WO2001073954A3 - Asymmetric digital subscriber line methods suitable for long subscriber loops - Google Patents

Asymmetric digital subscriber line methods suitable for long subscriber loops Download PDF

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Publication number
WO2001073954A3
WO2001073954A3 PCT/US2001/010734 US0110734W WO0173954A3 WO 2001073954 A3 WO2001073954 A3 WO 2001073954A3 US 0110734 W US0110734 W US 0110734W WO 0173954 A3 WO0173954 A3 WO 0173954A3
Authority
WO
WIPO (PCT)
Prior art keywords
asymmetric digital
methods suitable
communication
long
transmission medium
Prior art date
Application number
PCT/US2001/010734
Other languages
French (fr)
Other versions
WO2001073954A2 (en
Inventor
Kishan Shenoi
Sandro Squadrito
Gary Bogardus
Original Assignee
Symmetricom Inc
Kishan Shenoi
Sandro Squadrito
Gary Bogardus
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 Symmetricom Inc, Kishan Shenoi, Sandro Squadrito, Gary Bogardus filed Critical Symmetricom Inc
Priority to AU2001249806A priority Critical patent/AU2001249806A1/en
Publication of WO2001073954A2 publication Critical patent/WO2001073954A2/en
Publication of WO2001073954A3 publication Critical patent/WO2001073954A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
    • 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
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/22—Repeaters for converting two wires to four wires; Repeaters for converting single current to double current
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/264—Pulse-shaped multi-carrier, i.e. not using rectangular window
    • H04L27/26416—Filtering per subcarrier, e.g. filterbank multicarrier [FBMC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2649—Demodulators
    • H04L27/2653—Demodulators with direct demodulation of individual subcarriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2649—Demodulators
    • H04L27/26534—Pulse-shaped multi-carrier, i.e. not using rectangular window
    • H04L27/2654—Filtering per subcarrier, e.g. filterbank multicarrier [FBMC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/023—Multiplexing of multicarrier modulation signals

Abstract

Systems, methods and apparatus for asymmetric digital subscriber loops, including a modulator for transmitting a first communication, in a first direction over a transmission medium, the modulator operably coupled to a first amplification interface for providing a first gain adjustment, based on a first attenuation of the first communication in the first direction by a first direction impedance of the transmission medium; and a demodulator operably coupled to the modulator, for receiving a second communication, in a second direction over the transmission medium, the demodulator operably coupled to a second amplification interface for providing a second gain adjustment, based on a second attenuation of the second communication in the second direction by a second direction impedance of the transmission medium.
PCT/US2001/010734 2000-03-29 2001-03-29 Asymmetric digital subscriber line methods suitable for long subscriber loops WO2001073954A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001249806A AU2001249806A1 (en) 2000-03-29 2001-03-29 Asymmetric digital subscriber line methods suitable for long subscriber loops

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US19306100P 2000-03-29 2000-03-29
US60/193,061 2000-03-29
US09/821,841 2001-03-28
US09/821,841 US6507606B2 (en) 2000-03-29 2001-03-28 Asymmetric digital subscriber line methods suitable for long subscriber loops

Publications (2)

Publication Number Publication Date
WO2001073954A2 WO2001073954A2 (en) 2001-10-04
WO2001073954A3 true WO2001073954A3 (en) 2002-01-03

Family

ID=26888643

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/010734 WO2001073954A2 (en) 2000-03-29 2001-03-29 Asymmetric digital subscriber line methods suitable for long subscriber loops

Country Status (3)

Country Link
US (2) US6507606B2 (en)
AU (1) AU2001249806A1 (en)
WO (1) WO2001073954A2 (en)

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Also Published As

Publication number Publication date
AU2001249806A1 (en) 2001-10-08
US6507606B2 (en) 2003-01-14
US7039103B2 (en) 2006-05-02
WO2001073954A2 (en) 2001-10-04
US20030063660A1 (en) 2003-04-03
US20020001340A1 (en) 2002-01-03

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