DE60224343D1 - OFDM- Sender und Empfänger - Google Patents

OFDM- Sender und Empfänger

Info

Publication number
DE60224343D1
DE60224343D1 DE60224343T DE60224343T DE60224343D1 DE 60224343 D1 DE60224343 D1 DE 60224343D1 DE 60224343 T DE60224343 T DE 60224343T DE 60224343 T DE60224343 T DE 60224343T DE 60224343 D1 DE60224343 D1 DE 60224343D1
Authority
DE
Germany
Prior art keywords
receiver
ofdm transmitter
ofdm
transmitter
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.)
Expired - Fee Related
Application number
DE60224343T
Other languages
English (en)
Other versions
DE60224343T2 (de
Inventor
Kazumi Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Publication of DE60224343D1 publication Critical patent/DE60224343D1/de
Application granted granted Critical
Publication of DE60224343T2 publication Critical patent/DE60224343T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • 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
    • H04L25/022—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
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2646—Arrangements specific to the transmitter only using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
    • 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
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H04L5/0046—Determination of how many bits are transmitted on different sub-channels
    • 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
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • 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
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0017—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0019—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy in which mode-switching is based on a statistical approach
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
DE60224343T 2001-09-28 2002-09-25 OFDM- Sender und Empfänger Expired - Fee Related DE60224343T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001303416 2001-09-28
JP2001303416 2001-09-28

Publications (2)

Publication Number Publication Date
DE60224343D1 true DE60224343D1 (de) 2008-02-14
DE60224343T2 DE60224343T2 (de) 2009-01-02

Family

ID=19123505

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60224343T Expired - Fee Related DE60224343T2 (de) 2001-09-28 2002-09-25 OFDM- Sender und Empfänger

Country Status (4)

Country Link
US (2) US7280504B2 (de)
EP (1) EP1298876B1 (de)
CN (1) CN1284317C (de)
DE (1) DE60224343T2 (de)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7363039B2 (en) 2002-08-08 2008-04-22 Qualcomm Incorporated Method of creating and utilizing diversity in multiple carrier communication system
US6961595B2 (en) * 2002-08-08 2005-11-01 Flarion Technologies, Inc. Methods and apparatus for operating mobile nodes in multiple states
JP4109556B2 (ja) * 2003-01-31 2008-07-02 松下電器産業株式会社 Ｏｆｄｍ信号の衝突位置検出装置、ｏｆｄｍ受信装置及びｏｆｄｍ信号の衝突位置検出方法及びｏｆｄｍ受信方法
MXPA05008892A (es) * 2003-02-19 2006-05-25 Qualcomm Flarion Tech Codificacion de superposicion controlada en sistemas de comunicacion de usuarios multiples.
US8593932B2 (en) * 2003-05-16 2013-11-26 Qualcomm Incorporated Efficient signal transmission methods and apparatus using a shared transmission resource
US20050025040A1 (en) * 2003-07-29 2005-02-03 Nokia Corporation Method and apparatus providing adaptive learning in an orthogonal frequency division multiplex communication system
PL3402092T3 (pl) * 2003-08-06 2022-02-21 Optis Wireless Technology, Llc Urządzenie komunikacji bezprzewodowej i sposób komunikacji bezprzewodowej
US7925291B2 (en) 2003-08-13 2011-04-12 Qualcomm Incorporated User specific downlink power control channel Q-bit
EP1667348B1 (de) 2003-08-19 2017-07-26 Panasonic Intellectual Property Corporation of America Funksendevorrichtung und funksendeverfahren
US7272109B2 (en) * 2003-08-27 2007-09-18 Conexant Systems, Inc. Modified OFDM subcarrier profile
JP2005106684A (ja) * 2003-09-30 2005-04-21 Konica Minolta Medical & Graphic Inc 放射線画像変換パネル及びその製造方法
US20070121738A1 (en) * 2003-09-30 2007-05-31 Matsushita Electric Industrial Co., Ltd. Transmission apparatus and peak suppression method
EP1533917A1 (de) * 2003-11-18 2005-05-25 Mitsubishi Electric Information Technology Centre Europe B.V. Antennendiversitätsschalter für ein Empfangssystem und dieses benutzendes Schalterverfahren
EP1533916A1 (de) * 2003-11-18 2005-05-25 Mitsubishi Electric Information Technology Centre Europe B.V. Diversität-Schalt-Kombinator
KR20050122665A (ko) * 2004-06-25 2005-12-29 삼성전자주식회사 다중 셀 구조를 갖는 이동통신 시스템에서 섹터다이버시티를 제공하는 직교 주파수 분할 다중 심벌 전송방법 및 송수신 장치
US20070076808A1 (en) 2004-08-12 2007-04-05 Manish Bhardwaj Method and apparatus to track gain variation in orthogonal frequency division multiplexing (OFDM) systems
JP4035527B2 (ja) * 2004-08-31 2008-01-23 株式会社東芝 通信端末装置及び通信方法
JP4403974B2 (ja) * 2005-01-21 2010-01-27 株式会社日立製作所 適応変調方法並びに符号化率制御方法
EP1750404B1 (de) * 2005-08-01 2008-07-23 NTT DoCoMo, Inc. Verfahren zum Informationsweiterleiten mittels eines ersten Kanals zu einem zweiten Kanal und Funkrelaisvorrichtung
JP4752523B2 (ja) * 2006-01-26 2011-08-17 ソニー株式会社 無線通信装置及び方法
KR20080020143A (ko) * 2006-08-30 2008-03-05 삼성전자주식회사 직교 주파수 분할 다중 시스템에서 데이터 채널을송수신하는 장치 및 방법
CN101637051B (zh) * 2007-01-11 2012-10-31 高通股份有限公司 在无线通信系统中使用dtx和drx
CN101779428A (zh) * 2007-08-14 2010-07-14 株式会社Ntt都科摩 接收装置和数据取得方法
US8089894B2 (en) * 2008-05-19 2012-01-03 Qualcomm Incorporated Methods and systems for adaptive effective CINR reporting in a wireless communication system
GB2460459B (en) * 2008-05-30 2012-07-11 Sony Corp Data processing apparatus and method
JP4870730B2 (ja) * 2008-07-30 2012-02-08 京セラ株式会社 無線基地局
JP5254302B2 (ja) * 2010-11-19 2013-08-07 株式会社東芝 無線通信装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE503548C2 (sv) 1993-10-01 1996-07-01 Telia Ab Anordning i OFDM fleranvändarsystem
US6128276A (en) * 1997-02-24 2000-10-03 Radix Wireless, Inc. Stacked-carrier discrete multiple tone communication technology and combinations with code nulling, interference cancellation, retrodirective communication and adaptive antenna arrays
US6175550B1 (en) 1997-04-01 2001-01-16 Lucent Technologies, Inc. Orthogonal frequency division multiplexing system with dynamically scalable operating parameters and method thereof
US6618454B1 (en) * 1998-02-06 2003-09-09 At&T Corp. Diversity coded OFDM for high data-rate communication
ES2185244T3 (es) * 1998-12-03 2003-04-16 Fraunhofer Ges Forschung Aparato y procedimiento para transmitir informacion y aparato y procedimiento para recibir informacion.
AU740804B2 (en) * 1999-07-19 2001-11-15 Nippon Telegraph & Telephone Corporation OFDM packet communication receiver system
US6587526B1 (en) * 1999-10-12 2003-07-01 Lucent Technologies Inc. Apparatus and method for timing synchronization in OFDM-based wireless systems
US6351499B1 (en) * 1999-12-15 2002-02-26 Iospan Wireless, Inc. Method and wireless systems using multiple antennas and adaptive control for maximizing a communication parameter
US6298092B1 (en) * 1999-12-15 2001-10-02 Iospan Wireless, Inc. Methods of controlling communication parameters of wireless systems
US6985434B2 (en) * 2000-09-01 2006-01-10 Nortel Networks Limited Adaptive time diversity and spatial diversity for OFDM
GB2401516A (en) * 2003-04-17 2004-11-10 Univ Southampton Peak-to-average power ratio reduction by subtracting shaped pulses from a baseband signal

Also Published As

Publication number Publication date
EP1298876A1 (de) 2003-04-02
US7280504B2 (en) 2007-10-09
CN1284317C (zh) 2006-11-08
DE60224343T2 (de) 2009-01-02
US20070297321A1 (en) 2007-12-27
EP1298876B1 (de) 2008-01-02
US20030090993A1 (en) 2003-05-15
CN1411179A (zh) 2003-04-16

Similar Documents

Publication Publication Date Title
DE60224343D1 (de) OFDM- Sender und Empfänger
DE60227823D1 (de) Sender und sendesteuerverfahren
DK1317813T3 (da) Multibærermodtager
DE60024225D1 (de) Funksender
DE50203203D1 (de) Sende- und empfangseinheit
DE60307406D1 (de) Packetübertragungssystem und Packetempfangssystem
DE60319722D1 (de) Heim-endgerätevorrichtung und kommunikationssystem
DE60236484D1 (de) Optischer Sender und optisches Übertragungssystem
DE60032108D1 (de) Drahtloser Mikrofon und Sender für drahtlosen Mikrofon
DE602004019262D1 (de) Mehrträgerempfänger
DE60234529D1 (de) Sender und sendesteuerverfahren
DE60235861D1 (de) Sender
DE60212260D1 (de) OFDM-Empfänger
DE60116682D1 (de) Hochfrequenzsender und/oder -empfänger
DE60126114D1 (de) Signalsender und signalempfänger
DE60218089D1 (de) Hochfrequenz-Sender/Empfänger
DE60041502D1 (de) Drahtloser empfänger und zugehöriges kalibrierverfahren
DE60332146D1 (de) Sendervorrichtung und Sendeverfahren
DE60329010D1 (de) Empfängereinrichtung und fernsehempfänger
DE69829835D1 (de) Funksender und Funkempfänger
DE69924795D1 (de) Mehrträgersender und Kommunikationseinrichtung
DE50101948D1 (de) Empfangseinrichtung
DE50008134D1 (de) Funksende- und -empfangsgerät
DE602004015877D1 (de) Vorverzerrer und Sendegerät
DE60218093D1 (de) Positionsgeber und entsprechender Positionsanzeiger

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee