CN1578295B - 正交频分多路复用无线接收器中的直流偏移预测及补偿 - Google Patents
正交频分多路复用无线接收器中的直流偏移预测及补偿 Download PDFInfo
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- CN1578295B CN1578295B CN200410071203.6A CN200410071203A CN1578295B CN 1578295 B CN1578295 B CN 1578295B CN 200410071203 A CN200410071203 A CN 200410071203A CN 1578295 B CN1578295 B CN 1578295B
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- 238000000034 method Methods 0.000 claims abstract description 78
- 238000012549 training Methods 0.000 claims abstract description 73
- 230000000630 rising effect Effects 0.000 claims abstract description 29
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Classifications
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Abstract
Description
Claims (17)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10331818.6 | 2003-07-14 | ||
DE10331818A DE10331818B3 (de) | 2003-07-14 | 2003-07-14 | Verfahren zur Schätzung des DC-Offsets eines OFDM-Empfangssignals, Vorrichtung zur Durchführung des Verfahrens, Funkempfänger mit einer solchen Vorrichtung, sowie Verfahren zur Kompensation eines DC-Offsets eines OFDM-Empfangssignals, Vorrichtung zur Durchführung dieses Verfahrens und Funkempfänger mit einer solchen Vorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1578295A CN1578295A (zh) | 2005-02-09 |
CN1578295B true CN1578295B (zh) | 2012-05-16 |
Family
ID=34088633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200410071203.6A Expired - Fee Related CN1578295B (zh) | 2003-07-14 | 2004-07-14 | 正交频分多路复用无线接收器中的直流偏移预测及补偿 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7634013B2 (zh) |
CN (1) | CN1578295B (zh) |
DE (1) | DE10331818B3 (zh) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7324609B1 (en) * | 2003-11-05 | 2008-01-29 | Advanced Micro Devices, Inc. | DC offset cancellation in a direct conversion receiver configured for receiving an OFDM signal |
DE102005006443A1 (de) * | 2005-02-12 | 2006-08-24 | Newlogic Technologies Ag | Vorrichtung und Verfahren zur Detektion von Präambeln nach den IEEE 802.11a/b/g Wireless Standards und seine Anwendung auf einen 802.11 Multimodenempfänger |
US7773679B2 (en) * | 2005-07-08 | 2010-08-10 | Qualcomm Incorporated | Base station methods and apparatus for DC tone special treatment |
US7773703B2 (en) * | 2005-07-08 | 2010-08-10 | Qualcomm Incorporated | Methods and apparatus for communicating using a DC tone |
US7529300B2 (en) | 2005-07-26 | 2009-05-05 | Cubic Corporation | Shaped-offset quadrature amplitude modulation methods and apparatus |
US7933348B2 (en) * | 2006-09-19 | 2011-04-26 | Industrial Technology Research Institute | DC offset estimation system and method |
US8311137B1 (en) * | 2008-01-24 | 2012-11-13 | Marvell International Ltd. | Method for DC offset removal in OFDM systems |
US8218686B1 (en) | 2008-04-18 | 2012-07-10 | Marvell International Ltd. | Circuit and method for DC offset compensation |
WO2012103363A1 (en) * | 2011-01-28 | 2012-08-02 | Marvell World Trade Ltd. | Physical layer frame format for long range wlan |
CN103095320A (zh) * | 2011-10-28 | 2013-05-08 | 京信通信系统(中国)有限公司 | 零中频接收机及其直流泄漏抑制方法 |
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 |
EP3155746B1 (en) | 2014-06-13 | 2018-09-19 | Telefonaktiebolaget LM Ericsson (publ) | Preamble sets matched to uplink transmission conditions |
CN105553489B (zh) * | 2015-12-09 | 2018-03-23 | 苏州威发半导体有限公司 | Ofdm系统数字基带接收机进行直流消除的方法 |
CN110943748B (zh) * | 2019-11-08 | 2022-04-12 | 芯原微电子(上海)股份有限公司 | 一种自动失配校准电路、射频接收机系统及方法 |
CN114448475A (zh) * | 2022-01-06 | 2022-05-06 | 浙江科睿微电子技术有限公司 | 一种用于wlan系统的噪声能量确定方法及相关设备 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5117291A (en) * | 1990-11-30 | 1992-05-26 | At&T Bell Laboratories | Technique for adjusting signal dispersion cancellation apparatus in communications systems |
EP0921663A2 (en) * | 1997-12-04 | 1999-06-09 | Nec Corporation | DC-offset canceller |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6853681B1 (en) * | 2000-11-28 | 2005-02-08 | Telefonaktiebolaget L M Ericsson (Publ) | Using different channel models for different training sequences |
US6901121B1 (en) * | 2001-02-20 | 2005-05-31 | Comsys Communication & Signal Processing Ltd. | Compensation of DC offset impairment in a communications receiver |
US7035589B1 (en) * | 2001-09-24 | 2006-04-25 | Atheros Communications, Inc. | Method and system for tracking and mitigating DC offset in the presence of carrier frequency offsets |
US7167530B2 (en) * | 2002-01-11 | 2007-01-23 | Rf Micro Devices, Inc. | Estimation and correction of DC offset in the presence of frequency offset |
SE526872C2 (sv) * | 2003-05-26 | 2005-11-15 | Infineon Technologies Wireless | Metod och arrangemang för att avlägsna DC-offset från datasymboler |
US7324609B1 (en) * | 2003-11-05 | 2008-01-29 | Advanced Micro Devices, Inc. | DC offset cancellation in a direct conversion receiver configured for receiving an OFDM signal |
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2003
- 2003-07-14 DE DE10331818A patent/DE10331818B3/de not_active Expired - Fee Related
-
2004
- 2004-07-14 US US10/890,666 patent/US7634013B2/en not_active Expired - Fee Related
- 2004-07-14 CN CN200410071203.6A patent/CN1578295B/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5117291A (en) * | 1990-11-30 | 1992-05-26 | At&T Bell Laboratories | Technique for adjusting signal dispersion cancellation apparatus in communications systems |
EP0921663A2 (en) * | 1997-12-04 | 1999-06-09 | Nec Corporation | DC-offset canceller |
Also Published As
Publication number | Publication date |
---|---|
US7634013B2 (en) | 2009-12-15 |
DE10331818B3 (de) | 2005-03-10 |
CN1578295A (zh) | 2005-02-09 |
US20050025041A1 (en) | 2005-02-03 |
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Owner name: INTEL MOBILE COMMUNICATIONS TECHNOLOGY LTD. Free format text: FORMER OWNER: INFENNIAN TECHNOLOGIES AG Effective date: 20120521 Owner name: INTEL MOBILE COMMUNICATIONS LTD. Free format text: FORMER OWNER: INTEL MOBILE COMMUNICATIONS TECHNOLOGY LTD. Effective date: 20120521 |
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Effective date of registration: 20120521 Address after: Neubiberg, Germany Patentee after: Intel Mobile Communications GmbH Address before: Munich, Germany Patentee before: INFINEON TECHNOLOGIES AG Effective date of registration: 20120521 Address after: Neubiberg, Germany Patentee after: Intel Mobile Communications GmbH Address before: Neubiberg, Germany Patentee before: Intel Mobile Communications GmbH |
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