WO2007013414A1 - Émetteur, récepteur et leur procédé de commande - Google Patents

Émetteur, récepteur et leur procédé de commande Download PDF

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Publication number
WO2007013414A1
WO2007013414A1 PCT/JP2006/314601 JP2006314601W WO2007013414A1 WO 2007013414 A1 WO2007013414 A1 WO 2007013414A1 JP 2006314601 W JP2006314601 W JP 2006314601W WO 2007013414 A1 WO2007013414 A1 WO 2007013414A1
Authority
WO
WIPO (PCT)
Prior art keywords
wavelet
pattern
signal
transmitter
subband
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.)
Ceased
Application number
PCT/JP2006/314601
Other languages
English (en)
Japanese (ja)
Inventor
Yuta Seki
Masahiko Nanri
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of WO2007013414A1 publication Critical patent/WO2007013414A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0004—Modulated-carrier systems using wavelets
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • 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
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • 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

Definitions

  • Patent Document 1 Japanese Patent Laid-Open No. 11-275165
  • the receiver of the present invention includes a wavelet pattern information demodulating means for demodulating wavelet pattern information from the received signal in a receiver that receives a signal that has been subjected to orthogonal inverse wavelet transform and transmitted.
  • a reception wavelet pattern determination unit that determines a wavelet pattern based on the demodulated wavelet pattern information, and a demodulation unit that performs orthogonal wavelet transform on the signal according to the determined wavelet pattern and demodulates the signal.
  • FIG. 8 is a schematic diagram showing how a wavelet pattern is updated according to Embodiment 3 of the present invention.
  • FIG. 11 is a flowchart for explaining the operation of the transmitter according to the fourth embodiment of the present invention.
  • SZP conversion section 101 uses a predetermined subband mapping pattern at the time of initial transmission, and transmits transmission data based on the subband pattern output from subband mapping pattern determination section 109 at the time of retransmission. SZP-converted and output to inverse wavelet transform unit 102. In addition, S / P conversion section 101 also outputs subband mapping pattern information to inverse wavelet conversion section 102 together with the transmission data sequence.
  • the inverse wavelet transform unit 102 performs inverse wavelet transform on the input and outputs the result to the DZA transform unit 103.
  • the ⁇ / A conversion unit 103 converts the input signal into an analog signal and outputs the analog signal to the transmission unit 104.
  • the transmission unit 104 converts the input signal into a high frequency signal and outputs it to the transmission antenna 105.
  • Transmission antenna 105 wirelessly transmits transmission data and subband mapping pattern information to the receiver of the communication partner.
  • transmitter 100 updates the subband mapping pattern for each retransmission associated with a communication error, performs communication by wavelet transform using the new subband mapping pattern, and Interleaving effect is easily obtained for communication errors.
  • the error probability for each information symbol varies between the first transmission (a) and the retransmission (b).
  • changing the subband mapping pattern for each retransmission has the effect of changing the transmission characteristics, and as a result, the interleaving effect can be effectively utilized, and the communication can be effectively performed. It leads to the improvement of the throughput of the whole system.
  • the inverse wavelet transform unit 102 performs inverse wavelet transform on the input signal and performs parallel-serial conversion to output to the DZA transform unit 103.
  • the DZA conversion unit 103 converts the input signal into an analog signal and outputs it to the transmission unit 104.
  • the output of the transmission unit 104 is wirelessly transmitted from the transmission antenna 105. Accordingly, the receiver can receive a new subband mapping pattern.
  • the data obtained as a result of demodulation is determined by the error determination unit 407 as to whether there is an error.
  • This determination result is wirelessly transmitted to transmitter 100 in FIG. 1 via retransmission control information generation section 408, transmission section 409, and transmission antenna 410.
  • the subband mapping pattern information demodulated by error determination section 407 is output to subband mapping pattern determination section 411.
  • the transmitter 900 and the receiver 950 according to Embodiment 4 have a configuration for counting the number of retransmissions so that the partial power of 900 reference numbers in FIG. 9 and FIG. 10 is also divided. Accordingly, the wavelet pattern (subband mapping pattern and subband pattern) is controlled to be updated.
  • the wavelet pattern update itself used in this embodiment is the same as the method used in Embodiments 1 and 3.
  • receiver 950 performs wavelet transform using a new wavelet pattern and demodulates received data (ST153).
  • receiver 950 determines whether there is a communication error in the received data (ST154). If there is an error, NACK is transmitted to transmitter 900 (ST154: Yes, ST155). If there is no error, receiver 950 transmits ACK to transmitter 900 (ST154: No, ST155).

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

La présente invention concerne un émetteur qui utilise la transformation en ondelettes pour augmenter le débit d'un système de communication à porteuses multiples. Dans cet émetteur (100), lorsqu'une unité de démodulation des données de commande de retransmission (108) reçoit une erreur de communication (NACK) d'un récepteur, une unité de détermination d'un modèle de mappage de sous-bandes (109) met à jour un modèle de mappage de sous-bandes à utiliser par une unité de transformation inverse en ondelettes (102). Lors de cette mise à jour, l'émetteur (100) utilise le modèle de mappage de sous-bandes, qui est différent à chaque détection de l'erreur de communication, pour effectuer une transformation en ondelettes de façon à retransmettre les données de transport. Le récepteur, qui reçoit les données retransmises, peut utiliser l'effet d'entrelacement des données reçues.
PCT/JP2006/314601 2005-07-25 2006-07-24 Émetteur, récepteur et leur procédé de commande Ceased WO2007013414A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005214919A JP2007036491A (ja) 2005-07-25 2005-07-25 送信機、受信機およびそれらの制御方法
JP2005-214919 2005-07-25

Publications (1)

Publication Number Publication Date
WO2007013414A1 true WO2007013414A1 (fr) 2007-02-01

Family

ID=37683310

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/314601 Ceased WO2007013414A1 (fr) 2005-07-25 2006-07-24 Émetteur, récepteur et leur procédé de commande

Country Status (2)

Country Link
JP (1) JP2007036491A (fr)
WO (1) WO2007013414A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4555185B2 (ja) * 2005-07-25 2010-09-29 パナソニック株式会社 送信機、受信機およびその制御方法
US8411766B2 (en) 2008-04-09 2013-04-02 Wi-Lan, Inc. System and method for utilizing spectral resources in wireless communications
US8274885B2 (en) 2008-10-03 2012-09-25 Wi-Lan, Inc. System and method for data distribution in VHF/UHF bands
US8107391B2 (en) 2008-11-19 2012-01-31 Wi-Lan, Inc. Systems and etiquette for home gateways using white space
US8335204B2 (en) 2009-01-30 2012-12-18 Wi-Lan, Inc. Wireless local area network using TV white space spectrum and long term evolution system architecture
US8937872B2 (en) 2009-06-08 2015-01-20 Wi-Lan, Inc. Peer-to-peer control network for a wireless radio access network

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11275165A (ja) * 1998-03-20 1999-10-08 Communication Research Laboratory 直交ウェーブレットを用いた情報伝送方法
JP2003218831A (ja) * 2002-01-24 2003-07-31 Matsushita Electric Ind Co Ltd 電力線搬送通信装置
JP2004104293A (ja) * 2002-09-06 2004-04-02 Mitsubishi Electric Corp 再送制御方法および通信装置
JP2004166217A (ja) * 2002-09-25 2004-06-10 Matsushita Electric Ind Co Ltd 通信装置
JP2004304268A (ja) * 2003-03-28 2004-10-28 Matsushita Electric Ind Co Ltd 無線送信装置、無線受信装置及び方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11275165A (ja) * 1998-03-20 1999-10-08 Communication Research Laboratory 直交ウェーブレットを用いた情報伝送方法
JP2003218831A (ja) * 2002-01-24 2003-07-31 Matsushita Electric Ind Co Ltd 電力線搬送通信装置
JP2004104293A (ja) * 2002-09-06 2004-04-02 Mitsubishi Electric Corp 再送制御方法および通信装置
JP2004166217A (ja) * 2002-09-25 2004-06-10 Matsushita Electric Ind Co Ltd 通信装置
JP2004304268A (ja) * 2003-03-28 2004-10-28 Matsushita Electric Ind Co Ltd 無線送信装置、無線受信装置及び方法

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Publication number Publication date
JP2007036491A (ja) 2007-02-08

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