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SG54285A1 - Self-adjusting modulator - Google Patents

Self-adjusting modulator

Info

Publication number
SG54285A1
SG54285A1 SG1996007772A SG1996007772A SG54285A1 SG 54285 A1 SG54285 A1 SG 54285A1 SG 1996007772 A SG1996007772 A SG 1996007772A SG 1996007772 A SG1996007772 A SG 1996007772A SG 54285 A1 SG54285 A1 SG 54285A1
Authority
SG
Singapore
Prior art keywords
self
adjusting modulator
modulator
adjusting
Prior art date
Application number
SG1996007772A
Inventor
Paul W Dent
Original Assignee
Ericsson Ge Mobile 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 to US08/068,087 priority Critical patent/US5351016A/en
Priority to ITMI941096A priority patent/IT1269854B/en
Priority to FR9406479A priority patent/FR2705852A1/en
Priority to PCT/US1994/006409 priority patent/WO1995034126A1/en
Priority to JP8500794A priority patent/JPH09504673A/en
Priority to BR9407376A priority patent/BR9407376A/en
Priority to AU70560/94A priority patent/AU681676B2/en
Priority to ES09650006A priority patent/ES2118050B1/en
Application filed by Ericsson Ge Mobile Inc filed Critical Ericsson Ge Mobile Inc
Priority to NL9420028A priority patent/NL194108C/en
Priority to SG1996007772A priority patent/SG54285A1/en
Priority to DE4480968T priority patent/DE4480968T1/en
Priority to GB9601150A priority patent/GB2295752B/en
Priority claimed from PCT/US1994/006407 external-priority patent/WO1994029826A1/en
Priority to SE9600417A priority patent/SE9600417D0/en
Priority to FI960520A priority patent/FI960520A7/en
Publication of SG54285A1 publication Critical patent/SG54285A1/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3282—Acting on the phase and the amplitude of the input signal
    • 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
    • H03C3/406—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 using a feedback loop containing mixers or demodulators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3294—Acting on the real and imaginary components of the input signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • H04L27/2071—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/331—Sigma delta modulation being used in an amplifying circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Stereo-Broadcasting Methods (AREA)
SG1996007772A 1993-05-28 1994-06-06 Self-adjusting modulator SG54285A1 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
US08/068,087 US5351016A (en) 1993-05-28 1993-05-28 Adaptively self-correcting modulation system and method
FR9406479A FR2705852A1 (en) 1993-05-28 1994-05-27 Self-adjusting modulator and corresponding modulation method.
ITMI941096A IT1269854B (en) 1993-05-28 1994-05-27 SELF-REGULATING MODULATOR
SG1996007772A SG54285A1 (en) 1994-06-06 1994-06-06 Self-adjusting modulator
BR9407376A BR9407376A (en) 1993-05-28 1994-06-06 Modulator and self-tuning modulation process to transmit an exactly modulated signal
AU70560/94A AU681676B2 (en) 1994-06-06 1994-06-06 Self-adjusting modulator
ES09650006A ES2118050B1 (en) 1994-06-06 1994-06-06 SELF-ADJUSTABLE MODULATOR AND SELF-ADJUSTABLE MODULATION METHOD
PCT/US1994/006409 WO1995034126A1 (en) 1993-05-28 1994-06-06 Self-adjusting modulator
NL9420028A NL194108C (en) 1994-06-06 1994-06-06 Adaptive pre-compensated quadrature modulator
JP8500794A JPH09504673A (en) 1994-06-06 1994-06-06 Self-regulating modulator
DE4480968T DE4480968T1 (en) 1994-06-06 1994-06-06 Self-adjusting modulator
GB9601150A GB2295752B (en) 1993-05-28 1994-06-06 Self-adjusting modulator
FI960520A FI960520A7 (en) 1994-06-06 1996-02-05 Self-adjusting modulator
SE9600417A SE9600417D0 (en) 1993-05-28 1996-02-05 Self-adjusting modulator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/US1994/006407 WO1994029826A1 (en) 1993-06-04 1994-06-06 Error compensating instrument system with digital communications
SG1996007772A SG54285A1 (en) 1994-06-06 1994-06-06 Self-adjusting modulator

Publications (1)

Publication Number Publication Date
SG54285A1 true SG54285A1 (en) 1998-11-16

Family

ID=20429360

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996007772A SG54285A1 (en) 1993-05-28 1994-06-06 Self-adjusting modulator

Country Status (3)

Country Link
JP (1) JPH09504673A (en)
AU (1) AU681676B2 (en)
SG (1) SG54285A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1628288A (en) * 2002-05-29 2005-06-15 三菱电机株式会社 Signal processor
WO2004086713A1 (en) * 2003-03-24 2004-10-07 Advantest Corporation Orthogonal modulation device, method, program, recording medium, and modulation device
JP4918927B2 (en) 2006-04-21 2012-04-18 日本電気株式会社 Signal processing circuit
WO2008018263A1 (en) 2006-08-08 2008-02-14 Nec Corporation Signal processing circuit and signal processing method
WO2009008445A1 (en) 2007-07-10 2009-01-15 Nec Corporation Signal processor and signal processing method
US11546058B1 (en) * 2020-01-29 2023-01-03 Cable Television Laboratories, Inc. Systems and methods for chromatic dispersion pre-compensation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI81704C (en) * 1989-04-11 1990-11-12 Telenokia Oy quadrature modulator

Also Published As

Publication number Publication date
AU681676B2 (en) 1997-09-04
JPH09504673A (en) 1997-05-06
AU7056094A (en) 1996-01-04

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