AU6417098A - A method and apparatus for shaping the signal spectrum of a transmit signal of amodem - Google Patents

A method and apparatus for shaping the signal spectrum of a transmit signal of amodem

Info

Publication number
AU6417098A
AU6417098A AU64170/98A AU6417098A AU6417098A AU 6417098 A AU6417098 A AU 6417098A AU 64170/98 A AU64170/98 A AU 64170/98A AU 6417098 A AU6417098 A AU 6417098A AU 6417098 A AU6417098 A AU 6417098A
Authority
AU
Australia
Prior art keywords
signal
amodem
shaping
spectrum
transmit signal
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.)
Abandoned
Application number
AU64170/98A
Inventor
Michael Mclaughlin
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.)
Fernway Ltd
Original Assignee
Fernway Ltd
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 Fernway Ltd filed Critical Fernway Ltd
Publication of AU6417098A publication Critical patent/AU6417098A/en
Abandoned 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
    • H04L25/38—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
AU64170/98A 1997-03-05 1998-03-05 A method and apparatus for shaping the signal spectrum of a transmit signal of amodem Abandoned AU6417098A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IE970152 1997-03-05
IE970152 1997-03-05
PCT/IE1998/000020 WO1998039888A2 (en) 1997-03-05 1998-03-05 A method and apparatus for shaping the signal spectrum of a transmit signal of a modem

Publications (1)

Publication Number Publication Date
AU6417098A true AU6417098A (en) 1998-09-22

Family

ID=11041399

Family Applications (1)

Application Number Title Priority Date Filing Date
AU64170/98A Abandoned AU6417098A (en) 1997-03-05 1998-03-05 A method and apparatus for shaping the signal spectrum of a transmit signal of amodem

Country Status (4)

Country Link
AU (1) AU6417098A (en)
GB (1) GB2337433B (en)
IE (1) IES80431B2 (en)
WO (1) WO1998039888A2 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0209902B1 (en) * 1985-07-24 1993-12-08 Nec Corporation Multilevel modulator comprising a compact error correcting code producing unit
US5105443A (en) * 1990-05-29 1992-04-14 At&T Bell Laboratories Inband coding of secondary data
US5249200A (en) * 1991-07-30 1993-09-28 Codex Corporation Device and method for combining precoding with symbol-rate spectral shaping
US5455839A (en) * 1991-12-27 1995-10-03 Motorola, Inc. Device and method for precoding
US5953374A (en) * 1997-03-03 1999-09-14 Pc-Tel, Inc. Bandpass spectral shaping of data signals

Also Published As

Publication number Publication date
IES980160A2 (en) 1998-07-01
GB2337433B (en) 2002-03-06
WO1998039888A3 (en) 1998-12-03
GB9920892D0 (en) 1999-11-10
GB2337433A (en) 1999-11-17
WO1998039888A2 (en) 1998-09-11
IES80431B2 (en) 1998-07-01

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