WO2004034658A3 - Method of digital modulation and corresponding transmitter - Google Patents

Method of digital modulation and corresponding transmitter Download PDF

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Publication number
WO2004034658A3
WO2004034658A3 PCT/US2003/031891 US0331891W WO2004034658A3 WO 2004034658 A3 WO2004034658 A3 WO 2004034658A3 US 0331891 W US0331891 W US 0331891W WO 2004034658 A3 WO2004034658 A3 WO 2004034658A3
Authority
WO
WIPO (PCT)
Prior art keywords
signals
modified signal
digital modulation
corresponding transmitter
regulating
Prior art date
Application number
PCT/US2003/031891
Other languages
French (fr)
Other versions
WO2004034658A2 (en
Inventor
Walid Khairy Mohamed Ahmed
Original Assignee
Ma Com 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
Priority claimed from US10/610,440 external-priority patent/US7151913B2/en
Application filed by Ma Com Inc filed Critical Ma Com Inc
Priority to AU2003299684A priority Critical patent/AU2003299684A1/en
Publication of WO2004034658A2 publication Critical patent/WO2004034658A2/en
Publication of WO2004034658A3 publication Critical patent/WO2004034658A3/en

Links

Classifications

    • 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
    • H04L27/361—Modulation using a single or unspecified number of carriers, e.g. with separate stages of phase and amplitude modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated

Landscapes

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

Abstract

The invention relates to a system for electromagnetic processing of an input wave involving receiving a modified signal derived from two or more signals that represent the input wave when combined; and regulating the modified signal using at least one characteristic of the two or more signals. Embodiments of the invention may utilize in-phase and quadrature phase signals, where the magnitude portion of the signals may be used for regulating the modified signal. The modified signal may be created by modulating a characteristic of the I, Q signals, such as their sign, with an RF or other frequency carrier wave.
PCT/US2003/031891 2002-10-08 2003-10-08 Method of digital modulation and corresponding transmitter WO2004034658A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003299684A AU2003299684A1 (en) 2002-10-08 2003-10-08 Method of digital modulation and corresponding transmitter

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US41686102P 2002-10-08 2002-10-08
US60/416,861 2002-10-08
US10/610,440 US7151913B2 (en) 2003-06-30 2003-06-30 Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture
US10/610,440 2003-06-30

Publications (2)

Publication Number Publication Date
WO2004034658A2 WO2004034658A2 (en) 2004-04-22
WO2004034658A3 true WO2004034658A3 (en) 2004-06-10

Family

ID=32096167

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/031891 WO2004034658A2 (en) 2002-10-08 2003-10-08 Method of digital modulation and corresponding transmitter

Country Status (2)

Country Link
AU (1) AU2003299684A1 (en)
WO (1) WO2004034658A2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000041371A2 (en) * 1999-01-07 2000-07-13 Ericsson, Inc. Power i-q modulation systems and methods using predistortion circuit
US6411655B1 (en) * 1998-12-18 2002-06-25 Ericsson Inc. Systems and methods for converting a stream of complex numbers into an amplitude and phase-modulated radio power signal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6411655B1 (en) * 1998-12-18 2002-06-25 Ericsson Inc. Systems and methods for converting a stream of complex numbers into an amplitude and phase-modulated radio power signal
WO2000041371A2 (en) * 1999-01-07 2000-07-13 Ericsson, Inc. Power i-q modulation systems and methods using predistortion circuit

Also Published As

Publication number Publication date
WO2004034658A2 (en) 2004-04-22
AU2003299684A1 (en) 2004-05-04
AU2003299684A8 (en) 2004-05-04

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