A JP 7396579A JP S55166359 A JPS55166359 A JP S55166359A
Authority
JP
Japan
Prior art keywords
signal
modulated data
zero
power
decider
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
JP7396579A
Other languages
Japanese (ja)
Other versions
JPS6324335B2 (en
Inventor
Yotaro Hachitsuka
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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Priority to JP7396579A priority Critical patent/JPS55166359A/en
Publication of JPS55166359A publication Critical patent/JPS55166359A/en
Publication of JPS6324335B2 publication Critical patent/JPS6324335B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/206—Arrangements for detecting or preventing errors in the information received using signal quality detector for modulated signals

Abstract

PURPOSE:To secure the detection of the modulated data in a short time after the start of operation and regardless of the modulating system, by using the adaptive filter. CONSTITUTION:Coefficient value range decider 9 decides that the filter coefficient of each step of adaptive filter 16 exists in the specific region determined every step and every unit block which is formed by dividing input signal S every section. Power calculator 10 calculates the power per unit block of signal S to decide whether the power is more than the prescribed level or not. And zero-cross counter 6 counts the zero-cross number with every block formed by dividing signal S every fixed section to decide whether the zero crossing number is within the specific range or not. Then signal S is decided at 13 at the modulated data under the conditions that the unit blocks where the decision outputs of counter 6, calculator 10 and decider 9 each are obtained occupy more than the fixed number among plural number continuous unit blocks.
JP7396579A 1979-06-14 1979-06-14 Detector for modulated data signal Granted JPS55166359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7396579A JPS55166359A (en) 1979-06-14 1979-06-14 Detector for modulated data signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7396579A JPS55166359A (en) 1979-06-14 1979-06-14 Detector for modulated data signal

Publications (2)

Publication Number Publication Date
JPS55166359A true JPS55166359A (en) 1980-12-25
JPS6324335B2 JPS6324335B2 (en) 1988-05-20

Family

ID=13533290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7396579A Granted JPS55166359A (en) 1979-06-14 1979-06-14 Detector for modulated data signal

Country Status (1)

Country Link
JP (1) JPS55166359A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5866424A (en) * 1981-10-16 1983-04-20 Nec Corp Deciding method of received signal
JPS63165937U (en) * 1987-12-29 1988-10-28
JPH03250961A (en) * 1990-02-28 1991-11-08 Mitsubishi Electric Corp Voice/data identification device
JPH04150252A (en) * 1990-10-09 1992-05-22 Mitsubishi Electric Corp Device for identifying voice/data in voice band

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5866424A (en) * 1981-10-16 1983-04-20 Nec Corp Deciding method of received signal
JPH0315383B2 (en) * 1981-10-16 1991-02-28 Nippon Electric Co
JPS63165937U (en) * 1987-12-29 1988-10-28
JPH03250961A (en) * 1990-02-28 1991-11-08 Mitsubishi Electric Corp Voice/data identification device
JPH04150252A (en) * 1990-10-09 1992-05-22 Mitsubishi Electric Corp Device for identifying voice/data in voice band

Also Published As

Publication number Publication date
JPS6324335B2 (en) 1988-05-20

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