WO2008149856A1 - 変調装置、復調装置、および音響信号伝送方法 - Google Patents

変調装置、復調装置、および音響信号伝送方法 Download PDF

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Publication number
WO2008149856A1
WO2008149856A1 PCT/JP2008/060207 JP2008060207W WO2008149856A1 WO 2008149856 A1 WO2008149856 A1 WO 2008149856A1 JP 2008060207 W JP2008060207 W JP 2008060207W WO 2008149856 A1 WO2008149856 A1 WO 2008149856A1
Authority
WO
WIPO (PCT)
Prior art keywords
acoustic signal
demodulation
demodulation device
sequence
modulation
Prior art date
Application number
PCT/JP2008/060207
Other languages
English (en)
French (fr)
Inventor
Hosei Matsuoka
Takeshi Yoshimura
Toshirou Kawahara
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.
Priority to US12/663,075 priority Critical patent/US8411531B2/en
Priority to EP08765020.6A priority patent/EP2166683B1/en
Priority to CN2008800098182A priority patent/CN101641891B/zh
Publication of WO2008149856A1 publication Critical patent/WO2008149856A1/ja

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves
    • 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
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions
    • 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
    • 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
    • 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
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2675—Pilot or known symbols
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

　同期信号のための搬送波周波数を用いることなく、データ信号に対する同期処 理を行うことができる変調装置、復調装置およびこれらを用いた伝送システム、ならびに音響信号伝送方法を提供することを目的とする。 　変調装置３において、搬送波周波数に応じて設定されたＰＮ系列およびデータ信号が重畳された音響信号を送信する。復調装置９において、この音響信号を受信し、複数のＰＮ系列において音響信号との最大相関値が最も高いＰＮ系列を判別し、判別されたＰＮ系列と音響信号との相関値に基づいてシンボル同期ポイントを検出して、同期処理を行う。その後、ＯＦＤＭ復調処理部３８は、検出された同期ポイントおよび判別されたＰＮ系列に基づいて音響信号に重畳されているデータ信号の搬送波周波数帯域を決定してデータ信号を復調する。
PCT/JP2008/060207 2007-06-07 2008-06-03 変調装置、復調装置、および音響信号伝送方法 WO2008149856A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/663,075 US8411531B2 (en) 2007-06-07 2008-06-03 Modulation device, demodulation device, and acoustic signal transmission method
EP08765020.6A EP2166683B1 (en) 2007-06-07 2008-06-03 Modulation device, demodulation device, and acoustic signal transmission method
CN2008800098182A CN101641891B (zh) 2007-06-07 2008-06-03 调制装置、解调装置及声信号传输方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007151897A JP4361575B2 (ja) 2007-06-07 2007-06-07 変調装置、復調装置、および音響信号伝送方法
JP2007-151897 2007-06-07

Publications (1)

Publication Number Publication Date
WO2008149856A1 true WO2008149856A1 (ja) 2008-12-11

Family

ID=40093672

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/060207 WO2008149856A1 (ja) 2007-06-07 2008-06-03 変調装置、復調装置、および音響信号伝送方法

Country Status (5)

Country Link
US (1) US8411531B2 (ja)
EP (1) EP2166683B1 (ja)
JP (1) JP4361575B2 (ja)
CN (1) CN101641891B (ja)
WO (1) WO2008149856A1 (ja)

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* Cited by examiner, † Cited by third party
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EP2312763A4 (en) * 2008-08-08 2015-12-23 Yamaha Corp MODULATION DEVICE AND DEMODULATION DEVICE
JP2010074398A (ja) * 2008-09-17 2010-04-02 Ntt Docomo Inc Ｏｆｄｍ変復調方法、ｏｆｄｍ変調装置、ｏｆｄｍ復調装置およびｏｆｄｍ変復調システム
JP4495243B2 (ja) * 2009-07-27 2010-06-30 株式会社エヌ・ティ・ティ・ドコモ Ｏｆｄｍ変復調方法、ｏｆｄｍ変調装置およびｏｆｄｍ復調装置
GB2489922A (en) * 2011-04-06 2012-10-17 Univ Bangor Synchronising optical OFDM signal with pattern of DC offset levels superimposed upon OFDM symbols
CN103138807B (zh) * 2011-11-28 2014-11-26 财付通支付科技有限公司 一种近距离通信实现方法和系统
CN106027449B (zh) * 2011-12-14 2019-02-19 福建联拓科技有限公司 对讲机通信的帧同步的方法及其装置
CN103856269B (zh) * 2012-12-07 2016-05-11 国民技术股份有限公司 基于声波的信息发射、读取方法及装置
KR101431392B1 (ko) 2013-09-09 2014-09-25 서울대학교산학협력단 음파신호를 이용한 통신방법, 통신장치 및 정보제공 시스템
KR101567333B1 (ko) * 2014-04-25 2015-11-10 주식회사 크레스프리 ＩｏＴ 디바이스의 통신 설정을 위한 이동통신 단말기와 통신설정모듈 및 이동통신 단말기를 이용한 ＩｏＴ 디바이스의 통신 설정 방법
KR101568314B1 (ko) * 2015-05-26 2015-11-12 주식회사 단솔플러스 음파 통신 장치 및 방법
KR101779539B1 (ko) * 2015-06-18 2017-09-19 주식회사 사운들리 훈련열 동기화 위치 추정방법 및 이를 이용한 수신기
KR101790224B1 (ko) * 2015-08-24 2017-11-20 주식회사 사운들리 훈련열 동기화 위치 추정방법 및 이를 이용한 수신기
TWI568306B (zh) * 2015-10-15 2017-01-21 國立交通大學 裝置配對連線之方法
CN107645343B (zh) 2016-07-20 2021-10-22 阿里巴巴集团控股有限公司 基于声波的数据发送/接收方法及数据传输系统
US9686397B1 (en) * 2016-09-29 2017-06-20 Samsung Electronics Co., Ltd. Acoustic-based communication between devices
CN115567185A (zh) * 2022-12-06 2023-01-03 成都航天通信设备有限责任公司 一种基于通用计算机的码元同步解调方法及系统

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JPH09233047A (ja) * 1996-02-22 1997-09-05 Sharp Corp 直交周波数分割多重信号伝送方式
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WO2002045286A2 (en) 2000-11-30 2002-06-06 Scientific Generics Limited Acoustic communication system
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JPH07245574A (ja) * 1994-03-07 1995-09-19 Nippon Hoso Kyokai <Nhk> ディジタル信号伝送方法
JPH09233047A (ja) * 1996-02-22 1997-09-05 Sharp Corp 直交周波数分割多重信号伝送方式
JPH10210002A (ja) * 1997-01-17 1998-08-07 Victor Co Of Japan Ltd 移動通信方式
JP2001148670A (ja) 1999-11-19 2001-05-29 Nippon Telegr & Teleph Corp <Ntt> 音響信号伝達方法および音響信号伝達装置
WO2002045286A2 (en) 2000-11-30 2002-06-06 Scientific Generics Limited Acoustic communication system
WO2007043376A1 (ja) * 2005-10-07 2007-04-19 Ntt Docomo, Inc. 変調装置、変調方法、復調装置、及び復調方法

Non-Patent Citations (1)

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Title
See also references of EP2166683A4

Also Published As

Publication number Publication date
US20100182876A1 (en) 2010-07-22
JP4361575B2 (ja) 2009-11-11
CN101641891A (zh) 2010-02-03
CN101641891B (zh) 2012-10-03
EP2166683A4 (en) 2012-11-28
JP2008306477A (ja) 2008-12-18
EP2166683A1 (en) 2010-03-24
US8411531B2 (en) 2013-04-02
EP2166683B1 (en) 2015-08-12

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