AU633109B2 - Code-word recognition in a tdm communication system - Google Patents

Code-word recognition in a tdm communication system

Info

Publication number
AU633109B2
AU633109B2 AU58011/90A AU5801190A AU633109B2 AU 633109 B2 AU633109 B2 AU 633109B2 AU 58011/90 A AU58011/90 A AU 58011/90A AU 5801190 A AU5801190 A AU 5801190A AU 633109 B2 AU633109 B2 AU 633109B2
Authority
AU
Australia
Prior art keywords
syndrome
bit
code
transmitted
coded
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.)
Ceased
Application number
AU58011/90A
Other versions
AU5801190A (en
Inventor
Bernd X. Weis
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.)
Alcatel Lucent NV
Original Assignee
Alcatel NV
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 Alcatel NV filed Critical Alcatel NV
Publication of AU5801190A publication Critical patent/AU5801190A/en
Application granted granted Critical
Publication of AU633109B2 publication Critical patent/AU633109B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/048—Speed or phase control by synchronisation signals using the properties of error detecting or error correcting codes, e.g. parity as synchronisation signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Error Detection And Correction (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Near-Field Transmission Systems (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

There are time division multiplex information transmission systems in which synchronisation takes place by means of code words transmitted at regular time intervals and coded in a particular code. In systems in which the signals to be transmitted are transmitted in packets of uniform length, the code words in each case contain the information of the so-called header of a packet. The test device according to the invention tests all n-bit bit groups (Xj to Xj+n-1) beginning with an (Xj) of the successive bits of the bit sequence received successively for whether they are coded in the particular code. This is done by calculating the syndrome (S1 to Sn-k) in several parallel networks (N1 to Nn-k), each of which calculates one syndrome component. The bit sequence received is delayed until the networks have calculated the syndrome for a particular n-bit bit group and a syndrome evaluating circuit (LS) indicates, by means of the calculated syndrome, whether the bit group is a code word. <IMAGE>
AU58011/90A 1989-07-08 1990-06-29 Code-word recognition in a tdm communication system Ceased AU633109B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3922486A DE3922486A1 (en) 1989-07-08 1989-07-08 TIME MULTIPLEX MESSAGE TRANSMISSION SYSTEM WITH A RECEIVING-SIDE RECORDING SYSTEM RESPECTING THE CODING OF WORDS INSERTED INTO THE TRANSMITTED MESSAGE
DE3922486 1989-07-08

Publications (2)

Publication Number Publication Date
AU5801190A AU5801190A (en) 1991-01-10
AU633109B2 true AU633109B2 (en) 1993-01-21

Family

ID=6384556

Family Applications (1)

Application Number Title Priority Date Filing Date
AU58011/90A Ceased AU633109B2 (en) 1989-07-08 1990-06-29 Code-word recognition in a tdm communication system

Country Status (10)

Country Link
EP (1) EP0407903B1 (en)
JP (1) JP2555213B2 (en)
KR (1) KR0162647B1 (en)
AT (1) ATE134465T1 (en)
AU (1) AU633109B2 (en)
CA (1) CA2020343C (en)
DE (2) DE3922486A1 (en)
DK (1) DK0407903T3 (en)
ES (1) ES2086333T3 (en)
HU (1) HU208772B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632727A (en) * 1988-10-03 1997-05-27 Atrix Laboratories, Inc. Biodegradable film dressing and method for its formation
US5267249A (en) * 1991-05-09 1993-11-30 Codex Corporation Device and method for asynchronous cyclic redundancy checking for digital receivers
DE19736434C3 (en) 1997-08-21 2002-08-22 Nokia Mobile Phones Ltd Methods and devices for recognizing the position of data packets lying in a serial data reception stream

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269974A2 (en) * 1986-11-28 1988-06-08 International Business Machines Corporation Method and apparatus for detecting a predetermined bit pattern within a serial bit stream

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678469A (en) * 1970-12-01 1972-07-18 Ibm Universal cyclic division circuit
IT1006135B (en) * 1973-12-27 1976-09-30 Sits Soc It Telecom Siemens CIRCUIT ARRANGEMENTS FOR CORRECTION OF THE SLIDING ERROR IN DATA TRANSMISSION SYSTEMS USING CYCLIC CODES
JPS51113506A (en) * 1975-03-31 1976-10-06 Hitachi Ltd Synchronizing equipment for digital code transmission
US4755993A (en) * 1986-07-16 1988-07-05 Northern Telecom Limited Transmission system using forward error correction
DE3707143A1 (en) * 1987-03-06 1988-09-15 Blaupunkt Werke Gmbh DEVICE FOR RECEIVING DATA
DE3735377A1 (en) * 1987-10-19 1989-04-27 Siemens Ag Method for synchronizing a time-division multiplex system for a transmission of packets of uniform length

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269974A2 (en) * 1986-11-28 1988-06-08 International Business Machines Corporation Method and apparatus for detecting a predetermined bit pattern within a serial bit stream

Also Published As

Publication number Publication date
HUT57967A (en) 1991-12-30
CA2020343C (en) 1996-05-21
DE3922486A1 (en) 1991-01-17
AU5801190A (en) 1991-01-10
JPH03139033A (en) 1991-06-13
JP2555213B2 (en) 1996-11-20
HU208772B (en) 1993-12-28
DK0407903T3 (en) 1996-06-10
EP0407903B1 (en) 1996-02-21
HU904068D0 (en) 1990-12-28
ATE134465T1 (en) 1996-03-15
EP0407903A3 (en) 1992-12-02
CA2020343A1 (en) 1991-01-09
DE59010143D1 (en) 1996-03-28
EP0407903A2 (en) 1991-01-16
ES2086333T3 (en) 1996-07-01
KR910003963A (en) 1991-02-28
KR0162647B1 (en) 1998-12-01

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired