DE3689370D1 - Mehrpegel-Modulator mit einer kompakten Einheit zur Erzeugung eines Fehlerkorrekturkodes. - Google Patents

Mehrpegel-Modulator mit einer kompakten Einheit zur Erzeugung eines Fehlerkorrekturkodes.

Info

Publication number
DE3689370D1
DE3689370D1 DE86110147T DE3689370T DE3689370D1 DE 3689370 D1 DE3689370 D1 DE 3689370D1 DE 86110147 T DE86110147 T DE 86110147T DE 3689370 T DE3689370 T DE 3689370T DE 3689370 D1 DE3689370 D1 DE 3689370D1
Authority
DE
Germany
Prior art keywords
generating
error correction
correction code
compact unit
level modulator
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
DE86110147T
Other languages
English (en)
Other versions
DE3689370T2 (de
Inventor
Seiichi C O Nec Corporati Noda
Makoto C O Nec Corpo Yoshimoto
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.)
NEC Corp
Original Assignee
NEC 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
Priority claimed from JP16469585A external-priority patent/JPS6223645A/ja
Priority claimed from JP60184015A external-priority patent/JPH0691562B2/ja
Application filed by NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE3689370D1 publication Critical patent/DE3689370D1/de
Publication of DE3689370T2 publication Critical patent/DE3689370T2/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
    • 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]
    • H03M13/251—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with block coding
    • 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
    • H04L1/0057—Block codes
    • 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
    • H04L27/3411—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set
    • 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
    • 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
DE86110147T 1985-07-24 1986-07-23 Mehrpegel-Modulator mit einer kompakten Einheit zur Erzeugung eines Fehlerkorrekturkodes. Expired - Fee Related DE3689370T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16469585A JPS6223645A (ja) 1985-07-24 1985-07-24 多値変調誤訂正伝送方式
JP60184015A JPH0691562B2 (ja) 1985-08-23 1985-08-23 符号誤り訂正装置

Publications (2)

Publication Number Publication Date
DE3689370D1 true DE3689370D1 (de) 1994-01-20
DE3689370T2 DE3689370T2 (de) 1994-05-11

Family

ID=26489696

Family Applications (1)

Application Number Title Priority Date Filing Date
DE86110147T Expired - Fee Related DE3689370T2 (de) 1985-07-24 1986-07-23 Mehrpegel-Modulator mit einer kompakten Einheit zur Erzeugung eines Fehlerkorrekturkodes.

Country Status (5)

Country Link
US (1) US4716385A (de)
EP (1) EP0209902B1 (de)
AU (1) AU576162B2 (de)
CA (1) CA1257665A (de)
DE (1) DE3689370T2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1257664A (en) * 1985-11-21 1989-07-18 Yasuharu Yoshida MULTILEVEL MODULATOR CAPABLE OF PRODUCING A MULTILEVEL QUADRATURE AMPLITUDE MODULATED SIGNAL HAVING (2.SUP.N .alpha.) OUTPUT SIGNAL POINTS
EP0256076B1 (de) * 1986-01-30 1990-03-28 Plessey Overseas Limited Analog-digitalwandlungsverfahren und gerät dafür
US4855692A (en) * 1988-06-20 1989-08-08 Northern Telecom Limited Method of quadrature-phase amplitude modulation
JPH0771117B2 (ja) * 1988-06-30 1995-07-31 日本電気株式会社 符号誤り訂正装置
US5010554A (en) * 1989-05-12 1991-04-23 At&T Bell Laboratories Error correction method and apparatus
JPH05234279A (ja) * 1992-02-24 1993-09-10 Sony Corp 最尤復号装置及びこれを用いた再生データ復調装置
DE4208090C1 (de) * 1992-03-13 1993-05-13 Ant Nachrichtentechnik Gmbh, 7150 Backnang, De
JP2845705B2 (ja) * 1993-01-14 1999-01-13 日本電気株式会社 多レベル符号化変調通信装置
US5323064A (en) * 1993-04-26 1994-06-21 Raytheon Company Radio frequency signal frequency converter
WO1998039888A2 (en) * 1997-03-05 1998-09-11 Fernway Limited A method and apparatus for shaping the signal spectrum of a transmit signal of a modem
GB0320352D0 (en) 2003-09-01 2003-10-01 Secr Defence Digital modulation waveforms for use in ranging systems
US7562283B2 (en) 2005-12-27 2009-07-14 D.S.P. Group Ltd. Systems and methods for error correction using binary coded hexidecimal or hamming decoding
GB0612142D0 (en) * 2006-06-20 2006-08-02 Secr Defence Spreading modulation spectrum control

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3831145A (en) * 1973-07-20 1974-08-20 Bell Telephone Labor Inc Multilevel data transmission systems
CH609510A5 (de) * 1976-06-18 1979-02-28 Ibm
CA1106067A (en) * 1977-07-19 1981-07-28 Katsuhiro Nakamura Error correction system for differential phase-shift- keying
FR2522909A1 (fr) * 1982-03-02 1983-09-09 Chazenfus Henri Modulateur numerique a plusieurs niveaux d'amplitude avec compensation de composante continue
JPH0642682B2 (ja) * 1982-09-17 1994-06-01 日本電気株式会社 誤り訂正多値符号化復号化装置
JPS6177452A (ja) * 1984-09-25 1986-04-21 Nec Corp 多値直交振幅変調方法および装置

Also Published As

Publication number Publication date
EP0209902A2 (de) 1987-01-28
EP0209902A3 (en) 1989-03-29
US4716385A (en) 1987-12-29
EP0209902B1 (de) 1993-12-08
AU6051586A (en) 1987-01-29
AU576162B2 (en) 1988-08-11
CA1257665A (en) 1989-07-18
DE3689370T2 (de) 1994-05-11

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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