BRPI0608279A2 - seleção de um parámetro de limite para estimação de canal - Google Patents
seleção de um parámetro de limite para estimação de canalInfo
- Publication number
- BRPI0608279A2 BRPI0608279A2 BRPI0608279-3A BRPI0608279A BRPI0608279A2 BR PI0608279 A2 BRPI0608279 A2 BR PI0608279A2 BR PI0608279 A BRPI0608279 A BR PI0608279A BR PI0608279 A2 BRPI0608279 A2 BR PI0608279A2
- Authority
- BR
- Brazil
- Prior art keywords
- channel
- threshold parameter
- threshold
- channel leads
- cire
- 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
- H04L25/0204—Channel estimation of multiple channels
-
- 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
-
- 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
- H04L25/0222—Estimation of channel variability, e.g. coherence bandwidth, coherence time, fading frequency
-
- 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
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/025—Channel estimation channel estimation algorithms using least-mean-square [LMS] method
-
- 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
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0256—Channel estimation using minimum mean square error criteria
-
- 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
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0258—Channel estimation using zero-forcing criteria
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Circuits Of Receivers In General (AREA)
- Error Detection And Correction (AREA)
Abstract
SELEçãO DE UM PARAMêTRO DE LIMITE PARA ESTIMAçãO DE CANAL. São descritas técnicas para derivar uma estimativa de canal de alta qualidade. Uma primeira estimativa de resposta ao impulso de canal (CIRE) com múltiplas derivações de canal é derivada, por exemplo, pela filtragem de CIREs iniciais obtidas de um piloto recebido. Um valor de parâmetro de limite é selecionado com base em pelo menos um critério, que pode referir-se ao perfil do canal, à SNR operacional, ao número de derivações de canal e assim por diante. Uma segunda CIRE é derivada zerando-se as derivações de canal selecionadas das derivações de canal na primeira CIRE com base no valor de parâmetro de limite. A energia média das derivações de canal pode ser determinada, um limite pode ser derivado com base na energia média e no valor de parâmetro de limite, e as derivações de canal com energia menor que o limite podem ser zeradas. Uma memória pode armazenar valores de parâmetro de limite para diferentes cenários operacionais, e um valor armazenado pode ser selecionado para uso com base no cenário operacional atual.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US65223605P | 2005-02-11 | 2005-02-11 | |
US11/351,683 US8761312B2 (en) | 2005-02-11 | 2006-02-10 | Selection of a thresholding parameter for channel estimation |
PCT/US2006/005185 WO2006086786A1 (en) | 2005-02-11 | 2006-02-13 | Selection of a thresholding parameter for channel estimation |
Publications (1)
Publication Number | Publication Date |
---|---|
BRPI0608279A2 true BRPI0608279A2 (pt) | 2009-12-15 |
Family
ID=36501922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0608279-3A BRPI0608279A2 (pt) | 2005-02-11 | 2006-02-13 | seleção de um parámetro de limite para estimação de canal |
Country Status (9)
Country | Link |
---|---|
US (1) | US8761312B2 (pt) |
EP (1) | EP1847085A1 (pt) |
JP (2) | JP4842974B2 (pt) |
KR (1) | KR100943227B1 (pt) |
CN (1) | CN101120560B (pt) |
BR (1) | BRPI0608279A2 (pt) |
CA (1) | CA2597599C (pt) |
RU (1) | RU2379846C2 (pt) |
WO (1) | WO2006086786A1 (pt) |
Families Citing this family (24)
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GB2439366A (en) * | 2006-06-20 | 2007-12-27 | Nec Technologies | Resource block scheduling in communication networks |
US8363536B2 (en) * | 2006-08-28 | 2013-01-29 | Qualcomm Incorporated | OFDM channel estimation |
DE102006056158B4 (de) * | 2006-11-28 | 2011-11-17 | Infineon Technologies Ag | Kanalschätzung für OFDM Systeme |
US8630256B2 (en) | 2006-12-05 | 2014-01-14 | Qualcomm Incorporated | Method and system for reducing backhaul utilization during base station handoff in wireless networks |
WO2008082120A1 (en) * | 2006-12-31 | 2008-07-10 | Posdata Co., Ltd. | Apparatus and method for detecting the ack/nack signal in a wireless communication system |
KR100865937B1 (ko) * | 2006-12-31 | 2008-10-29 | 포스데이타 주식회사 | 무선통신 시스템에서의 ack/nack 정보 탐지 장치 및방법 |
US8300742B1 (en) * | 2007-11-21 | 2012-10-30 | Bromberg Matthew C | Systems and methods for channel based beamforming for stacked carrier multiple access |
JP2009141514A (ja) * | 2007-12-04 | 2009-06-25 | Nippon Telegr & Teleph Corp <Ntt> | チャネル推定装置及び無線通信システム |
KR101455273B1 (ko) * | 2008-07-01 | 2014-10-27 | 삼성전자주식회사 | 이동통신 시스템의 채널 추정 장치 및 방법 |
US8634769B2 (en) * | 2008-10-23 | 2014-01-21 | Qualcomm Incorporated | Data reception with interference cancellation in a relay communication network |
US9031053B2 (en) * | 2008-10-23 | 2015-05-12 | Qualcomm Incorporated | Method and apparatus for communicating in a relay communication network |
US8243836B2 (en) * | 2008-12-17 | 2012-08-14 | Electronics And Telecommunications Research Institute | Channel estimation apparatus and method in mobile communication system having dispersed pilot |
US8290462B2 (en) | 2009-02-04 | 2012-10-16 | Agere Systems Llc | Receiver and method for estimating a plurality of estimated transfer functions corresponding to wireless channels in a multiple-input system |
CN101895489B (zh) * | 2009-05-20 | 2013-05-08 | 中兴通讯股份有限公司 | 一种信道估计的滤波方法及滤波装置 |
CN102131277B (zh) * | 2010-01-19 | 2014-11-05 | 中兴通讯股份有限公司 | 一种td-scdma系统多业务并行下的终端信道估计方法和系统 |
WO2011140719A1 (en) * | 2010-05-14 | 2011-11-17 | Zte Wistron Telecom Ab | Method and apparatus for channel estimation in lte |
US8744082B2 (en) | 2010-11-03 | 2014-06-03 | Futurewei Technologies, Inc. | System and method for securing wireless communications |
US8842750B2 (en) * | 2010-12-21 | 2014-09-23 | Intel Corporation | Channel estimation for DVB-T2 demodulation using an adaptive prediction technique |
CN103999420B (zh) * | 2011-12-31 | 2017-11-14 | 中兴通讯股份有限公司 | 一种峰值门限fss检测方法、系统及接收机 |
US9614700B2 (en) * | 2013-01-02 | 2017-04-04 | Qualcomm Incorporated | Techniques for channel estimation in millimeter-wave communication systems |
US9240864B2 (en) * | 2013-09-12 | 2016-01-19 | Qualcomm Incorporated | Blind CRS detection |
KR101850621B1 (ko) * | 2016-11-02 | 2018-04-20 | 중앙대학교 산학협력단 | 협력 스펙트럼 센싱 방법 및 그 장치 |
CN106507364B (zh) * | 2016-11-23 | 2019-09-27 | 广东工业大学 | 一种避免室内无线通信恶意攻击的方法及系统 |
US10616005B1 (en) * | 2018-11-28 | 2020-04-07 | Samsung Electronics Co., Ltd. | Robust noise power estimation |
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SU1225023A2 (ru) | 1984-11-06 | 1986-04-15 | Войсковая Часть 25840 | Устройство дл контрол каналов св зи по отношению сигнал/помеха |
US5251233A (en) * | 1990-12-20 | 1993-10-05 | Motorola, Inc. | Apparatus and method for equalizing a corrupted signal in a receiver |
JP2725493B2 (ja) * | 1991-08-27 | 1998-03-11 | 日本電気株式会社 | 空冷式アルゴンイオンレーザ管 |
AU685129B2 (en) | 1993-06-07 | 1998-01-15 | Alcatel Mobile Phones | Communication system with signalling packet including a reference signal modulated in accordance with time-dependent law |
JP3102221B2 (ja) * | 1993-09-10 | 2000-10-23 | 三菱電機株式会社 | 適応等化器および適応ダイバーシチ等化器 |
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JP2963895B1 (ja) * | 1998-07-06 | 1999-10-18 | 株式会社次世代デジタルテレビジョン放送システム研究所 | 直交周波数分割多重方式受信装置 |
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RU2157053C1 (ru) | 1999-01-26 | 2000-09-27 | Государственное унитарное предприятие Воронежский научно-исследовательский институт связи | Устройство для приема стартстопных сообщений |
FI113721B (fi) | 1999-12-15 | 2004-05-31 | Nokia Corp | Menetelmä ja vastaanotin kanavaestimaatin iteratiiviseksi parantamiseksi |
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US20020176485A1 (en) * | 2001-04-03 | 2002-11-28 | Hudson John E. | Multi-cast communication system and method of estimating channel impulse responses therein |
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KR100943272B1 (ko) * | 2003-02-18 | 2010-02-23 | 삼성전자주식회사 | 디지털 통신 시스템의 채널 추정 장치 및 그의 채널 추정방법 |
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-
2006
- 2006-02-10 US US11/351,683 patent/US8761312B2/en not_active Expired - Fee Related
- 2006-02-13 EP EP06735038A patent/EP1847085A1/en not_active Withdrawn
- 2006-02-13 WO PCT/US2006/005185 patent/WO2006086786A1/en active Application Filing
- 2006-02-13 KR KR1020077020709A patent/KR100943227B1/ko not_active IP Right Cessation
- 2006-02-13 RU RU2007133813/09A patent/RU2379846C2/ru not_active IP Right Cessation
- 2006-02-13 BR BRPI0608279-3A patent/BRPI0608279A2/pt not_active IP Right Cessation
- 2006-02-13 CA CA2597599A patent/CA2597599C/en not_active Expired - Fee Related
- 2006-02-13 CN CN200680004711XA patent/CN101120560B/zh not_active Expired - Fee Related
- 2006-02-13 JP JP2007555342A patent/JP4842974B2/ja not_active Expired - Fee Related
-
2011
- 2011-08-08 JP JP2011173109A patent/JP5329614B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2597599C (en) | 2012-01-24 |
RU2379846C2 (ru) | 2010-01-20 |
JP5329614B2 (ja) | 2013-10-30 |
WO2006086786A1 (en) | 2006-08-17 |
JP2008538263A (ja) | 2008-10-16 |
JP4842974B2 (ja) | 2011-12-21 |
CN101120560B (zh) | 2010-11-03 |
CN101120560A (zh) | 2008-02-06 |
US20060227748A1 (en) | 2006-10-12 |
EP1847085A1 (en) | 2007-10-24 |
KR20070108906A (ko) | 2007-11-13 |
RU2007133813A (ru) | 2009-03-20 |
KR100943227B1 (ko) | 2010-02-18 |
CA2597599A1 (en) | 2006-08-17 |
US8761312B2 (en) | 2014-06-24 |
JP2012010377A (ja) | 2012-01-12 |
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Legal Events
Date | Code | Title | Description |
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B08F | Application fees: application dismissed [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 9A ANUIDADE. |
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B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2308 DE 31/03/2015. |