WO2000031939A3 - Method for determining frequency sub-band division in modems based on multicarrier modulation technique and system utilizing the method - Google Patents

Method for determining frequency sub-band division in modems based on multicarrier modulation technique and system utilizing the method Download PDF

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Publication number
WO2000031939A3
WO2000031939A3 PCT/FI1999/000963 FI9900963W WO0031939A3 WO 2000031939 A3 WO2000031939 A3 WO 2000031939A3 FI 9900963 W FI9900963 W FI 9900963W WO 0031939 A3 WO0031939 A3 WO 0031939A3
Authority
WO
WIPO (PCT)
Prior art keywords
subchannels
bandwidth
modulation technique
multicarrier modulation
frequency sub
Prior art date
Application number
PCT/FI1999/000963
Other languages
French (fr)
Other versions
WO2000031939A2 (en
Inventor
Heikki Laamanen
Janne Vaeaenaenen
Original Assignee
Tellabs Oy
Heikki Laamanen
Janne Vaeaenaenen
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 Tellabs Oy, Heikki Laamanen, Janne Vaeaenaenen filed Critical Tellabs Oy
Priority to AU15619/00A priority Critical patent/AU1561900A/en
Publication of WO2000031939A2 publication Critical patent/WO2000031939A2/en
Publication of WO2000031939A3 publication Critical patent/WO2000031939A3/en

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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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload

Abstract

The present invention concerns a method and system for dividing the transmission bandwidth into data-transferring subchannels of desired bandwidths and carrier locations in modems based on multicarrier modulation technique, in which method the transmission bandwidth is divided into at least three subchannels (2) when both transmission directions are taken into account. According to the invention, the bandwidth of said subchannels (2) at frequency ranges (5) affected at the highest probability by RF interference emissions at frequencies (4) not known a priori is set narrower than the bandwidth of other subchannels (2) and the number of said narrower-bandwidth subchannels is not set smaller than two when both transmission directions are taken into account.
PCT/FI1999/000963 1998-11-19 1999-11-19 Method for determining frequency sub-band division in modems based on multicarrier modulation technique and system utilizing the method WO2000031939A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU15619/00A AU1561900A (en) 1998-11-19 1999-11-19 Method for determining frequency sub-band division in modems based on multicarrier modulation technique and system utilizing the method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI982509 1998-11-19
FI982509A FI105973B (en) 1998-11-19 1998-11-19 A method for determining the frequency bandwidth of modems employing a multicarrier system and a system employing the method

Publications (2)

Publication Number Publication Date
WO2000031939A2 WO2000031939A2 (en) 2000-06-02
WO2000031939A3 true WO2000031939A3 (en) 2000-10-05

Family

ID=8552945

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1999/000963 WO2000031939A2 (en) 1998-11-19 1999-11-19 Method for determining frequency sub-band division in modems based on multicarrier modulation technique and system utilizing the method

Country Status (3)

Country Link
AU (1) AU1561900A (en)
FI (1) FI105973B (en)
WO (1) WO2000031939A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6885699B2 (en) 2000-07-24 2005-04-26 Stmicroelectronics Ltd. Semi-stationary quiescent mode transmission
DE10112803A1 (en) * 2001-03-16 2002-10-02 Siemens Ag Process for improving the transmission quality between telecommunication devices
FR2848751B1 (en) * 2002-12-17 2005-03-11 Thales Sa METHOD FOR MODULATING AND DEMODULATING A DIGITAL SIGNAL, IN PARTICULAR IN A FREQUENCY BAND AFFECTED BY THE FLAT FADING, MODULATOR AND DEMODULATOR THEREOF
EP1528408A1 (en) * 2003-10-31 2005-05-04 Mitsubishi Electric Information Technology Centre Europe B.V. Radar system with decomposition of the wideband transmitted signal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4757495A (en) * 1986-03-05 1988-07-12 Telebit Corporation Speech and data multiplexor optimized for use over impaired and bandwidth restricted analog channels
US5282019A (en) * 1988-10-03 1994-01-25 Carlo Basile Method and apparatus for the transmission and reception of a multicarrier digital television signal
WO1997040608A1 (en) * 1996-04-19 1997-10-30 Amati Communications Corporation Digital radio frequency interference canceller
WO1997048206A1 (en) * 1996-06-07 1997-12-18 Nokia Telecommunications Oy Method and apparatus for implementing a wireline transmission connection

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4757495A (en) * 1986-03-05 1988-07-12 Telebit Corporation Speech and data multiplexor optimized for use over impaired and bandwidth restricted analog channels
US5282019A (en) * 1988-10-03 1994-01-25 Carlo Basile Method and apparatus for the transmission and reception of a multicarrier digital television signal
WO1997040608A1 (en) * 1996-04-19 1997-10-30 Amati Communications Corporation Digital radio frequency interference canceller
WO1997048206A1 (en) * 1996-06-07 1997-12-18 Nokia Telecommunications Oy Method and apparatus for implementing a wireline transmission connection

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JOHN A.C. BINGHAM.: "RFI suppression in multicarrier transmission systems", GLOBAL TELECOMMUNICATIONS CONFERENCE, GLOBECOM, THE KEY TO GLOBAL PROSPERITY '96, COMMUNICATIONS,, 1996 *
LEKE A. ET AL.: "Dynamic bandwidth optimization for wireline and wireless", CONFERENCE RECORD OF THE THIRTY-SECOND ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS,, vol. 2, 1998, pages 1753 - 1757 *

Also Published As

Publication number Publication date
FI105973B (en) 2000-10-31
FI982509A0 (en) 1998-11-19
AU1561900A (en) 2000-06-13
WO2000031939A2 (en) 2000-06-02
FI982509A (en) 2000-05-20

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