JP2000354078A - 上りへの高速モデム通信 - Google Patents

上りへの高速モデム通信

Info

Publication number
JP2000354078A
JP2000354078A JP2000130861A JP2000130861A JP2000354078A JP 2000354078 A JP2000354078 A JP 2000354078A JP 2000130861 A JP2000130861 A JP 2000130861A JP 2000130861 A JP2000130861 A JP 2000130861A JP 2000354078 A JP2000354078 A JP 2000354078A
Authority
JP
Japan
Prior art keywords
digital
modem
analog
signal
function
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
JP2000130861A
Other languages
English (en)
Japanese (ja)
Inventor
Nirmal C Warke
シー、ワルケ ニルマル
Ali Murutaza
アリ ムルタザ
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments 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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of JP2000354078A publication Critical patent/JP2000354078A/ja
Pending 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
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03343—Arrangements at the transmitter end
    • 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
JP2000130861A 1999-04-29 2000-04-28 上りへの高速モデム通信 Pending JP2000354078A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US301712 1981-09-14
US09/301,712 US6516025B1 (en) 1999-04-29 1999-04-29 High-speed upstream modem communication

Publications (1)

Publication Number Publication Date
JP2000354078A true JP2000354078A (ja) 2000-12-19

Family

ID=23164548

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000130861A Pending JP2000354078A (ja) 1999-04-29 2000-04-28 上りへの高速モデム通信

Country Status (6)

Country Link
US (1) US6516025B1 (US06516025-20030204-M00003.png)
EP (1) EP1049300B1 (US06516025-20030204-M00003.png)
JP (1) JP2000354078A (US06516025-20030204-M00003.png)
CN (1) CN1150729C (US06516025-20030204-M00003.png)
DE (1) DE60042769D1 (US06516025-20030204-M00003.png)
TW (1) TW476206B (US06516025-20030204-M00003.png)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7020189B2 (en) * 1999-02-22 2006-03-28 Godigital Networks Corporation Method and apparatus for implementing digital filters in the data path of a PCM modem for efficient transition of a second analog-to-digital conversion process
US6414989B1 (en) 1999-09-10 2002-07-02 Conexant Systems, Inc. Upstream PCM transmission for a modem system
US6823023B1 (en) * 2000-01-31 2004-11-23 Intel Corporation Serial bus communication system
WO2002019541A2 (de) * 2000-08-28 2002-03-07 Siemens Aktiengesellschaft Verfahren sowie vorrichtung zur vorentzerrung von funkkanälen
DE10042203A1 (de) * 2000-08-28 2002-03-14 Siemens Ag Verfahren sowie Vorrichtung zur Vorentzerrung von Funkkanälen
US6914933B1 (en) * 2000-09-08 2005-07-05 Broadcom Corporation Method and apparatus to identify a remote communication apparatus and enhance communication performance based on the identification
US7349489B2 (en) * 2001-08-13 2008-03-25 Nokia Siemens Networks Gmbh & Co. Kg Pulse shaping filter with minimal intersymbol interference
AU2002217194A1 (en) * 2001-12-13 2003-06-23 Vdsl Systems Oy Equalization filter for digital subscriber wide bandwidth reception
DE10214908A1 (de) * 2002-04-04 2003-11-13 Infineon Technologies Ag Einrichtung und Verfahren zur geregelten Skalierung und Quantisierung von Soft-Output-Werten eines Entzerrers
US7362803B2 (en) * 2004-07-30 2008-04-22 Motorola, Inc. Method and system for interactive channel equalization
US7583725B1 (en) * 2005-06-22 2009-09-01 Xilinx, Inc. Dynamically reconfigurable adaptive communication device and system
EP1748357A1 (en) * 2005-07-27 2007-01-31 Agilent Technologies, Inc. Noise signal generation by mapping random words
US9025490B2 (en) * 2011-01-17 2015-05-05 Shahram Davari Network device
US8548097B1 (en) 2012-06-20 2013-10-01 MagnaCom Ltd. Coarse phase estimation for highly-spectrally-efficient communications
CN104769875B (zh) 2012-06-20 2018-07-06 安华高科技通用Ip(新加坡)公司 采用正交频分复用的高频谱效率传输
US9118519B2 (en) 2013-11-01 2015-08-25 MagnaCom Ltd. Reception of inter-symbol-correlated signals using symbol-by-symbol soft-output demodulator
US9130637B2 (en) 2014-01-21 2015-09-08 MagnaCom Ltd. Communication methods and systems for nonlinear multi-user environments
US9496900B2 (en) 2014-05-06 2016-11-15 MagnaCom Ltd. Signal acquisition in a multimode environment
US8891701B1 (en) 2014-06-06 2014-11-18 MagnaCom Ltd. Nonlinearity compensation for reception of OFDM signals
US9246523B1 (en) 2014-08-27 2016-01-26 MagnaCom Ltd. Transmitter signal shaping
US9191247B1 (en) 2014-12-09 2015-11-17 MagnaCom Ltd. High-performance sequence estimation system and method of operation
GB2541260B (en) 2015-04-29 2020-02-19 Carrier Corp System and method of data communication that compensates for wire characteristics
US10148363B2 (en) 2015-12-08 2018-12-04 Zte Corporation Iterative nonlinear compensation
US10148465B2 (en) * 2015-12-08 2018-12-04 Zte Corporation Training assisted joint equalization

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5528625A (en) * 1994-01-03 1996-06-18 At&T Corp. High speed quantization-level-sampling modem with equalization arrangement
US5710790A (en) * 1995-02-01 1998-01-20 Lucent Technologies Inc. Communication arrangement with improved echo and noise suppression in a channel containing quantization
US6198776B1 (en) * 1996-11-13 2001-03-06 Motorola Inc. Device and method for precoding data signals for PCM transmission
US6081555A (en) * 1996-12-04 2000-06-27 Conexant Systems, Inc. Methods and apparatus for implementing shell mapping techniques in the context of a PCM-based modem communications system
US5887027A (en) * 1997-12-24 1999-03-23 Lucent Technologies Inc. Method of upstream channel modeling for PCM modem
US6181752B1 (en) * 1997-12-29 2001-01-30 Motorola Inc. Device and method for detecting PCM upstream digital impairments in a communication network
EP1038379B1 (en) * 1997-12-29 2008-07-30 Motorola, Inc. Method and apparatus of selecting a constellation point, for each group of data bits to be transmitted by an analog pcm modem
US6151364A (en) * 1998-10-30 2000-11-21 Raychem Corporation Codec supporting PCM modem communications over a universal digital loop carrier

Also Published As

Publication number Publication date
TW476206B (en) 2002-02-11
CN1272727A (zh) 2000-11-08
EP1049300A3 (en) 2003-10-22
US6516025B1 (en) 2003-02-04
DE60042769D1 (de) 2009-10-01
EP1049300B1 (en) 2009-08-19
CN1150729C (zh) 2004-05-19
EP1049300A2 (en) 2000-11-02

Similar Documents

Publication Publication Date Title
JP2000354078A (ja) 上りへの高速モデム通信
JP4307420B2 (ja) アナログ加入者接続用高速通信システム
EP0930750B1 (en) Method of upstream channel modeling for PCM modem
US6505222B1 (en) Systems methods and computer program products for controlling undesirable bias in an equalizer
JP4160097B2 (ja) アナログ加入者接続のための高速通信システム
JP2001332999A (ja) 適応等化器のトレーニング回路及びモデム装置並びに通信装置
JP2002500471A (ja) Ｐｃｍ伝送のためのデータ信号をプリコードするための装置および方法
US6201842B1 (en) Device and method for detecting PCM upstream digital impairments in a communication network
US20040213362A1 (en) High speed decoding apparatus and method for analog subscriber connections
US6134265A (en) Precoding coefficient training in a V.34 modem
EP0718821A2 (en) Linear prediction filter coefficient quantizer and filter set
Mueller et al. A hardware efficient passband equalizer structure for data transmission
US6707868B1 (en) Apparatus for recovering timing of a digital signal for a transceiver
US6792040B1 (en) Modems having a dual power mode capability and methods of operating same
AU1586899A (en) System, device and method for pcm upstream transmission utilizing an optimized transmit constellation
US5365545A (en) MODEM-channel bank converter
US6233275B1 (en) High speed communications system for analog subscriber connections
US6781965B1 (en) Method and apparatus for echo cancellation updates in a multicarrier transceiver system
KR100349987B1 (ko) 고속 모뎀에 대한 트레이닝 방법
uner Arslan Equalization for Discrete Multitone Transceivers
Essig et al. An HDSL chipset for high-speed transmission over copper
Al-Rawi et al. Comparison between Two Algorithms of 32kb/s ADPCM using QAM Signal at 16.8 kb/s
AU4811001A (en) Methods for conveying information utilizing PCM codewords