CN1231789A - 在频谱上形成被发送的诸数据信号的装置、系统和方法 - Google Patents

在频谱上形成被发送的诸数据信号的装置、系统和方法 Download PDF

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Publication number
CN1231789A
CN1231789A CN 97198256 CN97198256A CN1231789A CN 1231789 A CN1231789 A CN 1231789A CN 97198256 CN97198256 CN 97198256 CN 97198256 A CN97198256 A CN 97198256A CN 1231789 A CN1231789 A CN 1231789A
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CN
China
Prior art keywords
level
sent
group
digital network
equivalence class
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.)
Pending
Application number
CN 97198256
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English (en)
Chinese (zh)
Inventor
M·维戴特·艾博格鲁
皮埃尔·A·亨布里特
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
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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 CN1231789A publication Critical patent/CN1231789A/zh
Pending legal-status Critical Current

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    • 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

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  • 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)
CN 97198256 1996-09-25 1997-09-19 在频谱上形成被发送的诸数据信号的装置、系统和方法 Pending CN1231789A (zh)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US2668896P 1996-09-25 1996-09-25
US60/026,688 1996-09-25
US73043496A 1996-10-15 1996-10-15
US08/730,434 1996-10-15
US08/747,840 1996-11-13
US08/747,840 US5818879A (en) 1996-10-15 1996-11-13 Device, system and method for spectrally shaping transmitted data signals

Publications (1)

Publication Number Publication Date
CN1231789A true CN1231789A (zh) 1999-10-13

Family

ID=27362825

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 97198256 Pending CN1231789A (zh) 1996-09-25 1997-09-19 在频谱上形成被发送的诸数据信号的装置、系统和方法

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1652486B (zh) * 2000-02-07 2011-05-18 通用电气资本公司 防止和克服通信信道中相位反转的影响的方法

Families Citing this family (5)

* 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
US6222890B1 (en) * 1997-04-08 2001-04-24 Vocal Technologies, Ltd. Variable spectral shaping method for PCM modems
US6480549B1 (en) 1997-04-08 2002-11-12 Vocal Technologies, Ltd. Method for determining attenuation in a digital PCM channel
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

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
DE69532919T2 (de) * 1994-12-09 2005-04-14 Townshend, Brent, Menlo Park Schnelles vermittlungssystem für analoge teilnehmeranschlüsse
US5659579A (en) * 1995-02-01 1997-08-19 Lucent Technologies Inc. Multilevel coding for fractional bits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1652486B (zh) * 2000-02-07 2011-05-18 通用电气资本公司 防止和克服通信信道中相位反转的影响的方法

Also Published As

Publication number Publication date
EP0927481A4 (fr) 2003-04-23
CA2267362A1 (fr) 1998-04-02
EP0927481A1 (fr) 1999-07-07
WO1998013977A1 (fr) 1998-04-02
AU4649397A (en) 1998-04-17

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