WO2008032381A1 - Émetteur, récepteur et système de réception/transmission muliporteuse - Google Patents

Émetteur, récepteur et système de réception/transmission muliporteuse Download PDF

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Publication number
WO2008032381A1
WO2008032381A1 PCT/JP2006/318253 JP2006318253W WO2008032381A1 WO 2008032381 A1 WO2008032381 A1 WO 2008032381A1 JP 2006318253 W JP2006318253 W JP 2006318253W WO 2008032381 A1 WO2008032381 A1 WO 2008032381A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission
communication quality
data
subcarriers
subcarrier
Prior art date
Application number
PCT/JP2006/318253
Other languages
English (en)
Japanese (ja)
Inventor
Ryuichi Yoda
Original Assignee
Fujitsu Limited
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 Fujitsu Limited filed Critical Fujitsu Limited
Priority to JP2008534184A priority Critical patent/JP4820874B2/ja
Priority to PCT/JP2006/318253 priority patent/WO2008032381A1/fr
Publication of WO2008032381A1 publication Critical patent/WO2008032381A1/fr

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Classifications

    • 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
    • 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
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management

Definitions

  • the present invention relates to a transmission device, a reception device, and a multicarrier transmission / reception system, and more particularly to a transmission device, a reception device, and a multicarrier transmission / reception system that use an OFDM (Orthogonal Frequency Division Multiple Access) scheme.
  • OFDM Orthogonal Frequency Division Multiple Access
  • a transmission device, a reception device, and a multicarrier transmission / reception system have the following characteristics.
  • the receiving side detects a subcarrier with a high error rate for each subcarrier, that is, a subcarrier with low communication quality, and notifies the transmitting side of the detection result.
  • the transmitting side receives the notification, and based on the detection result of the low communication quality and the subcarrier, the communication quality is low and a plurality of subcarriers are collectively allocated to the transmission channel of the same data.
  • the same data is multiplexed and assigned to multiple subcarriers.
  • FIG. 2 is a block diagram showing a configuration of a receiving apparatus that is useful in the embodiment of the present invention.
  • the receiving device 3 includes an antenna 31, an antenna switch (indicated as “SW” in the figure) 32, a reception RF unit 33, an FFT unit 34, a demodulation / decoding unit 35, a quality detection unit 36, Multiplexed data composition unit 37, a control unit 38, a modulation / encoding unit 39, an IFFT unit 40, and a transmission RF unit 41.
  • notification information including a subcarrier number and quality information is generated. That is, low quality subcarrier information using low quality subcarrier number and quality level information is generated, and notification information including this is generated (step S37). If the number of subcarriers with low communication quality is equal to or greater than the threshold (step S36: No), notification information including only the subcarrier number is generated. That is, low-quality subcarrier information having only a low-quality subcarrier number is generated, and notification information including this is generated (step S38).
  • the notification information generated in step S37 or step S38 is sent to the modulation / encoding unit 39, subjected to modulation / encoding processing, subjected to inverse fast Fourier transform, and transmitted to the transmission apparatus 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un émetteur qui transmet des signaux modulés OFDM à un récepteur (étape S1). Le récepteur mesure la qualité de communication du signal reçu de chaque sous-porteuse (étape S2) et rapporte à l'émetteur l'information sur les sous-porteuses ayant une faible qualité de communication (étape S3). L'émetteur détermine les diverses sous-porteuses ayant la faible qualité de communication, auxquelles les mêmes données sont attribuées selon l'information rapportée de la part du récepteur (étape S4), et leur attribue et leur émet les données multiplexées (étape S5, S6). Le récepteur sépare les signaux reçus en un groupe de sous-porteuses auquel les mêmes données sont attribuées et un groupe de sous-porteuses auquel les mêmes données ne sont pas attribuées, et les démodulent en combinaison avec les données du dernier groupe de sous-porteuses (étape S7).
PCT/JP2006/318253 2006-09-14 2006-09-14 Émetteur, récepteur et système de réception/transmission muliporteuse WO2008032381A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2008534184A JP4820874B2 (ja) 2006-09-14 2006-09-14 送信装置、受信装置およびマルチキャリア送受信システム
PCT/JP2006/318253 WO2008032381A1 (fr) 2006-09-14 2006-09-14 Émetteur, récepteur et système de réception/transmission muliporteuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/318253 WO2008032381A1 (fr) 2006-09-14 2006-09-14 Émetteur, récepteur et système de réception/transmission muliporteuse

Publications (1)

Publication Number Publication Date
WO2008032381A1 true WO2008032381A1 (fr) 2008-03-20

Family

ID=39183455

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/318253 WO2008032381A1 (fr) 2006-09-14 2006-09-14 Émetteur, récepteur et système de réception/transmission muliporteuse

Country Status (2)

Country Link
JP (1) JP4820874B2 (fr)
WO (1) WO2008032381A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2890027A1 (fr) 2013-12-27 2015-07-01 Fujitsu Limited Système de communication optique, procédé de commande de communication optique et émetteur optique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11266224A (ja) * 1998-03-18 1999-09-28 Nippon Telegr & Teleph Corp <Ntt> 直交周波数多重通信装置
JP2005027107A (ja) * 2003-07-03 2005-01-27 Matsushita Electric Ind Co Ltd マルチキャリア通信装置およびフィードバック情報通信方法
WO2006070755A1 (fr) * 2004-12-28 2006-07-06 Matsushita Electric Industrial Co., Ltd. Appareil et procede de controle de la puissance de transmission, appareil et procede d'estimation du parcours de propagation
WO2006080506A1 (fr) * 2005-01-31 2006-08-03 Matsushita Electric Industrial Co., Ltd. Appareil de station base et méthode de transmission sans fil
WO2006082815A1 (fr) * 2005-02-02 2006-08-10 Matsushita Electric Industrial Co., Ltd. Systeme de transmission radio et dispositif et procede de controle de schema d'entrelacement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11266224A (ja) * 1998-03-18 1999-09-28 Nippon Telegr & Teleph Corp <Ntt> 直交周波数多重通信装置
JP2005027107A (ja) * 2003-07-03 2005-01-27 Matsushita Electric Ind Co Ltd マルチキャリア通信装置およびフィードバック情報通信方法
WO2006070755A1 (fr) * 2004-12-28 2006-07-06 Matsushita Electric Industrial Co., Ltd. Appareil et procede de controle de la puissance de transmission, appareil et procede d'estimation du parcours de propagation
WO2006080506A1 (fr) * 2005-01-31 2006-08-03 Matsushita Electric Industrial Co., Ltd. Appareil de station base et méthode de transmission sans fil
WO2006082815A1 (fr) * 2005-02-02 2006-08-10 Matsushita Electric Industrial Co., Ltd. Systeme de transmission radio et dispositif et procede de controle de schema d'entrelacement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MEDINA L. ET AL.: "Proposal of OFDM System with Data Repetition", IEEE VEHICULAR TECHNOLOGY CONFERENCE, vol. 1, September 2000 (2000-09-01), pages 352 - 357, XP001033164 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2890027A1 (fr) 2013-12-27 2015-07-01 Fujitsu Limited Système de communication optique, procédé de commande de communication optique et émetteur optique
US9509412B2 (en) 2013-12-27 2016-11-29 Fujitsu Limited Optical communication system, method for controlling optical communication, and optical transmitter

Also Published As

Publication number Publication date
JPWO2008032381A1 (ja) 2010-01-21
JP4820874B2 (ja) 2011-11-24

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