HK41592A - Improvements in data signal encoders and decoders - Google Patents

Improvements in data signal encoders and decoders

Info

Publication number
HK41592A
HK41592A HK41592A HK41592A HK41592A HK 41592 A HK41592 A HK 41592A HK 41592 A HK41592 A HK 41592A HK 41592 A HK41592 A HK 41592A HK 41592 A HK41592 A HK 41592A
Authority
HK
Hong Kong
Prior art keywords
decoders
data signal
signal encoders
encoders
data
Prior art date
Application number
HK41592A
Inventor
G David Forney Jr
Vedat M Eyuboiu
Original Assignee
Codex Corp
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 Codex Corp filed Critical Codex Corp
Publication of HK41592A publication Critical patent/HK41592A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H04L27/3416—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes
    • H04L27/3427—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation
    • H04L27/3438—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation using an underlying generalised cross constellation
    • 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
    • H04L25/497—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 by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems

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)
  • Detection And Prevention Of Errors In Transmission (AREA)
HK41592A 1987-02-24 1992-06-11 Improvements in data signal encoders and decoders HK41592A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1834587A 1987-02-24 1987-02-24

Publications (1)

Publication Number Publication Date
HK41592A true HK41592A (en) 1992-06-19

Family

ID=21787463

Family Applications (1)

Application Number Title Priority Date Filing Date
HK41592A HK41592A (en) 1987-02-24 1992-06-11 Improvements in data signal encoders and decoders

Country Status (9)

Country Link
JP (1) JPH06103895B2 (en)
AU (1) AU621536B2 (en)
CA (1) CA1306543C (en)
DE (1) DE3805582C2 (en)
FR (1) FR2611332B1 (en)
GB (1) GB2201567B (en)
HK (1) HK41592A (en)
NL (1) NL8800474A (en)
SG (1) SG37292G (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2012914C (en) * 1989-05-12 1999-05-04 Vedat M. Eyuboglu Trellis precoding for modulation systems
CA2014867A1 (en) * 1989-05-12 1990-11-12 G. David Forney, Jr. Generalized partial response channel signaling systems
CH685525A5 (en) * 1990-03-12 1995-07-31 Ascom Radiocom Ag Trellis coded modulation of oscillatory carrier wave
US5164963A (en) * 1990-11-07 1992-11-17 At&T Bell Laboratories Coding for digital transmission
DE4201439A1 (en) * 1992-01-21 1993-07-22 Daimler Benz Ag High-rate data transmission procedure via digital radio channel - providing multipath propagation compensation by decision feedback equaliser of correctly phased and weighted antenna signal combination
FR2740286B1 (en) * 1995-10-23 1998-01-02 Inst Eurecom DEVICE AND METHOD FOR HYBRID DIGITAL-ANALOG COMMUNICATION ON A TELEPHONE CHANNEL

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1250924A (en) * 1969-06-25 1971-10-27
CH609510A5 (en) * 1976-06-18 1979-02-28 Ibm
DE2836445C2 (en) * 1978-08-19 1979-11-15 Te Ka De Felten & Guilleaume Fernmeldeanlagen Gmbh, 8500 Nuernberg Circuit arrangement for error detection in digital signals
GB2118006B (en) * 1982-03-19 1985-09-04 Gen Electric Co Plc Transmission systems
DE3574302D1 (en) * 1984-10-02 1989-12-21 Toshiba Kk Optical head apparatus for recording and reproducing data on a recording medium
NL8403366A (en) * 1984-11-06 1986-06-02 Philips Nv DEVICE FOR MONITORING A CMI CODE CONVERTER.
NL8601603A (en) * 1986-06-20 1988-01-18 Philips Nv CHANNEL CODING DEVICE.

Also Published As

Publication number Publication date
NL8800474A (en) 1988-09-16
FR2611332A1 (en) 1988-08-26
SG37292G (en) 1992-05-22
DE3805582A1 (en) 1988-09-01
GB8804283D0 (en) 1988-03-23
GB2201567A (en) 1988-09-01
AU1204088A (en) 1988-09-08
CA1306543C (en) 1992-08-18
JPS63240154A (en) 1988-10-05
FR2611332B1 (en) 1992-09-11
DE3805582C2 (en) 2001-04-12
GB2201567B (en) 1991-09-25
JPH06103895B2 (en) 1994-12-14
AU621536B2 (en) 1992-03-19

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Legal Events

Date Code Title Description
PF Patent in force
AS Change of ownership

Owner name: GENERAL ELECTRIC CAPITAL CORPORATION

Free format text: FORMER OWNER(S): MOTOROLA, INC

Owner name: MOTOROLA, INC.

Free format text: FORMER OWNER(S): CODEX CORPORATION

CHPA Change of a particular in the register (except of change of ownership)
PE Patent expired

Effective date: 20080223