JP4410801B2 - Ｏｆｄｍ信号の変調および復調 - Google Patents

Ｏｆｄｍ信号の変調および復調 Download PDF

Info

Publication number
JP4410801B2
JP4410801B2 JP2006546353A JP2006546353A JP4410801B2 JP 4410801 B2 JP4410801 B2 JP 4410801B2 JP 2006546353 A JP2006546353 A JP 2006546353A JP 2006546353 A JP2006546353 A JP 2006546353A JP 4410801 B2 JP4410801 B2 JP 4410801B2
Authority
JP
Japan
Prior art keywords
complex
symbol
ofdm signal
subcarrier
intermediate frequency
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
JP2006546353A
Other languages
English (en)
Japanese (ja)
Other versions
JP2007518302A5 (https=
JP2007518302A (ja
Inventor
フラー、ジーメオン
イェリト、イェンズ
ショット、ヴォルフガング
ヴァイス、ビート
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of JP2007518302A publication Critical patent/JP2007518302A/ja
Publication of JP2007518302A5 publication Critical patent/JP2007518302A5/ja
Application granted granted Critical
Publication of JP4410801B2 publication Critical patent/JP4410801B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
    • 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
    • H04L27/26524—Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation

Landscapes

  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
JP2006546353A 2004-01-06 2004-11-19 Ｏｆｄｍ信号の変調および復調 Expired - Fee Related JP4410801B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP04405006 2004-01-06
PCT/IB2004/003799 WO2005076557A1 (en) 2004-01-06 2004-11-19 Modulation and demodulation of ofdm signals

Publications (3)

Publication Number Publication Date
JP2007518302A JP2007518302A (ja) 2007-07-05
JP2007518302A5 JP2007518302A5 (https=) 2007-11-01
JP4410801B2 true JP4410801B2 (ja) 2010-02-03

Family

ID=34833821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006546353A Expired - Fee Related JP4410801B2 (ja) 2004-01-06 2004-11-19 Ｏｆｄｍ信号の変調および復調

Country Status (7)

Country Link
US (1) US20090323510A1 (https=)
EP (1) EP1702445B1 (https=)
JP (1) JP4410801B2 (https=)
CN (1) CN1902876B (https=)
AT (1) ATE362683T1 (https=)
DE (1) DE602004006537T2 (https=)
WO (1) WO2005076557A1 (https=)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7933344B2 (en) 2006-04-25 2011-04-26 Mircosoft Corporation OFDMA based on cognitive radio
US8189621B2 (en) 2006-05-12 2012-05-29 Microsoft Corporation Stack signaling to application with lack of requested bandwidth
DE602007012880D1 (de) * 2006-06-12 2011-04-14 Nxp Bv Polarsignalgenerator
WO2008001269A2 (en) * 2006-06-28 2008-01-03 Nxp B.V. Phase-to- frequency conversion for polar transmitters
US8320474B2 (en) * 2006-12-06 2012-11-27 Qualcomm Incorporated Digital frequency hopping in multi-band OFDM
US8144793B2 (en) 2006-12-12 2012-03-27 Microsoft Corporation Cognitive multi-user OFDMA
US7693428B2 (en) * 2007-02-27 2010-04-06 Celight, Inc. Optical orthogonal frequency division multiplexed communications with nonlinearity compensation
US7929623B2 (en) 2007-03-30 2011-04-19 Microsoft Corporation FEC in cognitive multi-user OFDMA
US7970085B2 (en) 2007-05-08 2011-06-28 Microsoft Corporation OFDM transmission and reception for non-OFDMA signals
FR2919085B1 (fr) * 2007-07-17 2011-06-17 Thales Sa Procede et dispositif d'analyse frequentielle de signaux radioelectriques en temps reel
US8374130B2 (en) 2008-01-25 2013-02-12 Microsoft Corporation Orthogonal frequency division multiple access with carrier sense
US8855087B2 (en) 2008-12-18 2014-10-07 Microsoft Corporation Wireless access point supporting control by multiple applications
CN101616104B (zh) * 2009-07-27 2011-12-07 北京天碁科技有限公司 正交频分复用系统的信道估计方法和装置
CN101741801B (zh) * 2009-11-04 2013-05-01 西安空间无线电技术研究所 一种32路并行数据dft的实现结构
KR101733489B1 (ko) 2010-01-17 2017-05-24 엘지전자 주식회사 무선 통신 시스템에서 제어 정보의 전송 방법 및 장치
WO2011126246A2 (ko) * 2010-04-04 2011-10-13 엘지전자 주식회사 무선 통신 시스템에서 제어 정보의 전송 방법 및 장치
CN102833012B (zh) * 2011-06-17 2014-11-26 鼎桥通信技术有限公司 多载波发射系统中的下行和上行数字中频自检方法
JP2013026901A (ja) * 2011-07-22 2013-02-04 Fujitsu Ltd 無線通信装置及び無線通信方法
US8824580B2 (en) * 2012-08-13 2014-09-02 Telefonaktiebolaget L M Ericsson (Publ) Communicating over a desired tone in the presence of interference having an unknown magnitude that is substantially constant
CN104854569B (zh) * 2012-11-06 2018-01-05 加利福尼亚大学董事会 用于多频带串行器解串器i/o电路的自跟踪方案
CN103986679A (zh) * 2013-02-07 2014-08-13 芯迪半导体科技（上海）有限公司 Ofdm收发器的同相和正交相信号传播时延补偿电路
EP2835926B1 (en) * 2013-08-05 2019-06-12 Alcatel Lucent Transmitter apparatus for conditioning a multicarrier signal, network node, method for conditioning a multicarrier signal, and computer program thereof
US11336496B2 (en) * 2014-10-02 2022-05-17 Stmicroelectronics Sa Real time OFDM transmission system
US9998315B2 (en) * 2016-03-08 2018-06-12 Blackberry Limited Method and apparatus for I-Q decoupled OFDM modulation and demodulation
US10212014B2 (en) * 2016-11-03 2019-02-19 Blackberry Limited Communication with I-Q decoupled OFDM modulation
CN106932492B (zh) * 2017-03-13 2019-06-04 南京航空航天大学 一种基于ofdm信号的超声目标检测方法
CN108965184B (zh) * 2017-05-25 2021-08-17 中兴通讯股份有限公司 一种离散多音频调制复用系统及方法
EP3537679B1 (en) * 2018-03-09 2021-02-24 Nokia Technologies Oy Multi-window fast convolution processing
DE102018119278B4 (de) * 2018-08-08 2020-04-02 Infineon Technologies Ag Verfahren und vorrichtungen für die verarbeitung eines ofdm-radarsignals
US11240082B1 (en) * 2019-04-10 2022-02-01 Arctan, Inc. Methods and systems for modulating and de modulating data
CN112054981B (zh) * 2020-08-17 2022-07-15 西安理工大学 一种实正交相移键控调制解调方法
CN120825375A (zh) * 2024-04-15 2025-10-21 中兴通讯股份有限公司 调制符号处理方法、第一通信节点、第二通信节点及介质

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1273794B (it) * 1994-02-22 1997-07-10 Italtel Spa Sistema con multiplazione ortogonale a divisione di frequenza (ofdm) per la trasmissione di sequenze di dati
US5987005A (en) * 1997-07-02 1999-11-16 Telefonaktiebolaget Lm Ericsson Method and apparatus for efficient computation of discrete fourier transform (DFT) and inverse discrete fourier transform
JP4083861B2 (ja) * 1998-03-06 2008-04-30 株式会社日立国際電気 ディジタル信号伝送装置
EP1063824B1 (en) * 1999-06-22 2006-08-02 Matsushita Electric Industrial Co., Ltd. Symbol synchronisation in multicarrier receivers

Also Published As

Publication number Publication date
EP1702445A1 (en) 2006-09-20
EP1702445B1 (en) 2007-05-16
CN1902876A (zh) 2007-01-24
ATE362683T1 (de) 2007-06-15
CN1902876B (zh) 2010-09-22
US20090323510A1 (en) 2009-12-31
DE602004006537D1 (de) 2007-06-28
WO2005076557A1 (en) 2005-08-18
DE602004006537T2 (de) 2008-01-31
JP2007518302A (ja) 2007-07-05

Similar Documents

Publication Publication Date Title
JP4410801B2 (ja) Ｏｆｄｍ信号の変調および復調
DK2315386T3 (en) OFDM communications methods and apparatus
JP3827718B2 (ja) 受信を簡単化するように編成されたｏｆｄｍ信号
JP4008035B2 (ja) マルチキャリア伝送システムにおける復調を簡素化するための方法
WO1999063691A1 (en) Ofdma signal transmitting apparatus and method
US20140003547A1 (en) Orthogonal signal demodulation
CN101119355A (zh) 发送设备、接收设备和无线电通信系统
AU2010321603B2 (en) Improved Orthogonal Frequency Division Multiplexing (OFDM)
JP2014526201A (ja) フィルタバンク・マルチキャリア・システムにおいてｐａｐｒを低減させるための方法および装置
CN101378377A (zh) 正交多路复用信号的峰值抑制方法、峰值抑制电路及发送装置
KR20050089864A (ko) 필터 뱅크 기반 신호 처리 방법 및 장치
WO2016122204A1 (ko) 다중 반송파 통신 시스템에서 전력을 제어하는 방법 및 장치
JPH09266466A (ja) デジタル伝送システム
KR100375350B1 (ko) 직교 주파수 분할 다중 접속에 기반한 데이타 통신 장치및 방법
US6990062B2 (en) Reduced complexity DMT/OFDM transceiver
KR100996474B1 (ko) 복수의 이미징 모드를 갖는 디지털 ｒｆ 트랜시버
JP5322227B2 (ja) 光直交周波数分割多重通信装置及び通信方法
Oltean An introduction to orthogonal frequency division multiplexing
EP1540913B1 (en) Modulation and demodulation of a combination of analog and digital signals
JP3582307B2 (ja) Ｉｄｆｔ演算装置
JP5294327B2 (ja) 直交周波数分割多重通信装置及び直交周波数分割多重通信におけるシンボル同期方法
JP2002359606A (ja) Ｏｆｄｍ装置
KR100325422B1 (ko) 멀티 캐리어를 가진 무반송파 진폭 변조/위상 변조 방법 및 장치
US20220303164A1 (en) System and method to generate a waveform in a communication network
EP1182838A2 (en) Multi-band DMT receiver

Legal Events

Date Code Title Description
A529 Written submission of copy of amendment under article 34 pct

Free format text: JAPANESE INTERMEDIATE CODE: A529

Effective date: 20060623

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070912

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070912

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090811

RD12 Notification of acceptance of power of sub attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7432

Effective date: 20090827

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20090827

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20091016

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: 20091110

RD14 Notification of resignation of power of sub attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7434

Effective date: 20091110

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: 20091113

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: 20121120

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees