EP0927481A4 - Einrichtung, system und verfahren zur formung des spektrums eines übertragenen datensignals - Google Patents

Einrichtung, system und verfahren zur formung des spektrums eines übertragenen datensignals

Info

Publication number
EP0927481A4
EP0927481A4 EP97945245A EP97945245A EP0927481A4 EP 0927481 A4 EP0927481 A4 EP 0927481A4 EP 97945245 A EP97945245 A EP 97945245A EP 97945245 A EP97945245 A EP 97945245A EP 0927481 A4 EP0927481 A4 EP 0927481A4
Authority
EP
European Patent Office
Prior art keywords
data signals
transmitted data
spectrally shaping
shaping transmitted
spectrally
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.)
Withdrawn
Application number
EP97945245A
Other languages
English (en)
French (fr)
Other versions
EP0927481A1 (de
Inventor
M Vedat Eyuboglu
Pierre A Humblet
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.)
General Electric Co
Original Assignee
Motorola 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
Priority claimed from US08/747,840 external-priority patent/US5818879A/en
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of EP0927481A1 publication Critical patent/EP0927481A1/de
Publication of EP0927481A4 publication Critical patent/EP0927481A4/de
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H04L25/4927—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 levels matched to the quantisation levels of the channel

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Small-Scale Networks (AREA)
EP97945245A 1996-09-25 1997-09-19 Einrichtung, system und verfahren zur formung des spektrums eines übertragenen datensignals Withdrawn EP0927481A4 (de)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US2668896P 1996-09-25 1996-09-25
US26688P 1996-09-25
US73043496A 1996-10-15 1996-10-15
US730434 1996-10-15
US747840 1996-11-13
US08/747,840 US5818879A (en) 1996-10-15 1996-11-13 Device, system and method for spectrally shaping transmitted data signals
PCT/US1997/016936 WO1998013977A1 (en) 1996-09-25 1997-09-19 Device, system and method for spectrally shaping transmitted data signals

Publications (2)

Publication Number Publication Date
EP0927481A1 EP0927481A1 (de) 1999-07-07
EP0927481A4 true EP0927481A4 (de) 2003-04-23

Family

ID=27362825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97945245A Withdrawn EP0927481A4 (de) 1996-09-25 1997-09-19 Einrichtung, system und verfahren zur formung des spektrums eines übertragenen datensignals

Country Status (5)

Country Link
EP (1) EP0927481A4 (de)
CN (1) CN1231789A (de)
AU (1) AU4649397A (de)
CA (1) CA2267362A1 (de)
WO (1) WO1998013977A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5926505A (en) * 1996-10-16 1999-07-20 Cirrus Logic, Inc. Device, system, and method for modem communication utilizing two-step mapping
US6480549B1 (en) 1997-04-08 2002-11-12 Vocal Technologies, Ltd. Method for determining attenuation in a digital PCM channel
US6222890B1 (en) * 1997-04-08 2001-04-24 Vocal Technologies, Ltd. Variable spectral shaping method for PCM modems
US6643270B1 (en) 1998-03-03 2003-11-04 Vocal Technologies, Ltd Method of compensating for systemic impairments in a telecommunications network
US6414989B1 (en) * 1999-09-10 2002-07-02 Conexant Systems, Inc. Upstream PCM transmission for a modem system
US6418170B1 (en) * 2000-02-07 2002-07-09 Motorola, Inc. Method and apparatus for achieving 180° phase invariant transmission in a PCM modem system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996018261A2 (en) * 1994-12-09 1996-06-13 Brent Townshend High speed communications system for analog subscriber connections

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5040191A (en) * 1987-02-24 1991-08-13 Codex Corporation Partial response channel signaling systems
US5659579A (en) * 1995-02-01 1997-08-19 Lucent Technologies Inc. Multilevel coding for fractional bits

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996018261A2 (en) * 1994-12-09 1996-06-13 Brent Townshend High speed communications system for analog subscriber connections

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9813977A1 *

Also Published As

Publication number Publication date
CA2267362A1 (en) 1998-04-02
CN1231789A (zh) 1999-10-13
AU4649397A (en) 1998-04-17
WO1998013977A1 (en) 1998-04-02
EP0927481A1 (de) 1999-07-07

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19990426

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB NL SE

A4 Supplementary search report drawn up and despatched

Effective date: 20030306

RIC1 Information provided on ipc code assigned before grant

Ipc: 7H 04L 25/03 B

Ipc: 7H 04L 25/49 B

Ipc: 7H 04L 25/34 A

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GENERAL ELECTRIC CAPITAL CORPORATION

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20060613