ATE445936T1 - Homodyn funkempfänger - Google Patents

Homodyn funkempfänger

Info

Publication number
ATE445936T1
ATE445936T1 AT00904171T AT00904171T ATE445936T1 AT E445936 T1 ATE445936 T1 AT E445936T1 AT 00904171 T AT00904171 T AT 00904171T AT 00904171 T AT00904171 T AT 00904171T AT E445936 T1 ATE445936 T1 AT E445936T1
Authority
AT
Austria
Prior art keywords
square sum
samples
radio receiver
average
calculator
Prior art date
Application number
AT00904171T
Other languages
English (en)
Inventor
Jan Jakobsson
Sven Stenstroem
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
Application granted granted Critical
Publication of ATE445936T1 publication Critical patent/ATE445936T1/de

Links

Classifications

    • 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
    • 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
    • H03D3/008—Compensating DC offsets

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)
  • Optical Communication System (AREA)
  • Circuits Of Receivers In General (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
  • Burglar Alarm Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
AT00904171T 1999-01-27 2000-01-26 Homodyn funkempfänger ATE445936T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9900289A SE9900289D0 (sv) 1999-01-27 1999-01-27 DC estimate method for a homodyne receiver
PCT/SE2000/000147 WO2000045523A2 (en) 1999-01-27 2000-01-26 A homodyne radio receiver

Publications (1)

Publication Number Publication Date
ATE445936T1 true ATE445936T1 (de) 2009-10-15

Family

ID=20414282

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00904171T ATE445936T1 (de) 1999-01-27 2000-01-26 Homodyn funkempfänger

Country Status (11)

Country Link
US (1) US6654596B1 (de)
EP (1) EP1147615B1 (de)
CN (1) CN1148009C (de)
AT (1) ATE445936T1 (de)
AU (1) AU2585400A (de)
DE (1) DE60043147D1 (de)
MY (1) MY123524A (de)
RU (1) RU2241310C2 (de)
SE (1) SE9900289D0 (de)
TR (1) TR200102158T2 (de)
WO (1) WO2000045523A2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2366460A (en) * 2000-08-24 2002-03-06 Nokia Mobile Phones Ltd DC compensation for a direct conversion radio receiver
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
SE526872C2 (sv) 2003-05-26 2005-11-15 Infineon Technologies Wireless Metod och arrangemang för att avlägsna DC-offset från datasymboler
US6965330B1 (en) * 2004-07-22 2005-11-15 International Business Machines Corporation System and method for improved quality signal re-sampling using a weighted signal average
GB0803710D0 (en) * 2008-02-28 2008-04-09 Nokia Corp DC compensation
US8331892B2 (en) 2008-03-29 2012-12-11 Qualcomm Incorporated Method and system for DC compensation and AGC
CN102549994B (zh) 2011-11-15 2014-03-05 华为技术有限公司 一种校正同相正交信号的方法和装置
EP2792089B1 (de) * 2011-12-15 2015-08-12 Telefonaktiebolaget LM Ericsson (Publ) Optischer homodyner kohärenter empfänger und verfahren zum empfang eines optischen multikanalsignals
US9715006B2 (en) * 2014-02-05 2017-07-25 Ford Global Technologies, Llc System and method for avoiding DC bias in a homodyne receiver
US10763977B2 (en) 2015-03-09 2020-09-01 Sony Corporation Device and method for determining a DC component
RU2626405C2 (ru) * 2015-12-28 2017-07-27 Федеральное государственное бюджетное образовательное учреждение высшего образования Московский авиационный институт (национальный исследовательский университет) (МАИ) Гомодинный радиолокатор
CN108183722B (zh) * 2016-12-08 2020-03-17 博通集成电路（上海）股份有限公司 电子收费接收器及其运行方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4873702A (en) * 1988-10-20 1989-10-10 Chiu Ran Fun Method and apparatus for DC restoration in digital receivers
US4979230A (en) 1989-12-04 1990-12-18 General Instrument Corporation Up-conversion homodyne receiver for cable television converter with frequency offset to avoid adjacent channel interference
JP2807921B2 (ja) 1990-07-24 1998-10-08 アンリツ株式会社 Ｆｍ検波装置
US5241702A (en) 1990-09-06 1993-08-31 Telefonaktiebolaget L M Ericsson D.c. offset compensation in a radio receiver
GB2274759B (en) * 1993-02-02 1996-11-13 Nokia Mobile Phones Ltd Correction of D.C offset in received and demodulated radio signals
DE4341937A1 (de) * 1993-12-09 1995-06-14 Philips Patentverwaltung Elektrisches Gerät mit einer Anordnung zur Kompensation eines Gleichspannungsanteils
US5568520A (en) * 1995-03-09 1996-10-22 Ericsson Inc. Slope drift and offset compensation in zero-IF receivers
US5838735A (en) 1996-07-08 1998-11-17 Telefonaktiebolaget Lm Ericsson Method and apparatus for compensating for a varying d.c. offset in a sampled signal
US5749051A (en) * 1996-07-18 1998-05-05 Ericsson Inc. Compensation for second order intermodulation in a homodyne receiver
US6370205B1 (en) * 1999-07-02 2002-04-09 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for performing DC-offset compensation in a radio receiver

Also Published As

Publication number Publication date
CN1148009C (zh) 2004-04-28
TR200102158T2 (tr) 2001-12-21
US6654596B1 (en) 2003-11-25
CN1341297A (zh) 2002-03-20
DE60043147D1 (de) 2009-11-26
EP1147615A2 (de) 2001-10-24
RU2241310C2 (ru) 2004-11-27
SE9900289D0 (sv) 1999-01-27
WO2000045523A3 (en) 2000-12-07
WO2000045523A2 (en) 2000-08-03
AU2585400A (en) 2000-08-18
EP1147615B1 (de) 2009-10-14
MY123524A (en) 2006-05-31

Similar Documents

Publication Publication Date Title
DE60043147D1 (de) Homodyn funkempfänger
NL193013B (nl) Abonnee-eenheid voor een draadloos digitaal communicatiesysteem.
AU3990800A (en) Case for mobile terminal
EP2261687A3 (de) Verbesserungen in Funkortungsystemen
WO2006011953A3 (en) Method and apparatus for accessing a wireless multi-carrier communication system
EP1467518A4 (de) Funkkommunikationssystem
CA2404917A1 (en) Cdma system which uses pre-rotation before transmission
BR0008400A (pt) Receptor de rádio, terminal de comunicações, e, método para compensar um deslocamento de cc indesejável dentro de um receptor de rádio
DE69618130T2 (de) Adaptive Frequenzkorrektur für Burstdetektor für GSM-Telefonhandapparat
CA2108477A1 (en) Digital radio mobile frequency supervision
DK0950290T3 (da) Måling af transmissionstidsforsinkelse på transmissionsveje i et radiotelekommunikationssystem
AU7292200A (en) Quality measurement of circuit-switched service in cellular radio network
EP1524871A3 (de) Apparatus zum Scannen von WCDMA-Kanälen
EP1480354A3 (de) Frequenz- und Zeitsynchronisierung und Fehlerkorrektur in einem Satellitennetz
MY121742A (en) A cellular positioning system that compensates for received signal delays in positioning radio receivers
MY133723A (en) "apparatus and method for substantially eliminating a near-channel interfering amplitude modulated signal"
FR2801453B1 (fr) Procede de provisionnement domestique et itinerant pour un terminal mobile
DK1294207T3 (da) Fremgangsmåde til gennemförelse af målinger i en trådlös terminal og en trådlös terminal
EP1111822A3 (de) Qualität-Anzeiger für drahtlosen Kanal
FI991593A (fi) Menetelmä ja järjestely käyttötarpeen palvelupohjaiseksi indikoimiseks i ja ohjaamiseksi
WO2001015315A8 (de) Verfahren zum ausregeln eines frequenzoffsets im empfänger einer basisstation eines nachrichtenübertragungssystems
JPS5548678A (en) Automatic time correction device
DE60021502D1 (de) Fernsehsignalsender zur Unterdrückung der durch das Differenzsignal von zwei Frequenzwandlern verursachten Interferenz
US8068573B1 (en) Phase dithered digital communications system
US7724805B1 (en) Fast RMS measurement of input I/Q signals in a W-CDMA system

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties