AU4649397A - Device, system and method for spectrally shaping transmitted data signals - Google Patents

Device, system and method for spectrally shaping transmitted data signals

Info

Publication number
AU4649397A
AU4649397A AU46493/97A AU4649397A AU4649397A AU 4649397 A AU4649397 A AU 4649397A AU 46493/97 A AU46493/97 A AU 46493/97A AU 4649397 A AU4649397 A AU 4649397A AU 4649397 A AU4649397 A AU 4649397A
Authority
AU
Australia
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.)
Abandoned
Application number
AU46493/97A
Other languages
English (en)
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.)
Motorola Solutions Inc
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 AU4649397A publication Critical patent/AU4649397A/en
Abandoned 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)
AU46493/97A 1996-09-24 1997-09-19 Device, system and method for spectrally shaping transmitted data signals Abandoned AU4649397A (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US60026688 1996-09-24
US2668896P 1996-09-25 1996-09-25
US73043496A 1996-10-15 1996-10-15
US08730434 1996-10-15
US08747840 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 (fr) 1996-09-25 1997-09-19 Dispositif, systeme et procede pour former le spectre des signaux de donnees emis

Publications (1)

Publication Number Publication Date
AU4649397A true AU4649397A (en) 1998-04-17

Family

ID=27362825

Family Applications (1)

Application Number Title Priority Date Filing Date
AU46493/97A Abandoned AU4649397A (en) 1996-09-24 1997-09-19 Device, system and method for spectrally shaping transmitted data signals

Country Status (5)

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

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

Family Cites Families (3)

* 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
ES2219671T3 (es) * 1994-12-09 2004-12-01 Brent Townshend Sistema de comunicaciones de alta velocidad para conexiones analogicas de abonado.
US5659579A (en) * 1995-02-01 1997-08-19 Lucent Technologies Inc. Multilevel coding for fractional bits

Also Published As

Publication number Publication date
EP0927481A4 (fr) 2003-04-23
CN1231789A (zh) 1999-10-13
WO1998013977A1 (fr) 1998-04-02
EP0927481A1 (fr) 1999-07-07
CA2267362A1 (fr) 1998-04-02

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