DE3775383D1 - System und verfahren zur datenubertragung. - Google Patents

System und verfahren zur datenubertragung.

Info

Publication number
DE3775383D1
DE3775383D1 DE8787906257T DE3775383T DE3775383D1 DE 3775383 D1 DE3775383 D1 DE 3775383D1 DE 8787906257 T DE8787906257 T DE 8787906257T DE 3775383 T DE3775383 T DE 3775383T DE 3775383 D1 DE3775383 D1 DE 3775383D1
Authority
DE
Germany
Prior art keywords
transmitting data
transmitting
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.)
Expired - Fee Related
Application number
DE8787906257T
Other languages
English (en)
Inventor
Robert Calderbank
Ting-Ann Lee
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co 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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Application granted granted Critical
Publication of DE3775383D1 publication Critical patent/DE3775383D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • H04L25/4919—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 balanced multilevel codes
DE8787906257T 1986-10-02 1987-09-04 System und verfahren zur datenubertragung. Expired - Fee Related DE3775383D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/914,337 US4831635A (en) 1986-10-02 1986-10-02 Trellis codes with spectral nulls
PCT/US1987/002242 WO1988002585A1 (en) 1986-10-02 1987-09-04 Trellis codes with spectral nulls

Publications (1)

Publication Number Publication Date
DE3775383D1 true DE3775383D1 (de) 1992-01-30

Family

ID=25434210

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787906257T Expired - Fee Related DE3775383D1 (de) 1986-10-02 1987-09-04 System und verfahren zur datenubertragung.

Country Status (5)

Country Link
US (1) US4831635A (de)
EP (1) EP0287586B1 (de)
JP (1) JP2589709B2 (de)
DE (1) DE3775383D1 (de)
WO (1) WO1988002585A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901331A (en) * 1989-05-19 1990-02-13 American Telephone And Telegraph Company Trellis codes with passband spectral nulls
US5351249A (en) * 1991-07-19 1994-09-27 Interdigital Technology Corporation Trellis coded FM digital communications system and method
US5216694A (en) * 1991-09-12 1993-06-01 At&T Bell Laboratories Trellis coding for fractional bits
US5450443A (en) * 1993-09-01 1995-09-12 International Business Machines Corporation Method and apparatus for constructing asymptotically optimal second order DC-free channel codes
KR0129577B1 (ko) * 1994-04-30 1998-04-10 배순훈 32-직각진폭변조방식을 이용하는 영상수신시스템에서 개선된 메트릭 계산방법
US5809081A (en) * 1996-05-20 1998-09-15 Mitel Semiconductor Americas Inc. System and method for encoding data such that after precoding the data has a pre-selected parity structure
US5953376A (en) * 1996-09-26 1999-09-14 Lucent Technologies Inc. Probabilistic trellis coded modulation with PCM-derived constellations
EP1129554B1 (de) 1998-11-14 2004-02-04 STMicroelectronics Asia Pacific Pte Ltd. Verfahren zur effizienten durchführung einer treillisbasierten spektralformung mit vorhersage
US7260155B2 (en) * 2001-08-17 2007-08-21 Synopsys, Inc. Method and apparatus for encoding and decoding digital communications data
TWI325725B (en) * 2006-11-17 2010-06-01 Novatek Microelectronics Corp Method for image compression codin

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521274A (en) * 1966-12-29 1970-07-21 Nippon Electric Co Multilevel code signal transmission system
FR2128131B1 (de) * 1971-03-05 1975-02-21 Lignes Telegraph Telephon
CH609510A5 (de) * 1976-06-18 1979-02-28 Ibm
NZ198844A (en) * 1980-11-14 1984-05-31 Plessey Overseas Digital information transmission: two dimensional code
US4457004A (en) * 1982-02-08 1984-06-26 Bell Telephone Laboratories, Incorporated Multidimensional channel coding
US4562426A (en) * 1982-11-08 1985-12-31 Codex Corporation Symbol coding apparatus
US4528550A (en) * 1983-10-31 1985-07-09 Northern Telecom Limited Method and apparatus for code conversion of binary of multilevel signals
US4581601A (en) * 1984-06-25 1986-04-08 At&T Bell Laboratories Multi-dimensional coding for error reduction

Also Published As

Publication number Publication date
US4831635A (en) 1989-05-16
JP2589709B2 (ja) 1997-03-12
WO1988002585A1 (en) 1988-04-07
JPS6395737A (ja) 1988-04-26
EP0287586A1 (de) 1988-10-26
EP0287586B1 (de) 1991-12-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: BLUMBACH, KRAMER & PARTNER, 65193 WIESBADEN

8339 Ceased/non-payment of the annual fee