[go: up one dir, main page]

Jacobsen, 2002 - Google Patents

Methods of upstream power backoff on very high speed digital subscriber lines

Jacobsen, 2002

Document ID
16708037819935404752
Author
Jacobsen K
Publication year
Publication venue
IEEE Communications Magazine

External Links

Snippet

This article describes the near-far problem in the upstream direction of VDSL, which results when the lengths of VDSL loops in a binder vary significantly. Methods of upstream power backoff to mitigate the near-far problem are then described. Simulation results are …
Continue reading at ieeexplore.ieee.org (other versions)

Classifications

    • 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
    • H04L27/2602—Signal structure
    • H04L27/2608—Allocation of payload
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H04L5/0046—Determination of how many bits are transmitted on different sub-channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and telegraphic or other data transmission over the same conductors
    • H04M11/062—Simultaneous speech and telegraphic or other data transmission over the same conductors using different frequency bands for speech and other data
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/32—Reducing cross-talk, e.g. by compensating
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Supervisory, monitoring, management, i.e. operation, administration, maintenance or testing arrangements
    • H04M3/26—Supervisory, monitoring, management, i.e. operation, administration, maintenance or testing arrangements with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/302—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs
    • H04M3/304—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs and using xDSL modems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Supervisory, monitoring, management, i.e. operation, administration, maintenance or testing arrangements
    • H04M3/26—Supervisory, monitoring, management, i.e. operation, administration, maintenance or testing arrangements with means for applying test signals or for measuring
    • H04M3/34—Testing for cross-talk
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate

Similar Documents

Publication Publication Date Title
Jacobsen Methods of upstream power backoff on very high speed digital subscriber lines
US6647058B1 (en) Performance customization system and process for optimizing XDSL performance
US6317495B1 (en) Spectral optimization and joint signaling techniques with multi-line separation for communication in the presence of crosstalk
US6744811B1 (en) Bandwidth management for DSL modem pool
US7551544B2 (en) Power control of digital subscriber line
US7356049B1 (en) Method and apparatus for optimization of channel capacity in multi-line communication systems using spectrum management techniques
WO2009122410A2 (en) Method and apparatus for enhanced performance and crosstalk measurement in a mimo communication system
US7072449B2 (en) System and method for establishing a power level for a communication signal transmitted in a conductor
US7035400B1 (en) Signaling Techniques in channels with asymmetric powers and capacities
EP3373456B1 (en) Method and arrangement in a digital subscriber line system
US7778346B2 (en) Upstream power cutback
KR20010111266A (en) Apparatus and method of tone allocation in digital subscriber line systems
US20020075949A1 (en) Variable bandwidth discrete multi-tone (DMT) rate-adaptive asymmetric digital subscriber line (RADSL) transceiver
JP4304408B2 (en) Improvement of VDSL transmission system or related improvements
EP2169931B1 (en) Method and device for data processing and communication system comprising such device
JP3685756B2 (en) Method for transmitting transmission data using a subscriber modem
US7796685B2 (en) Systems and methods for minimum-power leakage windowing for VDSL using least square technique
US7362798B1 (en) Method for transmitting data to be transmitted using a subscriber modem
EP2146473B1 (en) Method and device for data processing and communication system comprising such device
Jacobsen Providing the right solution for VDSL
Sjoberg et al. Performance evaluation of the Zipper duplex method
Akujuobi et al. A new parallel greedy bit-loading algorithm with fairness for multiple users in a DMT system
Bagheri et al. Iterative multi-user power allocation: Performance evaluation & modification
EP1829269B1 (en) Method and system for virtual exchange reference impact (veri) for use in mixed spectrum management in dsl
Lin et al. On the capacity of twisted-wire pair under AWGN and FEXT noise environment