WO2001015314A3 - Device and method for sending a quadrature amplitude-modulated transmission signal - Google Patents

Device and method for sending a quadrature amplitude-modulated transmission signal Download PDF

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Publication number
WO2001015314A3
WO2001015314A3 PCT/EP2000/008132 EP0008132W WO0115314A3 WO 2001015314 A3 WO2001015314 A3 WO 2001015314A3 EP 0008132 W EP0008132 W EP 0008132W WO 0115314 A3 WO0115314 A3 WO 0115314A3
Authority
WO
WIPO (PCT)
Prior art keywords
phase
transmission signal
sending
complex valued
quadrature amplitude
Prior art date
Application number
PCT/EP2000/008132
Other languages
German (de)
French (fr)
Other versions
WO2001015314A2 (en
Inventor
Heinrich Schenk
Thomas Magesacher
Martin Krueger
Original Assignee
Infineon Technologies Ag
Heinrich Schenk
Thomas Magesacher
Martin Krueger
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 Infineon Technologies Ag, Heinrich Schenk, Thomas Magesacher, Martin Krueger filed Critical Infineon Technologies Ag
Publication of WO2001015314A2 publication Critical patent/WO2001015314A2/en
Publication of WO2001015314A3 publication Critical patent/WO2001015314A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/365—Modulation using digital generation of the modulated carrier (not including modulation of a digitally generated carrier)

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Device for sending a QAM-transmission signal comprising a trigger frequency f0, whereby the device is composed of one coding device (9) which codes data to form complex valued pairs (a, b) consisting of two data; a sensing device (14) for sensing complex valued pair signals with a first scanning frequency; a selector (36) which selects the carrier frequency f0; a memory (31) from which a phase increment δζ associated to a carrier frequency can be read; a battery (25) which generates a phase signal ζ depending on the phase increment δζ reading, and at least one computation device (24) to produce the QAM-transmission signal by multiplying the complex value pairs with a phase rotation operator, whereby said complex valued pair is rotated at a phase angle ζ corresponding to the phase signal.
PCT/EP2000/008132 1999-08-20 2000-08-21 Device and method for sending a quadrature amplitude-modulated transmission signal WO2001015314A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19939588.8 1999-08-20
DE1999139588 DE19939588A1 (en) 1999-08-20 1999-08-20 Device and method for transmitting a quadrature amplitude modulated transmission signal

Publications (2)

Publication Number Publication Date
WO2001015314A2 WO2001015314A2 (en) 2001-03-01
WO2001015314A3 true WO2001015314A3 (en) 2001-06-14

Family

ID=7919083

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/008132 WO2001015314A2 (en) 1999-08-20 2000-08-21 Device and method for sending a quadrature amplitude-modulated transmission signal

Country Status (2)

Country Link
DE (1) DE19939588A1 (en)
WO (1) WO2001015314A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10000958B4 (en) 2000-01-12 2004-04-29 Infineon Technologies Ag Circuit arrangement for generating a quadrature amplitude modulated transmission signal
NL1031482C2 (en) * 2006-03-31 2007-10-05 Stn B V Cable television system with extensive quadrature amplitude modulation signal exchange, transmitting means and a management center therefor.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0493057A1 (en) * 1990-12-20 1992-07-01 Motorola, Inc. Increased frequency resolution in a synthesizer
EP0632369A1 (en) * 1993-06-29 1995-01-04 Stichting voor de Technische Wetenschappen CORDIC algorithms and architectures
EP0658975A1 (en) * 1993-12-14 1995-06-21 ALCATEL ITALIA S.p.A. Baseband predistortion system for the adaptive linearization of power amplifiers
WO1996021305A1 (en) * 1994-12-29 1996-07-11 Motorola Inc. Multiple access digital transmitter and receiver
EP0809195A2 (en) * 1996-05-22 1997-11-26 HE HOLDINGS, INC. dba HUGHES ELECTRONICS Analog waveform communications reduced instruction set processor
US5802111A (en) * 1997-02-24 1998-09-01 Motorola, Inc. Complex constellation point multiplier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0493057A1 (en) * 1990-12-20 1992-07-01 Motorola, Inc. Increased frequency resolution in a synthesizer
EP0632369A1 (en) * 1993-06-29 1995-01-04 Stichting voor de Technische Wetenschappen CORDIC algorithms and architectures
EP0658975A1 (en) * 1993-12-14 1995-06-21 ALCATEL ITALIA S.p.A. Baseband predistortion system for the adaptive linearization of power amplifiers
WO1996021305A1 (en) * 1994-12-29 1996-07-11 Motorola Inc. Multiple access digital transmitter and receiver
EP0809195A2 (en) * 1996-05-22 1997-11-26 HE HOLDINGS, INC. dba HUGHES ELECTRONICS Analog waveform communications reduced instruction set processor
US5802111A (en) * 1997-02-24 1998-09-01 Motorola, Inc. Complex constellation point multiplier

Also Published As

Publication number Publication date
WO2001015314A2 (en) 2001-03-01
DE19939588A1 (en) 2001-03-01

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