DE3751039T2 - Modem und verfahren zur verwendung mehrdimensionaler kodierter modulierung. - Google Patents

Modem und verfahren zur verwendung mehrdimensionaler kodierter modulierung.

Info

Publication number
DE3751039T2
DE3751039T2 DE3751039T DE3751039T DE3751039T2 DE 3751039 T2 DE3751039 T2 DE 3751039T2 DE 3751039 T DE3751039 T DE 3751039T DE 3751039 T DE3751039 T DE 3751039T DE 3751039 T2 DE3751039 T2 DE 3751039T2
Authority
DE
Germany
Prior art keywords
modem
coded modulation
dimensional coded
dimensional
modulation
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.)
Expired - Fee Related
Application number
DE3751039T
Other languages
English (en)
Other versions
DE3751039D1 (de
Inventor
Rangarajan Srinivasagopalan
James Pruett
Vedavalli Krishnan
Luis Farias
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.)
Racal Data Communications Inc
Original Assignee
Racal Data Communications Inc
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 Racal Data Communications Inc filed Critical Racal Data Communications Inc
Application granted granted Critical
Publication of DE3751039D1 publication Critical patent/DE3751039D1/de
Publication of DE3751039T2 publication Critical patent/DE3751039T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
DE3751039T 1987-01-15 1987-12-16 Modem und verfahren zur verwendung mehrdimensionaler kodierter modulierung. Expired - Fee Related DE3751039T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/004,389 US4761784A (en) 1987-01-15 1987-01-15 Modem and method using multidimensional coded modulation
PCT/US1987/003356 WO1988005571A1 (en) 1987-01-15 1987-12-16 Modem and method using multidimensional coded modulation

Publications (2)

Publication Number Publication Date
DE3751039D1 DE3751039D1 (de) 1995-03-16
DE3751039T2 true DE3751039T2 (de) 1995-05-24

Family

ID=21710565

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3751039T Expired - Fee Related DE3751039T2 (de) 1987-01-15 1987-12-16 Modem und verfahren zur verwendung mehrdimensionaler kodierter modulierung.

Country Status (6)

Country Link
US (1) US4761784A (de)
EP (1) EP0341256B1 (de)
JP (1) JPH02504690A (de)
CA (1) CA1295741C (de)
DE (1) DE3751039T2 (de)
WO (1) WO1988005571A1 (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2521925B2 (ja) * 1986-10-14 1996-08-07 日本電気株式会社 畳み込み符号器
US4809300A (en) * 1988-04-05 1989-02-28 General Datacomm, Inc. Branch metric algorithm for eight-dimensional signal constellation
DE3910739C3 (de) * 1989-04-03 1996-11-21 Deutsche Forsch Luft Raumfahrt Verfahren zum Verallgemeinern des Viterbi-Algorithmus und Einrichtungen zur Durchführung des Verfahrens
DE68915758T2 (de) * 1989-07-07 1994-12-08 Ibm Blockkodierungsschema für die Übertragung von partiellen Bits.
US5119403A (en) * 1991-04-09 1992-06-02 Racal Data Communications Inc. Superframes
US5185763A (en) * 1991-04-09 1993-02-09 Racal-Datacom, Inc. Data bit to constellation symbol mapper
US5243605A (en) * 1991-07-11 1993-09-07 Storage Technology Corporation Modified viterbi detector with run-length code constraint
US5263052A (en) * 1991-09-30 1993-11-16 Motorola, Inc. Viterbi equalizer for radio receiver
US5754600A (en) * 1994-08-29 1998-05-19 Motorola, Inc. Method and apparatus for optimum soft-decision viterbi decoding of convolutional-differential encoded QPSK data in coherent detection
US5841796A (en) * 1995-03-14 1998-11-24 Comsat Corporation Apparatus and method for calculating viterbi path metric using exponentially-weighted moving average
US5675139A (en) * 1995-05-18 1997-10-07 Symbol Technologies, Inc. Interface arrangement for use with consumer devices
US7254167B2 (en) 1998-10-30 2007-08-07 Broadcom Corporation Constellation-multiplexed transmitter and receiver
US6760385B1 (en) * 2000-05-30 2004-07-06 Adtran, Inc. Universal parallel processing decoder
US6654928B1 (en) * 2000-07-20 2003-11-25 Nokia Mobile Phones Limited Hybrid dimensional, spherical space-time coding and decoding apparatus, and associated method, for a communication system
US7230993B2 (en) * 2002-03-06 2007-06-12 Nokia Corporation Method and apparatus for modulation using an at least four-dimensional signal constellation
US7822150B2 (en) * 2003-03-15 2010-10-26 Alcatel-Lucent Usa Inc. Spherical decoder for wireless communications
US7613260B2 (en) 2005-11-21 2009-11-03 Provigent Ltd Modem control using cross-polarization interference estimation
US7796708B2 (en) * 2006-03-29 2010-09-14 Provigent Ltd. Adaptive receiver loops with weighted decision-directed error
US7643512B2 (en) 2006-06-29 2010-01-05 Provigent Ltd. Cascaded links with adaptive coding and modulation
US7839952B2 (en) * 2006-12-05 2010-11-23 Provigent Ltd Data rate coordination in protected variable-rate links
US7720136B2 (en) 2006-12-26 2010-05-18 Provigent Ltd Adaptive coding and modulation based on link performance prediction
US8315574B2 (en) * 2007-04-13 2012-11-20 Broadcom Corporation Management of variable-rate communication links
US7821938B2 (en) * 2007-04-20 2010-10-26 Provigent Ltd. Adaptive coding and modulation for synchronous connections
US8001445B2 (en) * 2007-08-13 2011-08-16 Provigent Ltd. Protected communication link with improved protection indication
US8040985B2 (en) * 2007-10-09 2011-10-18 Provigent Ltd Decoding of forward error correction codes in the presence of phase noise
GB2474180A (en) * 2008-07-25 2011-04-06 Smith International PDC bit having split blades

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH609510A5 (de) * 1976-06-18 1979-02-28 Ibm
US4457004A (en) * 1982-02-08 1984-06-26 Bell Telephone Laboratories, Incorporated Multidimensional channel coding
US4597090A (en) * 1983-04-14 1986-06-24 Codex Corporation Block coded modulation system
US4700349A (en) * 1984-02-06 1987-10-13 Codex Corporation Coded modulation system
US4581601A (en) * 1984-06-25 1986-04-08 At&T Bell Laboratories Multi-dimensional coding for error reduction
US4709377A (en) * 1985-03-13 1987-11-24 Paradyne Viterbi decoder for wireline modems
US4713817A (en) * 1985-04-25 1987-12-15 Codex Corporation Multidimensional, convolutionally coded communication systems

Also Published As

Publication number Publication date
EP0341256A1 (de) 1989-11-15
WO1988005571A1 (en) 1988-07-28
EP0341256A4 (en) 1991-09-11
EP0341256B1 (de) 1995-02-01
JPH02504690A (ja) 1990-12-27
US4761784A (en) 1988-08-02
DE3751039D1 (de) 1995-03-16
CA1295741C (en) 1992-02-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee