BR9510108A - Aparelho e processo para compensar digitalmente um sinal interferente - Google Patents

Aparelho e processo para compensar digitalmente um sinal interferente

Info

Publication number
BR9510108A
BR9510108A BR9510108A BR9510108A BR9510108A BR 9510108 A BR9510108 A BR 9510108A BR 9510108 A BR9510108 A BR 9510108A BR 9510108 A BR9510108 A BR 9510108A BR 9510108 A BR9510108 A BR 9510108A
Authority
BR
Brazil
Prior art keywords
interfering signal
digitally compensating
digitally
compensating
interfering
Prior art date
Application number
BR9510108A
Other languages
English (en)
Inventor
Bjoorn Lindquist
Martin Isberg
Heino Wendelrup
Martin Sallenhag
Kjell Gustafsson
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BR9510108A publication Critical patent/BR9510108A/pt

Links

Classifications

    • 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
    • H03D3/009—Compensating quadrature phase or amplitude imbalances
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers
    • 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
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals
    • 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
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
BR9510108A 1994-12-28 1995-12-19 Aparelho e processo para compensar digitalmente um sinal interferente BR9510108A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/365,037 US5579347A (en) 1994-12-28 1994-12-28 Digitally compensated direct conversion receiver
PCT/SE1995/001546 WO1996020539A1 (en) 1994-12-28 1995-12-19 Digitally compensated direct conversion receiver

Publications (1)

Publication Number Publication Date
BR9510108A true BR9510108A (pt) 1997-11-25

Family

ID=23437213

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9510108A BR9510108A (pt) 1994-12-28 1995-12-19 Aparelho e processo para compensar digitalmente um sinal interferente

Country Status (14)

Country Link
US (1) US5579347A (pt)
EP (2) EP1391997B1 (pt)
JP (1) JPH10513616A (pt)
KR (1) KR100379723B1 (pt)
CN (2) CN1146119C (pt)
AU (1) AU698865B2 (pt)
BR (1) BR9510108A (pt)
CA (1) CA2208850A1 (pt)
DE (2) DE69533175T2 (pt)
FI (1) FI114670B (pt)
NO (1) NO972985L (pt)
PL (1) PL184618B1 (pt)
RU (1) RU2146416C1 (pt)
WO (1) WO1996020539A1 (pt)

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US6853690B1 (en) 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US7110444B1 (en) 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
MY133723A (en) * 1999-09-17 2007-11-30 Ericsson Telefon Ab L M "apparatus and method for substantially eliminating a near-channel interfering amplitude modulated signal"
US6373909B2 (en) * 1999-10-22 2002-04-16 Telefonaktiebolaget Lm Ericsson (Publ) Communications terminal having a receiver and method for removing known interferers from a digitized intermediate frequency signal
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DE60024831T2 (de) * 2000-10-30 2006-08-03 Texas Instruments Inc., Dallas Vorrichtung zum Ausgleichen des DC-Offsets eines Quadratur-Demodulators , und Verfahren dazu
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US6731906B2 (en) * 2001-04-23 2004-05-04 University Corporation For Atmospheric Research Method and system for determining the phase and amplitude of a radio occultation signal
DE10128236A1 (de) * 2001-06-11 2002-08-01 Infineon Technologies Ag Verfahren zur Kompensation einer stufenförmigen DC-Störung in einem digitalen Basisbandsignal eines Homodyn-Funkempfängers
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7356326B2 (en) * 2001-12-12 2008-04-08 Samsung Electronics Co., Ltd. Direct-conversion receiver for removing DC offset
US6959170B2 (en) * 2001-12-20 2005-10-25 Motorola, Inc. Communications receivers and methods therefor
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KR101261527B1 (ko) * 2006-10-27 2013-05-06 삼성전자주식회사 직접 변환 구조의 ｒｆ 쿼드러쳐 송수신기에서 부정합을보상하는 방법 및 장치
KR100808244B1 (ko) * 2006-12-15 2008-03-03 한국과학기술원 다중 모드에 따른 입력 임피던스 매칭을 이용하는 무선식별 시스템
GB0803710D0 (en) * 2008-02-28 2008-04-09 Nokia Corp DC compensation
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JP2016517313A (ja) * 2013-03-14 2016-06-16 ミルザ, エム., ズバイルMIRZA, M., Zubair インターネットを利用した疾病モニタリングシステム（ｉｄｍｓ）
RU2542939C1 (ru) * 2013-10-09 2015-02-27 Общество с ограниченной ответственностью "Алсет Веллен" Приемник прямого преобразования с квадратурно-трехфазной архитектурой, способ прямого преобразования сигнала посредством указанного приемника и способ управления настройкой указанного приемника
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Also Published As

Publication number Publication date
NO972985L (no) 1997-08-25
FI972786A0 (fi) 1997-06-27
CA2208850A1 (en) 1996-07-04
PL184618B1 (pl) 2002-11-29
DE69533175D1 (de) 2004-07-22
WO1996020539A1 (en) 1996-07-04
DE69535256D1 (de) 2006-11-16
CN1086066C (zh) 2002-06-05
KR100379723B1 (ko) 2003-06-09
AU4359696A (en) 1996-07-19
FI972786A (fi) 1997-08-22
PL321059A1 (en) 1997-11-24
AU698865B2 (en) 1998-11-12
DE69533175T2 (de) 2005-07-14
NO972985D0 (no) 1997-06-26
RU2146416C1 (ru) 2000-03-10
CN1146119C (zh) 2004-04-14
CN1392672A (zh) 2003-01-22
JPH10513616A (ja) 1998-12-22
FI114670B (fi) 2004-11-30
EP0835557B1 (en) 2004-06-16
EP0835557A1 (en) 1998-04-15
CN1175328A (zh) 1998-03-04
EP1391997B1 (en) 2006-10-04
EP1391997A2 (en) 2004-02-25
MX9704753A (es) 1997-10-31
EP1391997A3 (en) 2004-06-02
US5579347A (en) 1996-11-26

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Legal Events

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FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B24C Patent annual fee: request for for restoration

Free format text: REFERENTE A 12A, 13A E 14A ANUIDADE(S)

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 2046 DE 23/03/2010, E COMPROVAR O RECOLHIMENTO DA(S) 12A., 13A., 14A., 15A., 16A., E 17A., ANUIDADE(S).