EP1476974A4 - 3g-funkgerät - Google Patents
3g-funkgerätInfo
- 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- Withdrawn
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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Transceivers (AREA)
- Circuits Of Receivers In General (AREA)
- Superheterodyne Receivers (AREA)
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 |
US331621 | 2002-12-30 | ||
PCT/US2003/005537 WO2003073661A2 (en) | 2002-02-21 | 2003-02-21 | 3g radio |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1476974A2 EP1476974A2 (de) | 2004-11-17 |
EP1476974A4 true EP1476974A4 (de) | 2005-05-04 |
Family
ID=27767095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03716148A Withdrawn EP1476974A4 (de) | 2002-02-21 | 2003-02-21 | 3g-funkgerät |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1476974A4 (de) |
JP (1) | JP2005518757A (de) |
CN (1) | CN1640085A (de) |
WO (1) | WO2003073661A2 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4289667B2 (ja) * | 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 | 可変利得制御回路および受信装置 |
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 |
US8238858B2 (en) * | 2005-01-14 | 2012-08-07 | Nec Corporation | Communication device, multi-band receiver, and receiver |
JP4500187B2 (ja) * | 2005-03-08 | 2010-07-14 | パナソニック株式会社 | ダイレクトコンバージョン受信機 |
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 (ko) * | 2010-12-10 | 2012-06-20 | 삼성전자주식회사 | 동시대기 단말의 알에스이(rse) 성능 개선 장치 및 방법 |
US9385763B1 (en) | 2015-01-26 | 2016-07-05 | Motorola Solutions, Inc. | Method and apparatus for in-channel interference cancellation |
CN108362941B (zh) * | 2018-03-29 | 2023-07-18 | 珠海迈科智能科技股份有限公司 | 一种测试Tuner模组晶振频偏的设备及方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1102413A2 (de) * | 1999-11-15 | 2001-05-23 | Hitachi, Ltd. | Mehrbandmobilfunkgerät |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW294867B (de) * | 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 |
-
2003
- 2003-02-21 CN CN 03804375 patent/CN1640085A/zh active Pending
- 2003-02-21 EP EP03716148A patent/EP1476974A4/de not_active Withdrawn
- 2003-02-21 WO PCT/US2003/005537 patent/WO2003073661A2/en not_active Application Discontinuation
- 2003-02-21 JP JP2003572218A patent/JP2005518757A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1102413A2 (de) * | 1999-11-15 | 2001-05-23 | Hitachi, Ltd. | Mehrbandmobilfunkgerät |
Non-Patent Citations (1)
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 |
---|---|
WO2003073661A2 (en) | 2003-09-04 |
JP2005518757A (ja) | 2005-06-23 |
CN1640085A (zh) | 2005-07-13 |
EP1476974A2 (de) | 2004-11-17 |
WO2003073661A3 (en) | 2004-03-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20040906 |
|
AK | Designated contracting states |
Kind code of ref document: A2 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 |
Extension state: AL LT LV MK RO |
|
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 |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20051213 |