JP2008544626A - マルチキャリア信号を受信するための受信装置 - Google Patents
マルチキャリア信号を受信するための受信装置 Download PDFInfo
- Publication number
- JP2008544626A JP2008544626A JP2008516495A JP2008516495A JP2008544626A JP 2008544626 A JP2008544626 A JP 2008544626A JP 2008516495 A JP2008516495 A JP 2008516495A JP 2008516495 A JP2008516495 A JP 2008516495A JP 2008544626 A JP2008544626 A JP 2008544626A
- Authority
- JP
- Japan
- Prior art keywords
- frequency response
- inter
- channel frequency
- time derivative
- subcarrier
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- H04L27/2655—Synchronisation arrangements
- H04L27/2668—Details of algorithms
- H04L27/2681—Details of algorithms characterised by constraints
- H04L27/2688—Resistance to perturbation, e.g. noise, interference or fading
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
-
- 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
- H04L25/022—Channel estimation of frequency 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
- H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
-
- 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
- H04L27/2655—Synchronisation arrangements
- H04L27/2662—Symbol synchronisation
- H04L27/2665—Fine synchronisation, e.g. by positioning the FFT window
-
- 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
- H04L27/2655—Synchronisation arrangements
- H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
- H04L27/2691—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation involving interference determination or cancellation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/38—Demodulator circuits; Receiver circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Quality & Reliability (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Noise Elimination (AREA)
Abstract
Description
Claims (8)
- 符号が変調されている複数のサブキャリアを備えるマルチキャリア信号を、受信するための受信装置であって、
サブキャリア依存のチャンネル周波数応答を推定し、前記符号内の循環シフトに基づいてキャリア間干渉拡散を決定するための推定ユニットと、
推定された前記チャンネル周波数応答と決定された前記キャリア間干渉拡散とに少なくとも基づき、受信された前記マルチキャリア信号に含まれるキャリア間干渉を、少なくともほぼ相殺するためのイコライザユニットと、
を備えることを特徴とする受信装置。 - 前記推定ユニットは、前記サブキャリアに対する前記チャンネル周波数応答の0次時間微分と、前記サブキャリアに対する前記チャンネル周波数応答の少なくとも1次時間微分とを、1次またはより高次の近似値に従って決定して、前記チャンネル周波数応答を推定し、
前記推定ユニットは、前記キャリア間干渉拡散を、並列のサブキャリアに対する固定されたキャリア間干渉拡散と、前記循環シフトとに基づいて決定し、
前記イコライザユニットは、前記符号に適用された前記0次時間微分と、前記1次時間微分の後に前記符号に適用された前記キャリア間干渉拡散との和に基づき、信号出力を決定する、ことを特徴とする請求項1に記載の受信装置。 - 前記推定ユニットは、前記サブキャリアに対する前記チャンネル周波数応答の前記0次時間微分を、前記チャンネル周波数応答の前記0次時間微分の行列として決定し、前記サブキャリアに対する前記チャンネル周波数応答の前記1次時間微分を、前記チャンネル周波数応答の前記1次時間微分の行列として決定し、前記固定のキャリア間干渉拡散を、前記固定のキャリア間干渉拡散の行列として決定し、前記循環シフトを、シフト変数および前記サブキャリアに依存する複素数値関数として決定し、
前記推定ユニットは、前記キャリア間干渉拡散の行列を、前記循環シフト関数と前記固定のキャリア間干渉拡散行列とに基づいて決定し、
前記イコライザユニットは、前記信号出力のベクトルを、前記チャンネル周波数応答の前記0次時間微分の前記行列と、前記サブキャリアの前記シンボルのベクトルとの積、および、前記キャリア間干渉拡散の前記行列と、前記チャンネル周波数応答の前記1次時間微分の前記行列と、前記サブキャリアの前記符号の前記ベクトルとの積、の和として決定する、ことを特徴とする請求項1に記載の受信装置。 - 前記推定ユニットは、前記キャリア間干渉拡散行列を、特定の行および特定の列にある要素が、前記固定の拡散行列の前記特定の行および前記特定の列にある要素と、前記循環シフト関数の複素数値との積として計算されるように決定し、
前記循環シフト関数の前記複素数値は、虚数単位と、ルドルフ数の2倍と、前記シフト変数と、前記行番号および前記列番号の差である分子、および、前記キャリア間拡散行列の列の合計数またはサブキャリアの合計数である分母から成る分数値と、の積の複素指数関数として決定される、ことを特徴とする請求項3に記載の受信装置。 - 前記推定ユニットは、前記チャンネル周波数応答の前記1次時間微分を、サブキャリア依存の1次時間微分として推定する、ことを特徴とする請求項2に記載の受信装置。
- 前記推定ユニットは、特定の符号に対する前記チャンネル周波数応答の前記1次時間微分を、時間座標に関して、前記特定の符号の次の符号に対する前記チャンネル周波数応答の0次時間微分と、前記時間座標に関して、前記特定の符号の前の符号に対する前記チャンネル周波数応答の0次時間微分と、の差として推定する、ことを特徴とする請求項5に記載の受信装置。
- 前記イコライザユニットは、前記サブキャリアのそれぞれの前記キャリア間干渉を、多くとも隣接する所定数のサブキャリアからのキャリア間干渉に基づき、少なくともほぼ相殺する、ことを特徴とする請求項1に記載の受信装置。
- マルチキャリア信号を、送信装置から受信装置に送信するための送信システムであって、
前記マルチキャリア信号は、サブキャリアを含み、
前記送信装置は、前記サブキャリアに符号を変調し、
前記受信装置は、請求項1乃至7のいずれかに従って構成されている、
ことを特徴とする送信システム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05105282 | 2005-06-16 | ||
PCT/IB2006/051940 WO2006134578A1 (en) | 2005-06-16 | 2006-06-16 | Receiver apparatus for receiving a multicarrier signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008544626A true JP2008544626A (ja) | 2008-12-04 |
JP4472771B2 JP4472771B2 (ja) | 2010-06-02 |
Family
ID=37075197
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008516466A Withdrawn JP2008544622A (ja) | 2005-06-16 | 2006-06-09 | Csiに基づくllrメトリックを有するofdm受信器 |
JP2008516495A Expired - Fee Related JP4472771B2 (ja) | 2005-06-16 | 2006-06-16 | マルチキャリア信号を受信するための受信装置 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008516466A Withdrawn JP2008544622A (ja) | 2005-06-16 | 2006-06-09 | Csiに基づくllrメトリックを有するofdm受信器 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8345809B2 (ja) |
EP (1) | EP1894378B1 (ja) |
JP (2) | JP2008544622A (ja) |
KR (2) | KR20080021658A (ja) |
CN (2) | CN101199173A (ja) |
WO (2) | WO2006134527A1 (ja) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7876845B2 (en) * | 2005-06-22 | 2011-01-25 | Eices Research, Inc. | Wireless communications systems and/or methods providing low interference, high privacy and/or cognitive flexibility |
US8670493B2 (en) | 2005-06-22 | 2014-03-11 | Eices Research, Inc. | Systems and/or methods of increased privacy wireless communications |
US8233554B2 (en) | 2010-03-29 | 2012-07-31 | Eices Research, Inc. | Increased capacity communications for OFDM-based wireless communications systems/methods/devices |
USRE47633E1 (en) | 2005-06-22 | 2019-10-01 | Odyssey Wireless Inc. | Systems/methods of conducting a financial transaction using a smartphone |
US8462860B2 (en) * | 2008-07-07 | 2013-06-11 | Eices Research, Inc. | Increased capacity communications systems, methods and/or devices |
US8418023B2 (en) | 2007-05-01 | 2013-04-09 | The Texas A&M University System | Low density parity check decoder for irregular LDPC codes |
CN101132388B (zh) * | 2007-09-18 | 2013-01-09 | 沖电气(新加坡)技术中心 | 利用信道状态信息辅助接收编码信号的接收方法及装置 |
JP2009130486A (ja) * | 2007-11-21 | 2009-06-11 | Sharp Corp | 無線通信システムおよび受信装置 |
US9374746B1 (en) | 2008-07-07 | 2016-06-21 | Odyssey Wireless, Inc. | Systems/methods of spatial multiplexing |
US7664190B1 (en) * | 2008-08-04 | 2010-02-16 | Mediatek Inc. | Multi-carrier receiver with dynamic power adjustment and method for dynamically adjusting the power consumption of a multi-carrier receiver |
EP2230791A1 (en) * | 2009-03-20 | 2010-09-22 | Nxp B.V. | Signal processor, receiver and signal processing method |
US9806790B2 (en) | 2010-03-29 | 2017-10-31 | Odyssey Wireless, Inc. | Systems/methods of spectrally efficient communications |
US8693120B2 (en) | 2011-03-17 | 2014-04-08 | Lsi Corporation | Systems and methods for sample averaging in data processing |
US8854753B2 (en) | 2011-03-17 | 2014-10-07 | Lsi Corporation | Systems and methods for auto scaling in a data processing system |
US8887034B2 (en) | 2011-04-15 | 2014-11-11 | Lsi Corporation | Systems and methods for short media defect detection |
US8830613B2 (en) | 2011-07-19 | 2014-09-09 | Lsi Corporation | Storage media inter-track interference cancellation |
US8879182B2 (en) | 2011-07-19 | 2014-11-04 | Lsi Corporation | Storage media inter-track interference cancellation |
US8854754B2 (en) | 2011-08-19 | 2014-10-07 | Lsi Corporation | Systems and methods for local iteration adjustment |
US9026572B2 (en) | 2011-08-29 | 2015-05-05 | Lsi Corporation | Systems and methods for anti-causal noise predictive filtering in a data channel |
US8850276B2 (en) | 2011-09-22 | 2014-09-30 | Lsi Corporation | Systems and methods for efficient data shuffling in a data processing system |
US8862960B2 (en) | 2011-10-10 | 2014-10-14 | Lsi Corporation | Systems and methods for parity shared data encoding |
US8675769B1 (en) * | 2012-06-20 | 2014-03-18 | MagnaCom Ltd. | Constellation map optimization for highly spectrally efficient communications |
JP5977666B2 (ja) * | 2012-12-26 | 2016-08-24 | パナソニック株式会社 | 受信装置及び周波数選択性妨害訂正方法 |
KR102343680B1 (ko) * | 2015-09-10 | 2021-12-28 | 삼성전자주식회사 | 비직교 파형을 가지는 멀티-캐리어 시스템에서 신호를 송/수신하는 장치 및 방법 |
CN105577233B (zh) * | 2015-12-09 | 2017-11-14 | 余姚市吉佳电器有限公司 | 一种基于循环定位的lte中继系统 |
CN105490723B (zh) * | 2015-12-09 | 2019-03-01 | 谢红丹 | 一种基于循环定位扩频码的lte中继系统 |
EP3276900B1 (en) * | 2016-07-29 | 2020-02-19 | Nxp B.V. | A receiver circuit |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001063870A1 (en) | 2000-02-22 | 2001-08-30 | Koninklijke Philips Electronics N.V. | Multicarrier receiver with channel estimator |
EP1317831A2 (de) * | 2000-09-12 | 2003-06-11 | Siemens Aktiengesellschaft | Verfahren und ofdm-empfänger zum verringern des einflusses harmonischer störungen auf ofdm-übertragungssysteme |
GB2370952B (en) * | 2001-01-05 | 2003-04-09 | British Broadcasting Corp | Improvements in channel state measurement and in discriminating digital values from a received signal suitable for use with OFDM signals |
EP1364507A2 (en) | 2001-02-22 | 2003-11-26 | Koninklijke Philips Electronics N.V. | Multicarrier transmission system with reduced complexity leakage matrix multiplication |
US7103116B2 (en) * | 2001-09-24 | 2006-09-05 | Atheros Communications, Inc. | Detection of a false detection of a communication packet |
US20040005010A1 (en) * | 2002-07-05 | 2004-01-08 | National University Of Singapore | Channel estimator and equalizer for OFDM systems |
DE60317195T2 (de) * | 2003-09-08 | 2008-08-07 | Abb Research Ltd. | Datenverschlüsselung in der physikalischen Schicht eines Datenübertragungssystems |
US7505523B1 (en) * | 2004-08-12 | 2009-03-17 | Marvell International Ltd. | Integer frequency offset estimation based on the maximum likelihood principal in OFDM systems |
-
2006
- 2006-06-09 JP JP2008516466A patent/JP2008544622A/ja not_active Withdrawn
- 2006-06-09 CN CNA2006800212314A patent/CN101199173A/zh active Pending
- 2006-06-09 WO PCT/IB2006/051839 patent/WO2006134527A1/en not_active Application Discontinuation
- 2006-06-09 KR KR1020077029048A patent/KR20080021658A/ko not_active Application Discontinuation
- 2006-06-16 JP JP2008516495A patent/JP4472771B2/ja not_active Expired - Fee Related
- 2006-06-16 US US11/917,043 patent/US8345809B2/en not_active Expired - Fee Related
- 2006-06-16 KR KR1020087001146A patent/KR100932320B1/ko not_active IP Right Cessation
- 2006-06-16 EP EP06765770A patent/EP1894378B1/en active Active
- 2006-06-16 CN CN2006800217430A patent/CN101199177B/zh not_active Expired - Fee Related
- 2006-06-16 WO PCT/IB2006/051940 patent/WO2006134578A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
EP1894378B1 (en) | 2012-08-15 |
US8345809B2 (en) | 2013-01-01 |
JP4472771B2 (ja) | 2010-06-02 |
CN101199177B (zh) | 2013-04-24 |
KR20080021786A (ko) | 2008-03-07 |
KR20080021658A (ko) | 2008-03-07 |
JP2008544622A (ja) | 2008-12-04 |
CN101199173A (zh) | 2008-06-11 |
KR100932320B1 (ko) | 2009-12-16 |
CN101199177A (zh) | 2008-06-11 |
US20120039379A1 (en) | 2012-02-16 |
EP1894378A1 (en) | 2008-03-05 |
WO2006134527A1 (en) | 2006-12-21 |
WO2006134578A1 (en) | 2006-12-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4472771B2 (ja) | マルチキャリア信号を受信するための受信装置 | |
US7457231B2 (en) | Staggered pilot transmission for channel estimation and time tracking | |
US7668269B2 (en) | Systems, methods, and apparatus for phase noise mitigation | |
US7649830B2 (en) | Hybrid type channel estimation method and system for mobile environment | |
US8081690B2 (en) | OFDM channel estimation | |
US8374266B2 (en) | Iterative channel estimation method and apparatus for ICI cancellation in multi-carrier | |
US20040218519A1 (en) | Apparatus and method for estimation of channel state information in OFDM receivers | |
KR100347966B1 (ko) | 멀티캐리어 시스템을 위한 미분 코딩 및 캐리어 복원 | |
CN101257470B (zh) | 正交频分复用系统中利用插入导频抑制相位噪声的方法 | |
US9912497B2 (en) | Signal detection in a communication system | |
KR101635072B1 (ko) | Ofdm 송신 시스템에서 위상 잡음을 추정하기 위한 방법 및 장치 | |
KR101390317B1 (ko) | 직교 주파수 분할 다중화 시스템에서 채널 임펄스 응답의추정 오류를 보상하기 위한 장치 및 방법 | |
Hao | Decision feedback frequency offset estimation and tracking for general ICI self-cancellation based OFDM systems | |
JP3558879B2 (ja) | ディジタル通信装置 | |
KR101004821B1 (ko) | 동일 채널 간섭 추정 및 복호 성능 향상 기능을 갖는 ofdm 수신기 | |
KR101294283B1 (ko) | Ofdm 시스템의 상호상관 기반 채널 추정 방법 및 그 장치 | |
Seo et al. | DFT-based PSA channel estimation using linear prediction for OFDM systems with virtual carriers | |
JP2005191662A (ja) | Ofdm信号の復調方法 | |
WO2005048497A2 (en) | Method for estimating time varying channels in ofdm (orthogonal frequency division multiplex) multiple transmit antenna system | |
KR100986166B1 (ko) | Dft를 이용하여 채널을 추정하는 dvb 시스템과 dvb 시스템의 채널 추정 방법 | |
Arslan | Channel frequency response estimation under the effect of RF impairements in OFDM based wireless systems | |
Hajjar | Synchronization algorithms for OFDM systems (IEEE802. 11a, DVB-T): analysis, simulation, optimization and implementation aspects | |
KR101128143B1 (ko) | 채널 추정에 사용되는 데이터의 오버헤드를 줄이기 위한 통신 시스템 및 방법 | |
El Hajjar | Synchronization Algorithms for OFDM Systems (IEEE802. 11a, DVB-T): Analysis, Simulation, Optimization and Implementation Aspects | |
Kim et al. | An efficient channel tracking method for OFDM based high mobility wireless multimedia system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20091016 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100113 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20100205 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20100303 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130312 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140312 Year of fee payment: 4 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |