EP1476974A4 - 3g radio - Google Patents

3g radio

Info

Publication number
EP1476974A4
EP1476974A4 EP03716148A EP03716148A EP1476974A4 EP 1476974 A4 EP1476974 A4 EP 1476974A4 EP 03716148 A EP03716148 A EP 03716148A EP 03716148 A EP03716148 A EP 03716148A EP 1476974 A4 EP1476974 A4 EP 1476974A4
Authority
EP
European Patent Office
Prior art keywords
radio
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP03716148A
Other languages
German (de)
French (fr)
Other versions
EP1476974A2 (en
Inventor
Simon Atkinson
Aidan Cahalane
Paul Ferguson Jr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Analog Devices Inc
Original Assignee
Analog Devices 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 GBGB0204108.5A external-priority patent/GB0204108D0/en
Application filed by Analog Devices Inc filed Critical Analog Devices Inc
Publication of EP1476974A2 publication Critical patent/EP1476974A2/en
Publication of EP1476974A4 publication Critical patent/EP1476974A4/en
Withdrawn legal-status Critical Current

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
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
    • H04L25/062—Setting decision thresholds using feedforward techniques only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
    • H04L25/063—Setting decision thresholds using feedback techniques only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
EP03716148A 2002-02-21 2003-02-21 3g radio Withdrawn EP1476974A4 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB0204108 2002-02-21
GBGB0204108.5A GB0204108D0 (en) 2002-02-21 2002-02-21 3G radio
US10/331,621 US20030156668A1 (en) 2002-02-21 2002-12-30 3G radio
PCT/US2003/005537 WO2003073661A2 (en) 2002-02-21 2003-02-21 3g radio
US331621 2008-12-10

Publications (2)

Publication Number Publication Date
EP1476974A2 EP1476974A2 (en) 2004-11-17
EP1476974A4 true EP1476974A4 (en) 2005-05-04

Family

ID=27767095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03716148A Withdrawn EP1476974A4 (en) 2002-02-21 2003-02-21 3g radio

Country Status (4)

Country Link
EP (1) EP1476974A4 (en)
JP (1) JP2005518757A (en)
CN (1) CN1640085A (en)
WO (1) WO2003073661A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4289667B2 (en) * 2003-09-16 2009-07-01 ソニー・エリクソン・モバイルコミュニケーションズ株式会社 Variable gain control circuit and receiver
US7643848B2 (en) 2004-04-13 2010-01-05 Qualcomm, Incorporated Multi-antenna transceiver system
US7231193B2 (en) * 2004-04-13 2007-06-12 Skyworks Solutions, Inc. Direct current offset correction systems and methods
GB0419725D0 (en) * 2004-09-06 2004-10-06 Radioscape Ltd DC offset cancellation for the reception of OFDM transmissions
CN101103538B (en) * 2005-01-14 2014-06-04 日本电气株式会社 Communication device, multi-band reception device, and reception device
JP4500187B2 (en) * 2005-03-08 2010-07-14 パナソニック株式会社 Direct conversion receiver
US7835467B2 (en) * 2006-01-05 2010-11-16 Qualcomm, Incorporated DC offset correction for high gain complex filter
US7672645B2 (en) 2006-06-15 2010-03-02 Bitwave Semiconductor, Inc. Programmable transmitter architecture for non-constant and constant envelope modulation
KR20120064834A (en) * 2010-12-10 2012-06-20 삼성전자주식회사 Apparatus and method for improving performance of rse in a multi-standby terminal
US9385763B1 (en) 2015-01-26 2016-07-05 Motorola Solutions, Inc. Method and apparatus for in-channel interference cancellation
CN108362941B (en) * 2018-03-29 2023-07-18 珠海迈科智能科技股份有限公司 Equipment and method for testing frequency deviation of Tuner module crystal oscillator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1102413A2 (en) * 1999-11-15 2001-05-23 Hitachi, Ltd. Multiband mobile communication apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW294867B (en) * 1994-12-23 1997-01-01 Qualcomm Inc
US6031878A (en) * 1997-02-28 2000-02-29 Maxim Integrated Products, Inc. Direct-conversion tuner integrated circuit for direct broadcast satellite television

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1102413A2 (en) * 1999-11-15 2001-05-23 Hitachi, Ltd. Multiband mobile communication apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
STROET P M: "A zero-IF single-chip transceiver for up to 22Mb/s QPSK 802.11b wireless LAN", 5 February 2001, SOLID-STATE CIRCUITS CONFERENCE, 2001. DIGEST OF TECHNICAL PAPERS. ISSCC. 2001 IEEE INTERNATIONAL FEB. 5-7, 2001, PISCATAWAY, NJ, USA,IEEE, PAGE(S) 204-447, ISBN: 0-7803-6608-5, XP010536238 *

Also Published As

Publication number Publication date
EP1476974A2 (en) 2004-11-17
WO2003073661A2 (en) 2003-09-04
WO2003073661A3 (en) 2004-03-04
JP2005518757A (en) 2005-06-23
CN1640085A (en) 2005-07-13

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 20040906

AK Designated contracting states

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Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR

AX Request for extension of the european patent

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A4 Supplementary search report drawn up and despatched

Effective date: 20050322

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 20051213