CN1197314C - 脉码调制调制解调器的训练序列的生成 - Google Patents
脉码调制调制解调器的训练序列的生成 Download PDFInfo
- Publication number
- CN1197314C CN1197314C CNB018136761A CN01813676A CN1197314C CN 1197314 C CN1197314 C CN 1197314C CN B018136761 A CNB018136761 A CN B018136761A CN 01813676 A CN01813676 A CN 01813676A CN 1197314 C CN1197314 C CN 1197314C
- Authority
- CN
- China
- Prior art keywords
- hytes
- digital
- feature
- sequence
- ambiguity
- 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
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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
-
- 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)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Error Detection And Correction (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
Abstract
Description
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/632,890 US6785326B1 (en) | 2000-08-07 | 2000-08-07 | Method and apparatus for detecting and compensating digital losses in a communications network |
US09/632,890 | 2000-08-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1446422A CN1446422A (zh) | 2003-10-01 |
CN1197314C true CN1197314C (zh) | 2005-04-13 |
Family
ID=24537382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB018136761A Expired - Fee Related CN1197314C (zh) | 2000-08-07 | 2001-08-01 | 脉码调制调制解调器的训练序列的生成 |
Country Status (7)
Country | Link |
---|---|
US (1) | US6785326B1 (zh) |
EP (1) | EP1310071A2 (zh) |
JP (1) | JP4809571B2 (zh) |
KR (1) | KR100815068B1 (zh) |
CN (1) | CN1197314C (zh) |
AU (1) | AU2001280942A1 (zh) |
WO (1) | WO2002013475A2 (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7031400B2 (en) * | 2001-03-30 | 2006-04-18 | Texas Instruments Incorporated | Method of selecting a PCM modem signal constellation in relation to channel impairments |
CN101686065B (zh) * | 2008-09-24 | 2013-01-30 | 华为技术有限公司 | 调制及解调的方法和设备 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5394437A (en) | 1992-10-20 | 1995-02-28 | At&T Corp. | High-speed modem synchronized to a remote CODEC |
US6480549B1 (en) | 1997-04-08 | 2002-11-12 | Vocal Technologies, Ltd. | Method for determining attenuation in a digital PCM channel |
US5825823A (en) | 1997-06-06 | 1998-10-20 | General Datacomm, Inc. | PCM channel diagnosis |
US6332009B2 (en) * | 1997-09-03 | 2001-12-18 | Conexant Systems, Inc. | Method and apparatus for generating a line impairment learning signal for a data communication system |
DE69811486T2 (de) | 1998-07-30 | 2003-10-02 | Infineon Technologies Ag | Verfahren zur Erzeugung von PCM-Kodesets |
US6052412A (en) | 1998-10-30 | 2000-04-18 | Tyco Electronics Corporation | Codec supporting PCM modem communications over a universal digital loop carrier |
US6178200B1 (en) | 1999-01-28 | 2001-01-23 | Pctel, Inc. | Constellation design for a PCM modem |
US6185249B1 (en) * | 1999-01-28 | 2001-02-06 | Ic Tel Inc. | Translation table design for a PCM modem |
US6512787B1 (en) * | 1999-04-23 | 2003-01-28 | Pc-Tel, Inc. | Digital impairment learning method and system |
US6301296B1 (en) * | 1999-06-24 | 2001-10-09 | Cirrus Logic, Inc. | Digital impairment learning sequence |
JP4183942B2 (ja) * | 1999-07-27 | 2008-11-19 | コネクサント システムズ, インコーポレイテッド | クイック接続パラメータの交信 |
-
2000
- 2000-08-07 US US09/632,890 patent/US6785326B1/en not_active Expired - Lifetime
-
2001
- 2001-08-01 JP JP2002518705A patent/JP4809571B2/ja not_active Expired - Fee Related
- 2001-08-01 AU AU2001280942A patent/AU2001280942A1/en not_active Abandoned
- 2001-08-01 KR KR1020037001805A patent/KR100815068B1/ko not_active IP Right Cessation
- 2001-08-01 EP EP01959378A patent/EP1310071A2/en not_active Withdrawn
- 2001-08-01 CN CNB018136761A patent/CN1197314C/zh not_active Expired - Fee Related
- 2001-08-01 WO PCT/US2001/024064 patent/WO2002013475A2/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
AU2001280942A1 (en) | 2002-02-18 |
WO2002013475A2 (en) | 2002-02-14 |
CN1446422A (zh) | 2003-10-01 |
JP2004520729A (ja) | 2004-07-08 |
WO2002013475A3 (en) | 2002-07-18 |
JP4809571B2 (ja) | 2011-11-09 |
KR20030027012A (ko) | 2003-04-03 |
EP1310071A2 (en) | 2003-05-14 |
US6785326B1 (en) | 2004-08-31 |
KR100815068B1 (ko) | 2008-03-20 |
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Legal Events
Date | Code | Title | Description |
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
ASS | Succession or assignment of patent right |
Owner name: FREEDOM SEMICONDUCTORS CO. Free format text: FORMER OWNER: MOTOROLA, INC. Effective date: 20040806 |
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C41 | Transfer of patent application or patent right or utility model | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20040806 Address after: Texas in the United States Applicant after: FreeScale Semiconductor Address before: Illinois Instrunment Applicant before: Motorola, Inc. |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: FISICAL SEMICONDUCTOR INC. Free format text: FORMER NAME: FREEDOM SEMICONDUCTOR CORP. |
|
CP01 | Change in the name or title of a patent holder |
Address after: Texas in the United States Patentee after: FREESCALE SEMICONDUCTOR, Inc. Address before: Texas in the United States Patentee before: FreeScale Semiconductor |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050413 Termination date: 20150801 |
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EXPY | Termination of patent right or utility model |