WO2002017584A3 - Bit swapping and dynamic rate adjustment for multicarrier transmission in a digital subscriber line system - Google Patents

Bit swapping and dynamic rate adjustment for multicarrier transmission in a digital subscriber line system Download PDF

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Publication number
WO2002017584A3
WO2002017584A3 PCT/US2001/026303 US0126303W WO0217584A3 WO 2002017584 A3 WO2002017584 A3 WO 2002017584A3 US 0126303 W US0126303 W US 0126303W WO 0217584 A3 WO0217584 A3 WO 0217584A3
Authority
WO
WIPO (PCT)
Prior art keywords
rate adjustment
dynamic rate
subscriber line
digital subscriber
bit swapping
Prior art date
Application number
PCT/US2001/026303
Other languages
French (fr)
Other versions
WO2002017584A2 (en
Inventor
Navid Lashkarian
Guozhu Long
Original Assignee
Centillium Communications 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 Centillium Communications Inc filed Critical Centillium Communications Inc
Priority to AU2001286652A priority Critical patent/AU2001286652A1/en
Publication of WO2002017584A2 publication Critical patent/WO2002017584A2/en
Publication of WO2002017584A3 publication Critical patent/WO2002017584A3/en

Links

Classifications

    • 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
    • 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
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • 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
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • 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
    • 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
    • H04L5/1438—Negotiation of transmission parameters prior to communication

Abstract

Bit swapping and dynamic rate adjustment in a multicarrier transmission system, such as a digital subscriber line (DSL) system using discrete multitone (DMT) transmission, are described that take the non-uniform variation of signal-to-noise ratios for various constellation sizes into account. The bits are distributed such that a probability of error is uniformly distributed among sub-channels, thus maintaining a bit error rate. Furthermore, the transmit scaling factors at the transmitter are optimized to provide more precise compensation of sub-channel variation. In addition, the bit swapping and dynamic rate adjustment techniques take into account maximum and minimum bits per sub-channel requirements.
PCT/US2001/026303 2000-08-24 2001-08-23 Bit swapping and dynamic rate adjustment for multicarrier transmission in a digital subscriber line system WO2002017584A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001286652A AU2001286652A1 (en) 2000-08-24 2001-08-23 Bit swapping and dynamic rate adjustment for multicarrier transmission in a digital subscriber line system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64828500A 2000-08-24 2000-08-24
US09/648,285 2000-08-24

Publications (2)

Publication Number Publication Date
WO2002017584A2 WO2002017584A2 (en) 2002-02-28
WO2002017584A3 true WO2002017584A3 (en) 2002-08-29

Family

ID=24600184

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/026303 WO2002017584A2 (en) 2000-08-24 2001-08-23 Bit swapping and dynamic rate adjustment for multicarrier transmission in a digital subscriber line system

Country Status (2)

Country Link
AU (1) AU2001286652A1 (en)
WO (1) WO2002017584A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE411697T1 (en) * 2004-08-06 2008-10-15 Alcatel Lucent QUALITY CONTROL OF A DATA FLOW IN A DSL SYSTEM
EP1670201A1 (en) * 2004-12-10 2006-06-14 STMicroelectronics S.r.l. Bit Swap algorithm to improve modem performance
KR102199521B1 (en) 2013-06-18 2021-01-08 스키피오 테크놀로지스 에스.아이 리미티드 Robust on-line reconfiguration (olr) and synchronization protocol for digital subscriber line (dsl)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5400322A (en) * 1993-08-20 1995-03-21 Amati Communications Corp. Updating of bit allocations in a multicarrier modulation transmission system
US5479447A (en) * 1993-05-03 1995-12-26 The Board Of Trustees Of The Leland Stanford, Junior University Method and apparatus for adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines
US5521906A (en) * 1995-01-26 1996-05-28 Motorola Inc. Method and apparatus for updating carrier channel allocations
FR2736229A1 (en) * 1995-06-30 1997-01-03 Samsung Electronics Co Ltd ADAPTIVE BITCH EXCHANGE METHOD AND DEVICE FOR DISCREET MULTI-TONE SYSTEM
EP0918422A2 (en) * 1997-11-24 1999-05-26 Motorola, Inc. Method for reallocating data in a discrete multi-tone communication system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5479447A (en) * 1993-05-03 1995-12-26 The Board Of Trustees Of The Leland Stanford, Junior University Method and apparatus for adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines
US5400322A (en) * 1993-08-20 1995-03-21 Amati Communications Corp. Updating of bit allocations in a multicarrier modulation transmission system
US5521906A (en) * 1995-01-26 1996-05-28 Motorola Inc. Method and apparatus for updating carrier channel allocations
FR2736229A1 (en) * 1995-06-30 1997-01-03 Samsung Electronics Co Ltd ADAPTIVE BITCH EXCHANGE METHOD AND DEVICE FOR DISCREET MULTI-TONE SYSTEM
EP0918422A2 (en) * 1997-11-24 1999-05-26 Motorola, Inc. Method for reallocating data in a discrete multi-tone communication system

Also Published As

Publication number Publication date
AU2001286652A1 (en) 2002-03-04
WO2002017584A2 (en) 2002-02-28

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