GB8804283D0 - Improvements in data signal encoders & decoders - Google Patents

Improvements in data signal encoders & decoders

Info

Publication number
GB8804283D0
GB8804283D0 GB888804283A GB8804283A GB8804283D0 GB 8804283 D0 GB8804283 D0 GB 8804283D0 GB 888804283 A GB888804283 A GB 888804283A GB 8804283 A GB8804283 A GB 8804283A GB 8804283 D0 GB8804283 D0 GB 8804283D0
Authority
GB
United Kingdom
Prior art keywords
decoders
data signal
signal encoders
encoders
data
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
GB888804283A
Other versions
GB2201567A (en
GB2201567B (en
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.)
Motorola Solutions Inc
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 GB8804283D0 publication Critical patent/GB8804283D0/en
Publication of GB2201567A publication Critical patent/GB2201567A/en
Application granted granted Critical
Publication of GB2201567B publication Critical patent/GB2201567B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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)
GB8804283A 1987-02-24 1988-02-24 Improvements in data signal encoders and decoders Expired - Lifetime GB2201567B (en)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
GB8804283D0 true GB8804283D0 (en) 1988-03-23
GB2201567A GB2201567A (en) 1988-09-01
GB2201567B GB2201567B (en) 1991-09-25

Family

ID=21787463

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8804283A Expired - Lifetime GB2201567B (en) 1987-02-24 1988-02-24 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
JPH06103895B2 (en) 1994-12-14
GB2201567A (en) 1988-09-01
AU1204088A (en) 1988-09-08
AU621536B2 (en) 1992-03-19
DE3805582C2 (en) 2001-04-12
HK41592A (en) 1992-06-19
FR2611332A1 (en) 1988-08-26
DE3805582A1 (en) 1988-09-01
FR2611332B1 (en) 1992-09-11
GB2201567B (en) 1991-09-25
CA1306543C (en) 1992-08-18
SG37292G (en) 1992-05-22
JPS63240154A (en) 1988-10-05

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20080223