NO20073474L - Lavkompleksitets adaptiv kanalbedommelse - Google Patents
Lavkompleksitets adaptiv kanalbedommelseInfo
- Publication number
- NO20073474L NO20073474L NO20073474A NO20073474A NO20073474L NO 20073474 L NO20073474 L NO 20073474L NO 20073474 A NO20073474 A NO 20073474A NO 20073474 A NO20073474 A NO 20073474A NO 20073474 L NO20073474 L NO 20073474L
- Authority
- NO
- Norway
- Prior art keywords
- index values
- estimates
- filter
- wireless communication
- communication signal
- Prior art date
Links
Classifications
-
- 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
- H04L25/0202—Channel estimation
-
- 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
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
-
- 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
- H04L25/0202—Channel estimation
- H04L25/0212—Channel estimation of impulse response
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Det er tilveiebrakt en kanalestimerings-anordning og -fremgangsmåte for et trådløst kommunikasjonssignal mottatt fra i det minste én relativt mobil trådløs sender/mottakerenhet (WTRU). Forut bestemte filterkoeffisienter med unike indeksverdier vil være lagret i lagerinnretningen. En indeksgenerator vil sammenligne hastighetsestimater og SNR-estimater med et spesifikt sett av filterkoeffisienter, og velge korresponderende indeksverdier, hvorved lageret vil tilveiebringe en oppslagsfunksjon for indeksverdiene, med en filterkoeffisientvektor som utgangsverdi. En kanalestimering av det trådløse kommunikasjonssignal vil resultere fra utgangen av filteret. Alternativt kan et sett av parallelle filtre som kjøres kontinuerlig anvendes for produksjon av flere kanalestimater, fra hvilke det endelige estimat velges basert på det tilknyttede laveste g,jennomsnittskvadratfeil (MSE)-estimat eller største SNR-verdi.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/007,998 US20060128326A1 (en) | 2004-12-09 | 2004-12-09 | Low complexity adaptive channel estimation |
PCT/US2005/043121 WO2006062767A2 (en) | 2004-12-09 | 2005-11-30 | Low complexity adaptive channel estimation |
Publications (1)
Publication Number | Publication Date |
---|---|
NO20073474L true NO20073474L (no) | 2007-09-07 |
Family
ID=36578400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO20073474A NO20073474L (no) | 2004-12-09 | 2007-07-05 | Lavkompleksitets adaptiv kanalbedommelse |
Country Status (10)
Country | Link |
---|---|
US (1) | US20060128326A1 (no) |
EP (1) | EP1820282A4 (no) |
JP (1) | JP2008523721A (no) |
KR (2) | KR20070086995A (no) |
CN (1) | CN101065909A (no) |
CA (1) | CA2589756A1 (no) |
MX (1) | MX2007006719A (no) |
NO (1) | NO20073474L (no) |
TW (1) | TW200629937A (no) |
WO (1) | WO2006062767A2 (no) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100688510B1 (ko) * | 2004-12-20 | 2007-03-02 | 삼성전자주식회사 | 계수 갱신 회로, 이를 포함하는 적응 등화기, 및 적응등화기의 계수 갱신 방법 |
US8761312B2 (en) * | 2005-02-11 | 2014-06-24 | Qualcomm Incorporated | Selection of a thresholding parameter for channel estimation |
US7848463B2 (en) * | 2005-04-07 | 2010-12-07 | Qualcomm Incorporated | Adaptive time-filtering for channel estimation in OFDM system |
US7822069B2 (en) * | 2006-05-22 | 2010-10-26 | Qualcomm Incorporated | Phase correction for OFDM and MIMO transmissions |
KR100773294B1 (ko) * | 2006-08-28 | 2007-11-05 | 삼성전자주식회사 | 광대역 무선접속 시스템에서 채널 추정 장치 및 방법 |
US8411805B1 (en) * | 2007-08-14 | 2013-04-02 | Marvell International Ltd. | Joint estimation of channel and preamble sequence for orthogonal frequency division multiplexing systems |
US8000413B2 (en) * | 2007-08-20 | 2011-08-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Selective signal demodulation method and apparatus |
KR101490342B1 (ko) * | 2007-11-26 | 2015-02-05 | 삼성전자주식회사 | 이동통신 시스템의 채널 추정 장치 및 방법 |
FR2937482B1 (fr) * | 2008-10-21 | 2011-12-30 | St Microelectronics Sa | Recepteur comportant un dispositif de correction de l'effet doppler |
EP2194655A1 (en) * | 2008-12-05 | 2010-06-09 | ST Wireless SA | Variable path detection length for efficient paging detection procedure |
CN101777885B (zh) * | 2009-01-14 | 2012-06-06 | 华为终端有限公司 | 滤波器系数的确定方法和装置 |
WO2011100858A1 (en) * | 2010-02-17 | 2011-08-25 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for enhancing channel estimation |
US8761598B2 (en) * | 2010-04-08 | 2014-06-24 | Broadcom Corporation | Method and system for adaptively setting a transmitter filter for a high speed serial link transmitter |
CN102158199B (zh) * | 2010-12-31 | 2014-02-19 | 意法·爱立信半导体(北京)有限公司 | 时变***中预存储滤波器系数组的选择方法及装置 |
KR101585447B1 (ko) * | 2011-02-15 | 2016-01-18 | 삼성전자주식회사 | 무선통신 시스템에서 옵셋 보상을 고려한 엠엠에스이 채널추정 장치 및 방법 |
US8842789B2 (en) | 2012-11-16 | 2014-09-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Coefficient-specific filtering of initial channel estimates |
US10045032B2 (en) * | 2013-01-24 | 2018-08-07 | Intel Corporation | Efficient region of interest detection |
TWI504169B (zh) | 2013-05-31 | 2015-10-11 | Mstar Semiconductor Inc | 加速等化收斂速度的接收裝置與方法 |
US9071482B2 (en) | 2013-09-27 | 2015-06-30 | Telefonaktiebolaget L M Ericsson (Publ) | Power estimation for wireless communication devices in code division multiple access systems technical field |
US9219629B1 (en) * | 2014-08-27 | 2015-12-22 | Zenith Electronics L.L.C. | Adaptive low complexity channel estimation for mobile OFDM systems |
US9712345B2 (en) * | 2015-04-06 | 2017-07-18 | Samsung Electronics Co., Ltd | Communication device and method of controlling same |
US11146422B1 (en) | 2020-07-29 | 2021-10-12 | U-Blox Ag | Method and system for adjusting the bandwidth of a frequency domain smoothing filter for channel tracking loop in an OFDM communication system |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5574747A (en) * | 1995-01-04 | 1996-11-12 | Interdigital Technology Corporation | Spread spectrum adaptive power control system and method |
KR100219643B1 (ko) * | 1997-06-26 | 1999-09-01 | 윤종용 | 동일채널 간섭 검출기와 그 구동방법 |
JP3913879B2 (ja) * | 1998-02-03 | 2007-05-09 | 富士通株式会社 | 移動速度に基づく通信制御装置および方法 |
US6452917B1 (en) * | 1999-04-08 | 2002-09-17 | Qualcomm Incorporated | Channel estimation in a CDMA wireless communication system |
US6493329B1 (en) * | 1999-08-23 | 2002-12-10 | Qualcomm Incorporated | Adaptive channel estimation in a wireless communication system |
US6647055B2 (en) * | 2000-08-31 | 2003-11-11 | Wen-Yi Kuo | Adaptive channel estimation using continuous pilot signal based on doppler period |
KR100630112B1 (ko) * | 2002-07-09 | 2006-09-27 | 삼성전자주식회사 | 이동통신시스템의 적응형 채널 추정장치 및 방법 |
US7454209B2 (en) * | 2002-09-05 | 2008-11-18 | Qualcomm Incorporated | Adapting operation of a communication filter based on mobile unit velocity |
EP1649654B1 (en) * | 2003-07-25 | 2012-12-05 | Panasonic Corporation | Apparatus and method for multicarrier transmission/reception with transmission quality evaluation |
DE10345959B4 (de) * | 2003-10-02 | 2005-12-15 | Infineon Technologies Ag | Betriebssituationsabhängige Ermittlung und Selektion der Übertragungspfade für die Einrichtung von Rake-Fingern von Rake-Empfängereinheiten in Mobilkommunikations-Endgeräten |
DE10350362B4 (de) * | 2003-10-29 | 2008-06-19 | Infineon Technologies Ag | Verfahren zum Vorhersagen eines Kanalkoeffizienten |
US7257171B2 (en) * | 2005-04-04 | 2007-08-14 | Motorola, Inc. | Method and apparatus for reference symbol aided channel estimation |
-
2004
- 2004-12-09 US US11/007,998 patent/US20060128326A1/en not_active Abandoned
-
2005
- 2005-11-30 WO PCT/US2005/043121 patent/WO2006062767A2/en active Application Filing
- 2005-11-30 CA CA002589756A patent/CA2589756A1/en not_active Abandoned
- 2005-11-30 CN CNA2005800404771A patent/CN101065909A/zh active Pending
- 2005-11-30 JP JP2007545513A patent/JP2008523721A/ja not_active Withdrawn
- 2005-11-30 KR KR1020077015678A patent/KR20070086995A/ko not_active Application Discontinuation
- 2005-11-30 MX MX2007006719A patent/MX2007006719A/es unknown
- 2005-11-30 KR KR1020077017834A patent/KR20070087250A/ko not_active Application Discontinuation
- 2005-11-30 EP EP05852407A patent/EP1820282A4/en not_active Withdrawn
- 2005-12-01 TW TW094142384A patent/TW200629937A/zh unknown
-
2007
- 2007-07-05 NO NO20073474A patent/NO20073474L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
MX2007006719A (es) | 2007-07-09 |
EP1820282A2 (en) | 2007-08-22 |
WO2006062767A2 (en) | 2006-06-15 |
JP2008523721A (ja) | 2008-07-03 |
US20060128326A1 (en) | 2006-06-15 |
CN101065909A (zh) | 2007-10-31 |
CA2589756A1 (en) | 2006-06-15 |
EP1820282A4 (en) | 2008-04-02 |
KR20070087250A (ko) | 2007-08-27 |
KR20070086995A (ko) | 2007-08-27 |
WO2006062767A3 (en) | 2006-12-07 |
TW200629937A (en) | 2006-08-16 |
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Legal Events
Date | Code | Title | Description |
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FC2A | Withdrawal, rejection or dismissal of laid open patent application |