DE602005000640D1 - System und Verfahren zur OFDM-Kommunikation - Google Patents

System und Verfahren zur OFDM-Kommunikation

Info

Publication number
DE602005000640D1
DE602005000640D1 DE602005000640T DE602005000640T DE602005000640D1 DE 602005000640 D1 DE602005000640 D1 DE 602005000640D1 DE 602005000640 T DE602005000640 T DE 602005000640T DE 602005000640 T DE602005000640 T DE 602005000640T DE 602005000640 D1 DE602005000640 D1 DE 602005000640D1
Authority
DE
Germany
Prior art keywords
ofdm communication
ofdm
communication
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.)
Active
Application number
DE602005000640T
Other languages
English (en)
Other versions
DE602005000640T2 (de
Inventor
Noriyuki Maeda
Mamoru Sawahashi
Hiroyuki Atarashi
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.)
NTT Docomo Inc
Original Assignee
NTT Docomo Inc
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 NTT Docomo Inc filed Critical NTT Docomo Inc
Publication of DE602005000640D1 publication Critical patent/DE602005000640D1/de
Application granted granted Critical
Publication of DE602005000640T2 publication Critical patent/DE602005000640T2/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H04J13/18—Allocation of orthogonal codes
    • H04J13/20—Allocation of orthogonal codes having an orthogonal variable spreading factor [OVSF]
    • 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
    • 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
    • H04L27/2613—Structure of the reference 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2649—Demodulators
    • 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
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/023—Multiplexing of multicarrier modulation signals
    • H04L5/026—Multiplexing of multicarrier modulation signals using code division

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)
DE602005000640T 2004-01-27 2005-01-26 System und Verfahren zur OFDM-Kommunikation Active DE602005000640T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004018772 2004-01-27
JP2004018772 2004-01-27

Publications (2)

Publication Number Publication Date
DE602005000640D1 true DE602005000640D1 (de) 2007-04-19
DE602005000640T2 DE602005000640T2 (de) 2007-11-22

Family

ID=34650770

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602005000640T Active DE602005000640T2 (de) 2004-01-27 2005-01-26 System und Verfahren zur OFDM-Kommunikation

Country Status (5)

Country Link
US (1) US7397839B2 (de)
EP (1) EP1560359B1 (de)
KR (1) KR100572577B1 (de)
CN (1) CN100488184C (de)
DE (1) DE602005000640T2 (de)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005057429A (ja) * 2003-08-01 2005-03-03 Nec Corp Ｃｄｍａ通信装置およびその方法
US7397839B2 (en) * 2004-01-27 2008-07-08 Ntt Docomo, Inc. OFDM communication system and method
CN101068134A (zh) * 2004-06-16 2007-11-07 三菱电机株式会社 通信装置
JPWO2006022136A1 (ja) * 2004-08-24 2008-05-08 シャープ株式会社 データ通信システム、受信装置及び送信装置
US7852746B2 (en) * 2004-08-25 2010-12-14 Qualcomm Incorporated Transmission of signaling in an OFDM-based system
US7715460B2 (en) 2005-04-22 2010-05-11 Interdigital Technology Corporation Hybrid orthogonal frequency division multiple access system and method
JP4463723B2 (ja) * 2005-04-28 2010-05-19 株式会社エヌ・ティ・ティ・ドコモ 送信機及び送信方法
KR101119351B1 (ko) 2005-05-04 2012-03-06 삼성전자주식회사 직교 주파수 분할 다중 시스템에서 정보의 송수신 방법 및 장치와 그 시스템
US8254360B2 (en) * 2005-06-16 2012-08-28 Qualcomm Incorporated OFDMA control channel interlacing
KR100863791B1 (ko) * 2005-10-12 2008-10-17 삼성전자주식회사 주파수분할 다중접속 방식의 통신시스템에서 패킷 데이터 제어 채널을 이용하여 채널을 추정하기 위한 송수신 장치 및 방법과 그 시스템
JP4455541B2 (ja) * 2006-06-19 2010-04-21 株式会社エヌ・ティ・ティ・ドコモ 移動局装置および基地局装置並びに上りリンクのユーザ間同期方法
WO2008041110A2 (en) * 2006-10-04 2008-04-10 Nokia Corporation Method for symbol multiplexing control and data channel
KR100969805B1 (ko) * 2006-10-12 2010-07-13 삼성전자주식회사 이동 통신 시스템에서 데이터 송수신 장치 및 방법
MY146447A (en) 2006-11-01 2012-08-15 Qualcomm Inc Multiplexing of control and data with varying power offsets in a sc-fdma system
KR101341500B1 (ko) * 2007-02-09 2013-12-16 엘지전자 주식회사 역확산 기반 신호 검출 방법 및 이를 위한 신호 송신 방법
GB0708344D0 (en) * 2007-04-30 2007-06-06 Nokia Siemens Networks Oy Data modulation in a communication system
JP5035351B2 (ja) * 2007-11-28 2012-09-26 富士通株式会社 無線送信装置、無線受信装置、無線送受信システム、及びこれらの方法
US8194799B2 (en) * 2009-03-30 2012-06-05 King Fahd University of Pertroleum & Minerals Cyclic prefix-based enhanced data recovery method
US8331417B2 (en) * 2010-04-20 2012-12-11 Los Alamos National Security, Llc Energy efficiency in wireless communication systems
JP2019169749A (ja) * 2016-08-10 2019-10-03 シャープ株式会社 送信装置及び通信方法
US11031961B2 (en) * 2019-07-16 2021-06-08 Microsoft Technology Licensing, Llc Smart symbol changes for optimization of communications using error correction
DE102022113117B3 (de) 2022-05-24 2023-10-05 Oliver Bartels Besonders sicheres Mehrträger-Kommunikationsgerät für hohe Datenraten

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2802582B2 (ja) 1994-01-31 1998-09-24 松下電器産業株式会社 Ｃｄｍａ／ｔｄｄ方式無線通信システムおよびｃｄｍａ／ｔｄｄ方式移動機およびｃｄｍａ／ｔｄｄ方式基地局およびｃｄｍａ／ｔｄｄ方式無線通信方法
JPH10210002A (ja) 1997-01-17 1998-08-07 Victor Co Of Japan Ltd 移動通信方式
JP2000295198A (ja) 1999-04-01 2000-10-20 Matsushita Electric Ind Co Ltd Ｃｄｍａ基地局装置及びｃｄｍａ通信方法
JP3715141B2 (ja) 1999-07-13 2005-11-09 松下電器産業株式会社 通信端末装置
JP3581281B2 (ja) 1999-11-11 2004-10-27 松下電器産業株式会社 Ｏｆｄｍ−ｃｄｍａ方式受信装置およびｏｆｄｍ−ｃｄｍａ方式送信装置
GB9929373D0 (en) * 1999-12-10 2000-02-09 Nokia Networks Oy Data rate estimation in a communication system
JP3522619B2 (ja) 2000-01-05 2004-04-26 株式会社エヌ・ティ・ティ・ドコモ マルチキャリアｃｄｍａ伝送システムにおける送信機
WO2002013395A2 (en) * 2000-08-04 2002-02-14 Telefonaktiebolaget Lm Ericsson (Publ) Spreading factor detector
JP3628987B2 (ja) 2001-07-31 2005-03-16 松下電器産業株式会社 無線通信装置および無線通信方法
JP3924565B2 (ja) * 2001-08-30 2007-06-06 株式会社エヌ・ティ・ティ・ドコモ 無線伝送システムおよび方法並びにその無線伝送システムで用いられる送信局装置および受信局装置
JP3727283B2 (ja) 2001-11-26 2005-12-14 松下電器産業株式会社 無線送信装置、無線受信装置及び無線送信方法
WO2003061170A1 (fr) 2002-01-10 2003-07-24 Fujitsu Limited Procede de multiplexage de pilote dans un systeme ofdm et procede de reception ofdm
JP2003309533A (ja) 2002-04-17 2003-10-31 Matsushita Electric Ind Co Ltd 無線送信装置、無線受信装置及びその方法
CA2428576C (en) 2002-05-16 2008-10-07 Ntt Docomo, Inc. Transmitter for multi-carrier transmission and multi-carrier transmitting method
US7177297B2 (en) * 2003-05-12 2007-02-13 Qualcomm Incorporated Fast frequency hopping with a code division multiplexed pilot in an OFDMA system
US20050141598A1 (en) * 2003-12-30 2005-06-30 Hidenori Akita Method and apparatus for estimating a SIR of a pilot channel in a MC-CDMA system
US7397839B2 (en) * 2004-01-27 2008-07-08 Ntt Docomo, Inc. OFDM communication system and method

Also Published As

Publication number Publication date
CN1649337A (zh) 2005-08-03
EP1560359B1 (de) 2007-03-07
KR100572577B1 (ko) 2006-04-24
US20050185725A1 (en) 2005-08-25
KR20050077287A (ko) 2005-08-01
DE602005000640T2 (de) 2007-11-22
CN100488184C (zh) 2009-05-13
US7397839B2 (en) 2008-07-08
EP1560359A1 (de) 2005-08-03

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Legal Events

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