BR9000175A - Distorcedor digital - Google Patents

Distorcedor digital

Info

Publication number
BR9000175A
BR9000175A BR909000175A BR9000175A BR9000175A BR 9000175 A BR9000175 A BR 9000175A BR 909000175 A BR909000175 A BR 909000175A BR 9000175 A BR9000175 A BR 9000175A BR 9000175 A BR9000175 A BR 9000175A
Authority
BR
Brazil
Prior art keywords
distortion
distorted
data
signal location
values
Prior art date
Application number
BR909000175A
Other languages
English (en)
Inventor
Jesef A Nossek
Tobias Noll
Hermann Ens
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of BR9000175A publication Critical patent/BR9000175A/pt

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
    • H04L27/38—Demodulator circuits; Receiver circuits
    • 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
    • H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
    • H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Amplifiers (AREA)
  • Gyroscopes (AREA)
  • Semiconductor Lasers (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
BR909000175A 1989-01-18 1990-01-17 Distorcedor digital BR9000175A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89100802A EP0378719B1 (de) 1989-01-18 1989-01-18 Digitaler Verzerrer

Publications (1)

Publication Number Publication Date
BR9000175A true BR9000175A (pt) 1990-10-23

Family

ID=8200870

Family Applications (1)

Application Number Title Priority Date Filing Date
BR909000175A BR9000175A (pt) 1989-01-18 1990-01-17 Distorcedor digital

Country Status (7)

Country Link
EP (1) EP0378719B1 (pt)
AT (1) ATE105124T1 (pt)
AU (1) AU610449B2 (pt)
BR (1) BR9000175A (pt)
DE (1) DE58907579D1 (pt)
ES (1) ES2051896T3 (pt)
MX (1) MX172581B (pt)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE465494B (sv) * 1990-01-22 1991-09-16 Ericsson Telefon Ab L M Foerfarande att kompensera foer olineariteter i en slutfoerstaerkare
WO1992008297A1 (en) * 1990-10-24 1992-05-14 Motorola, Inc. An apparatus and method for varying a signal in a transmitter of a transceiver
FR2707127A1 (fr) * 1993-06-29 1995-01-06 Philips Laboratoire Electroniq Système de transmission numérique à prédisposition.
AU684688B2 (en) * 1995-08-01 1997-12-18 Canon Kabushiki Kaisha QAM spread spectrum demodulation system
AUPN455695A0 (en) * 1995-08-01 1995-08-24 Canon Kabushiki Kaisha Qam spread spectrum demodulation system
GB2349317A (en) * 1998-01-21 2000-10-25 Nokia Mobile Phones Ltd Pulse shaping which compensates for component distortion
GB2358974B (en) * 2000-02-01 2002-07-17 Wireless Systems Int Ltd Distortion reduction
DE60124809T2 (de) 2000-03-23 2007-03-15 Matsushita Electric Industrial Co., Ltd., Kadoma Digitaler Empfänger
DE10136071A1 (de) * 2001-07-25 2003-02-13 Infineon Technologies Ag Verfahren und Vorrichtung zur Kompensation eines Phasenfehlers eines Empfangs- und/oder Sendesystems mit I/Q-Schnittstelle
EP1976213B1 (en) * 2007-03-28 2009-07-29 Interuniversitair Microelektronica Centrum vzw ( IMEC) Calibration method for non-ideal transceivers
DE102007037105A1 (de) 2007-05-09 2008-11-13 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zur Detektion von simultaner Doppelaussendung von AM-Signalen
JP5254348B2 (ja) 2007-10-31 2013-08-07 アイメック 相補ゴーレイシーケンス対を用いて送受信器非理想性を決定し補償するための方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1145719B (it) * 1981-11-12 1986-11-05 Cselt Centro Studi Lab Telecom Circuito di recupero della partante di un segnale modulato in ampiezza e fase da segnali numerici
JPS59112748A (ja) * 1982-12-06 1984-06-29 Fujitsu Ltd デ−タ送受信システム
FR2542536B1 (fr) * 1983-03-07 1985-07-12 Trt Telecom Radio Electr Dispositif de recuperation de la porteuse d'un signal d'entree module par sauts d'amplitude et par sauts de phase
US4700151A (en) * 1985-03-20 1987-10-13 Nec Corporation Modulation system capable of improving a transmission system
DE3766614D1 (de) * 1987-03-10 1991-01-17 Ant Nachrichtentech Verfahren zum gewinnen eines phasendifferenzsignals.

Also Published As

Publication number Publication date
EP0378719B1 (de) 1994-04-27
DE58907579D1 (de) 1994-06-01
ATE105124T1 (de) 1994-05-15
AU610449B2 (en) 1991-05-16
AU4852990A (en) 1990-07-26
ES2051896T3 (es) 1994-07-01
MX172581B (es) 1994-01-03
EP0378719A1 (de) 1990-07-25

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Legal Events

Date Code Title Description
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 17/01/2005