AU5407898A - A method for trellis coding a logarithmic distribution of constellation points - Google Patents

A method for trellis coding a logarithmic distribution of constellation points

Info

Publication number
AU5407898A
AU5407898A AU54078/98A AU5407898A AU5407898A AU 5407898 A AU5407898 A AU 5407898A AU 54078/98 A AU54078/98 A AU 54078/98A AU 5407898 A AU5407898 A AU 5407898A AU 5407898 A AU5407898 A AU 5407898A
Authority
AU
Australia
Prior art keywords
constellation points
trellis coding
logarithmic distribution
logarithmic
distribution
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.)
Abandoned
Application number
AU54078/98A
Inventor
Michael Mclaughlin
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.)
Fernway Ltd
Original Assignee
Fernway 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 Fernway Ltd filed Critical Fernway Ltd
Publication of AU5407898A publication Critical patent/AU5407898A/en
Abandoned 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • H04L1/006—Trellis-coded modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
    • H04L25/4927—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes using levels matched to the quantisation levels of the channel
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H04L1/0043—Realisations of complexity reduction techniques, e.g. use of look-up tables

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Error Detection And Correction (AREA)
AU54078/98A 1996-12-04 1997-12-04 A method for trellis coding a logarithmic distribution of constellation points Abandoned AU5407898A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IE960854 1996-12-04
IE960854 1996-12-04
PCT/IE1997/000080 WO1998025384A2 (en) 1996-12-04 1997-12-04 A method for trellis coding a logarithmic distribution of constellation points

Publications (1)

Publication Number Publication Date
AU5407898A true AU5407898A (en) 1998-06-29

Family

ID=11041317

Family Applications (1)

Application Number Title Priority Date Filing Date
AU54078/98A Abandoned AU5407898A (en) 1996-12-04 1997-12-04 A method for trellis coding a logarithmic distribution of constellation points

Country Status (2)

Country Link
AU (1) AU5407898A (en)
WO (1) WO1998025384A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5898098A (en) * 1997-01-17 1998-08-07 Motorola, Inc. System and device for, and method of, communicating according to a composite code
GB2361853A (en) * 2000-04-28 2001-10-31 Mitel Corp Turbo encoding for trellis modulation
US6671327B1 (en) 2000-05-01 2003-12-30 Zarlink Semiconductor Inc. Turbo trellis-coded modulation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5343500A (en) * 1991-09-03 1994-08-30 At&T Bell Laboratories Non-linear encoder and decoder for information transmission through non-linear channels
CA2124376A1 (en) * 1993-07-16 1995-01-17 William Lewis Betts Method and apparatus for encoding data for transfer over a communication channel
US5396519A (en) * 1993-10-22 1995-03-07 At&T Corp. Method and apparatus for adaptively providing precoding and preemphasis conditioning to signal data for transfer over a communication channel
US5710790A (en) * 1995-02-01 1998-01-20 Lucent Technologies Inc. Communication arrangement with improved echo and noise suppression in a channel containing quantization
US5659579A (en) * 1995-02-01 1997-08-19 Lucent Technologies Inc. Multilevel coding for fractional bits

Also Published As

Publication number Publication date
WO1998025384A3 (en) 1998-09-17
WO1998025384A2 (en) 1998-06-11

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