CN101611580B - 用于ofdm系统的插值法、信道估计方法和装置 - Google Patents
用于ofdm系统的插值法、信道估计方法和装置 Download PDFInfo
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- CN101611580B CN101611580B CN2007800471900A CN200780047190A CN101611580B CN 101611580 B CN101611580 B CN 101611580B CN 2007800471900 A CN2007800471900 A CN 2007800471900A CN 200780047190 A CN200780047190 A CN 200780047190A CN 101611580 B CN101611580 B CN 101611580B
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- scattered pilot
- ofdm symbol
- pilot
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- scattered
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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
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
- H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
- H04L25/0232—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols by interpolation between sounding signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
-
- 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
-
- 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
- H04L25/0226—Channel estimation using sounding signals sounding signals per se
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Quality & Reliability (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
BER | 硬件资源成本 | |
传统滤波器(wiener) | 1.2545e-004 | 4896位RAM 复杂控制逻辑 |
具有虚拟导频的滤波 器(wiener) | 1.4295e-004 | 432位RAM 简单控制逻辑 |
码率 | 2/3 |
调制 | 16QAM |
SNR | 12.2dB |
信道 | Rayleigh(ETSI) |
FFT长度 | 2K |
字长 | 12bits |
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2007/000208 WO2008089596A1 (en) | 2007-01-19 | 2007-01-19 | Interpolating method for an ofdm system and channel estimation method and apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101611580A CN101611580A (zh) | 2009-12-23 |
CN101611580B true CN101611580B (zh) | 2013-03-13 |
Family
ID=39644081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2007800471900A Active CN101611580B (zh) | 2007-01-19 | 2007-01-19 | 用于ofdm系统的插值法、信道估计方法和装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20100002788A1 (zh) |
EP (1) | EP2127169A1 (zh) |
JP (1) | JP2010517338A (zh) |
KR (1) | KR20100014317A (zh) |
CN (1) | CN101611580B (zh) |
WO (1) | WO2008089596A1 (zh) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8374285B2 (en) * | 2008-05-05 | 2013-02-12 | Texas Instruments Incorporated | System and method for time domain interpolation of signals for channel estimation |
US7970070B2 (en) * | 2008-05-14 | 2011-06-28 | Newport Media, Inc. | Adaptive frequency domain equalization in OFDM based communication system |
FR2938137B1 (fr) * | 2008-10-31 | 2011-04-15 | St Microelectronics Sa | Recepteur avec circuit d'estimation de canal. |
US9762414B2 (en) | 2009-02-04 | 2017-09-12 | Acorn Technologies, Inc. | Least squares channel identification for OFDM Systems |
US8761274B2 (en) | 2009-02-04 | 2014-06-24 | Acorn Technologies, Inc. | Least squares channel identification for OFDM systems |
GB2470767A (en) * | 2009-06-03 | 2010-12-08 | Sony Corp | OFDM channel estimation using pilots and a filter cascade |
CN101808067B (zh) * | 2010-03-04 | 2012-11-14 | 清华大学 | 利用差分数据作为导频的ofdm信号收发方法及其装置 |
KR101609136B1 (ko) * | 2010-04-07 | 2016-04-05 | 삼성전자주식회사 | 무선통신 시스템에서 채널 추정 장치 및 방법 |
US8406343B2 (en) * | 2010-08-25 | 2013-03-26 | Intel Corporation | Methods and systems to resolve cyclic ambiguity of a channel impulse response |
CN101969416B (zh) * | 2010-11-16 | 2013-07-03 | 北京北方烽火科技有限公司 | 一种信道系数估计方法及装置 |
CN102480441B (zh) * | 2010-11-30 | 2014-07-09 | 澜起科技(上海)有限公司 | 信道估计方法及系统 |
GB2489283A (en) * | 2011-03-24 | 2012-09-26 | Sony Corp | OFDM frequency domain channel estimation with virtual scattered pilots created in frequency notches to restore pattern before interpolation |
US8891590B1 (en) * | 2011-09-28 | 2014-11-18 | Marvell International Ltd. | Method and apparatus for processing wireless signals |
US8824527B2 (en) | 2011-11-15 | 2014-09-02 | Acorn Technologies, Inc. | OFDM receiver with time domain channel estimation |
US9154337B2 (en) | 2013-03-15 | 2015-10-06 | Acorn Technologies, Inc. | Non-linear time domain channel estimation in OFDM systems |
US9031123B2 (en) | 2013-03-15 | 2015-05-12 | Acorn Technologies, Inc. | Communication system and method using subspace interference cancellation |
US8897353B2 (en) | 2013-03-15 | 2014-11-25 | Acorn Technologies, Inc. | Block time domain channel estimation in OFDM system |
US20170019136A1 (en) | 2015-07-16 | 2017-01-19 | LGS Innovations LLC | Feed-forward self-interference cancellation |
KR20180064817A (ko) * | 2016-12-06 | 2018-06-15 | 삼성전자주식회사 | 무선 통신 시스템 및 이의 동작 방법 |
RU2658335C1 (ru) * | 2016-12-28 | 2018-06-20 | федеральное государственное автономное образовательное учреждение высшего образования "Московский физико-технический институт (государственный университет)" | Способ совместной оценки канала связи и мягкой демодуляции для COFDM-сигналов и устройство для его реализации |
CN109525521B (zh) * | 2018-11-22 | 2021-03-23 | 南京铁道职业技术学院 | 一种信道估计方法 |
CN110808927B (zh) * | 2019-10-31 | 2021-12-10 | 江苏软仪科技股份有限公司 | 一种估计802.11ax协议2x模式信道系数的方法 |
CN111555990A (zh) * | 2020-04-27 | 2020-08-18 | 上海大学 | 基于长短时记忆残差网络的信道插值估计方法 |
Citations (3)
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CN1605172A (zh) * | 2001-10-17 | 2005-04-06 | 北方电讯网络有限公司 | 用于mimo-ofdm系统的分散导频图案和信道估计方法 |
CN1710894A (zh) * | 2005-07-07 | 2005-12-21 | 上海交通大学 | 高速移动正交频分复用系统的信道估计方法 |
JP2006101019A (ja) * | 2004-09-28 | 2006-04-13 | Matsushita Electric Ind Co Ltd | Ofdm受信装置及びofdm中継装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6952394B1 (en) * | 1999-05-25 | 2005-10-04 | Samsung Electronics Co., Ltd. | Method for transmitting and receiving orthogonal frequency division multiplexing signal and apparatus therefor |
JP2002009726A (ja) * | 2000-06-27 | 2002-01-11 | Hitachi Kokusai Electric Inc | Ofdm方式伝送装置の基準信号再生方法及びその伝送装置 |
JP2004304590A (ja) * | 2003-03-31 | 2004-10-28 | Sony Corp | Ofdm復調装置及び方法 |
US7177297B2 (en) * | 2003-05-12 | 2007-02-13 | Qualcomm Incorporated | Fast frequency hopping with a code division multiplexed pilot in an OFDMA system |
US7305056B2 (en) * | 2003-11-18 | 2007-12-04 | Ibiquity Digital Corporation | Coherent tracking for FM in-band on-channel receivers |
US7394876B2 (en) * | 2004-05-28 | 2008-07-01 | Texas Instruments Incorporated | Enhanced channel estimator, method of enhanced channel estimating and an OFDM receiver employing the same |
JP4557835B2 (ja) * | 2005-08-08 | 2010-10-06 | 三洋電機株式会社 | ダイバーシチ受信装置 |
US8559295B2 (en) * | 2005-08-15 | 2013-10-15 | Motorola Mobility Llc | Method and apparatus for pilot signal transmission |
DE602005010599D1 (de) * | 2005-12-02 | 2008-12-04 | Alcatel Lucent | Mehrträgersignal mit wählbarem Pilotmuster |
KR100794430B1 (ko) * | 2005-12-30 | 2008-01-16 | 포스데이타 주식회사 | 반송파 신호 대 잡음비 측정 장치 및 방법 |
-
2007
- 2007-01-19 EP EP07702139A patent/EP2127169A1/en not_active Withdrawn
- 2007-01-19 JP JP2009545790A patent/JP2010517338A/ja active Pending
- 2007-01-19 KR KR1020097014873A patent/KR20100014317A/ko not_active Application Discontinuation
- 2007-01-19 US US12/448,886 patent/US20100002788A1/en not_active Abandoned
- 2007-01-19 WO PCT/CN2007/000208 patent/WO2008089596A1/en active Application Filing
- 2007-01-19 CN CN2007800471900A patent/CN101611580B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1605172A (zh) * | 2001-10-17 | 2005-04-06 | 北方电讯网络有限公司 | 用于mimo-ofdm系统的分散导频图案和信道估计方法 |
JP2006101019A (ja) * | 2004-09-28 | 2006-04-13 | Matsushita Electric Ind Co Ltd | Ofdm受信装置及びofdm中継装置 |
CN1710894A (zh) * | 2005-07-07 | 2005-12-21 | 上海交通大学 | 高速移动正交频分复用系统的信道估计方法 |
Also Published As
Publication number | Publication date |
---|---|
JP2010517338A (ja) | 2010-05-20 |
KR20100014317A (ko) | 2010-02-10 |
EP2127169A1 (en) | 2009-12-02 |
US20100002788A1 (en) | 2010-01-07 |
WO2008089596A8 (en) | 2008-10-02 |
CN101611580A (zh) | 2009-12-23 |
WO2008089596A1 (en) | 2008-07-31 |
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Owner name: TEYI (CHINA) TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: THOMSON LICENSING SA Effective date: 20140703 |
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Effective date of registration: 20140703 Address after: 100089, Beijing science and technology road, Haidian District, 8, science and technology wealth center A block 8 Patentee after: Special art (China) Technology Co., Ltd. Address before: French Boulogne Patentee before: Thomson Licensing SA |
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Effective date of registration: 20180716 Address after: 100192 Haidian District 9, Beijing science and Technology Fortune Center, No. 8, Xue Qing Road, B. Patentee after: Beijing Thomson Commercial Co., Ltd. Address before: 100089 Haidian District 8, Beijing science and Technology Fortune Center, No. 8, Xue Qing Road, A. Patentee before: Special art (China) Technology Co., Ltd. |