WO2008099791A1 - Procédé d'émission, procédé de réception, procédé de transmission, dispositif émetteur et dispositif récepteur - Google Patents

Procédé d'émission, procédé de réception, procédé de transmission, dispositif émetteur et dispositif récepteur Download PDF

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Publication number
WO2008099791A1
WO2008099791A1 PCT/JP2008/052211 JP2008052211W WO2008099791A1 WO 2008099791 A1 WO2008099791 A1 WO 2008099791A1 JP 2008052211 W JP2008052211 W JP 2008052211W WO 2008099791 A1 WO2008099791 A1 WO 2008099791A1
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WIPO (PCT)
Prior art keywords
transmission
antenna
signal
vector
receiving
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PCT/JP2008/052211
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English (en)
Japanese (ja)
Inventor
Naoki Suehiro
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Naoki Suehiro
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.)
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Application filed by Naoki Suehiro filed Critical Naoki Suehiro
Priority to JP2008558080A priority Critical patent/JP5004974B2/ja
Publication of WO2008099791A1 publication Critical patent/WO2008099791A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/10—Polarisation diversity; Directional diversity
    • 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

Definitions

  • the present invention relates to a transmission method, a reception method, a transmission method, a transmission device, and a reception device, and in particular, obtains a Kronet product of each of N row vectors of an N-dimensional DFT matrix and data of length M.
  • the present invention relates to a transmission method, a reception method, a transmission method, a transmission device, and a reception device that transmit and transmit a signal of length MXN generated by the above.
  • the radio communication system to which the present invention is applied is a radio communication system such as a mobile communication system and a wireless LAN communication system.
  • the SD method which is a transmission method for transmitting and receiving the MXN signal generated by the above, is described.
  • i is the row number and 0 ⁇ i ⁇ N— 1 and j is the column number and 0 ⁇ j ⁇ N One is one.
  • variable W N corresponding to the point obtained by dividing the unit circle into N is defined as shown in Fig. 1.
  • W N is a rotor and the following relationship is established.
  • the Nth-order DFT matrix F N has a vector f N , 0 , a vector ⁇ ⁇ ⁇ ⁇ vector f N , N — i row vectors. ing. These line vectors have zero period cross-correlation in all shifts (except for zero shift).
  • transmission apparatus # 0 transmission apparatus # 1
  • transmission apparatus # (N-1) N pieces of length M transmission data: data X.
  • Data X! Data X ( N — D is obtained by using the row vector f N , 0 , the row vector f ⁇ , ⁇ ⁇ ⁇ ⁇ using the row vector f N , N — ⁇ In this way, the generated signal S., S i * ⁇ ⁇ S N — is transmitted.
  • Signal S. , ⁇ -By sending S N _ ! data can be sent from multiple transmitters without correlation.
  • the length of the transmitted signal is NX M length.
  • a matching filter is prepared for matching the signals.
  • the multipath channel does not affect the periodicity of the signal.
  • transmitting an infinite length sequence is not practical. Therefore, we introduce a pseudo-periodic signal that extracts the required length from an infinitely long periodic sequence.
  • L 2 a value greater than the assumed multipath delay time is given. Also, if there is no direct path signal or the power level is very small, the delay time may be negative. Let L i be a value that takes that time into account.
  • a pseudo-periodic signal as shown in Fig. 4 is generated and transmitted.
  • L 2 portion corresponding to cycle re Kkupurefi box referred to as partial and rhino click Li Kkuposu Tofi box falls L i.
  • the length of the data string Xo is determined as M and determined as follows.
  • X0 (p0, pl, p2, p3, ..., p (L2-l), 0, 0, 0) ... (1 1)
  • (p 0 , pi, p2, p3, ... ., pk, ..., p (L2-l)) are complex coefficients that are multiplied by the path that arrives with a delay of time k.
  • This pk is generally calculated using the amplitude coefficient and phase rotation ⁇ k
  • Hikuma see Non-Patent Document 3
  • Hashimoto see Non-Patent Document 4
  • MMSE MinimumMeanSquareError
  • the horizontally polarized pie-port signal and the vertically-polarized pie-port signal have a length of vector I M It can be configured to be (1, 0,... 0).
  • the transmission method of the present invention is configured such that at least one of the transmission-side horizontal polarization antenna and the transmission-side vertical polarization antenna is a plurality of antennas. Can do.
  • the horizontal polarization pilot signal and the vertical polarization pilot signal are transmitted in a transmission data transmission period in which transmission data is transmitted.
  • the period! It is not transmitted, and part of the transmission data transmission period can be configured not to be transmitted.
  • the transmitter of the present invention includes a vertically polarized wave transmitter, a horizontally polarized wave transmitter, a vertically polarized wave and horizontally polarized wave shared part, a transmission side vertically polarized wave antenna, and a transmitter. It can be configured to have a transmission side horizontally polarized antenna.
  • N number of row vectors f N-dimensional DFT matrix or ZCCZ matrix., F l N f 2, ⁇ ⁇ ⁇ f N _ Note that N is a natural number of 4 or more, f., F is for pilot signal transmission, and f 2 ,...
  • F N — i are for transmission data transmission.
  • M is a natural number of 2 or more
  • M is a natural number of 2 or more
  • a horizontal polarization antenna hereinafter referred to as “receiver side horizontal polarization”
  • a vertically polarized antenna hereinafter referred to as a “reception-side vertically polarized antenna”
  • the transmission horizontal polarization antenna Based on the horizontal polarization pilot signal and the vertical polarization pilot signal received by the reception horizontal polarization antenna and the reception vertical polarization antenna, the transmission horizontal polarization antenna and Obtain transmission characteristics including leakage wave components between the transmitting side vertically polarized antenna and the receiving side horizontally polarized antenna and receiving side vertically polarized antenna.
  • the transmission filter is configured to estimate signals transmitted from the transmission-side horizontally polarized antenna and the transmission-side vertically polarized antenna based on the respective outputs of the matched filter according to the above and the obtained transmission characteristics. be able to.
  • the receiving method of the present invention can be configured such that at least one of the receiving side horizontally polarized antenna and the receiving side vertically polarized antenna is a plurality of antennas.
  • the receiving apparatus of the present invention includes a horizontally polarized wave receiving unit, a vertically polarized wave receiving unit, a vertically polarized wave and horizontally polarized wave shared unit, a transmission line characteristic measuring unit, and a receiving side. It can be configured to have a vertically polarized antenna and a receiving side horizontally polarized antenna.
  • the transmission method of the present invention is configured so that each of N row vectors (N is a natural number of 4 or more) and length M (M is 2 or more) of an N-dimensional DFT matrix. In a transmission method for transmitting and receiving signals of length MXN generated by taking the Kronecker product with the natural number of
  • line vector f line vector f.
  • the transmission signal is transmitted using a horizontal polarization antenna (hereinafter referred to as “transmission-side horizontal polarization antenna”) and a vertical polarization antenna (hereinafter referred to as “transmission-side vertical polarization antenna”).
  • transmission-side horizontal polarization antenna a horizontal polarization antenna
  • transmission-side vertical polarization antenna a vertical polarization antenna
  • the received signal is transmitted using a horizontally polarized antenna (hereinafter referred to as “received horizontally polarized antenna”) and a vertically polarized antenna (hereinafter referred to as “received vertically polarized antenna”).
  • the transmitter vertical polarization antenna transmits a Kronecker product signal of the row vector f and the vertical polarization pilot signal.
  • a Kronecker product signal is transmitted from the transmitting side horizontally polarized antenna with the vectors f 2 ,... F N _ i and N ⁇ 2 pieces of transmission data for horizontally polarized waves of length M. Then, from the vertical polarization antenna on the transmission side, a signal of a Kronecker product with the transmission data f 2 , ' ⁇ f N — i and N— 2 pieces of transmission data for vertical polarization of length M is transmitted. And
  • the transmission horizontal polarization antenna On the receiving side, based on the horizontal polarization and the vertical polarization pilot signals received by the reception horizontal polarization antenna and the reception vertical polarization antenna, the transmission horizontal polarization antenna The transmission characteristics including leakage wave components between the transmission-side vertically polarized antenna and the receiver-side horizontally polarized antenna and the receiver-side vertically polarized antenna are obtained.
  • transmission is performed from the transmission side horizontally polarized antenna and the transmission side vertically polarized antenna. Can be configured to estimate the measured signal.
  • the present invention it is possible to provide a transmission method, a reception method, a transmission method, a transmission device, and a reception device with higher radio frequency utilization efficiency.
  • FIG. 1 is a diagram for explaining W N.
  • FIG. 2 is a diagram for explaining an Nth-order DFT matrix.
  • FIG. 3 is a diagram for explaining signal transmission using a row vector of a DFT matrix F N.
  • FIG. 4 is a diagram for explaining a pseudo-periodic signal.
  • FIG. 5 is a diagram for explaining a signal configuration
  • FIG. 7 is a diagram for explaining a transmission device
  • FIG. 8 is a diagram for explaining a receiving device.
  • FIG. 9 is a diagram for explaining the effect of the present invention.
  • the present invention provides a Kronecker product of each of N row vectors (N is a natural number of 4 or more) and data of length M (M is a natural number of 2 or more) of an N-dimensional DFT matrix.
  • a transmission method for transmitting and receiving a generated signal of length MXN comprising:
  • vector f. , F is used for pilot signal transmission
  • the line vector f 2 , ' ⁇ f N is used for data transmission
  • the transmitting side transmits a transmission signal using a horizontal polarization antenna and a vertical polarization antenna
  • the reception side receives a reception signal using a horizontal polarization antenna and a vertical polarization antenna.
  • the above vector is f.
  • a vertically polarized antenna signal from the vertically polarized antenna, and a vertically polarized antenna receives a Kronecker product signal of the above-mentioned vector fi and the vertically polarized pilot signal.
  • the transmission side horizontal polarization antenna and vertical polarization Obtain transmission characteristics including leakage wave components between the antenna and the receiving side horizontally polarized antenna and vertically polarized antenna.
  • both polarizations are transmitted from different antennas on the electric circuit, they pass through different multipath environments and reach the receiving antenna.
  • Each polarization plane may be inclined in the communication path. That is, vertical There is a possibility that the horizontally polarized component interferes with the polarization antenna and the vertically polarized component interferes with the horizontally polarized antenna.
  • XN-I ⁇ X (NI 0, X (NI) I, ..., X (NI) (MI)),
  • YN-i (y (N-i) o, y (N-i) i, ..., y (N_i) (M_i)) * (2 6)
  • a pilot signal is inserted into the first row of data. However, if a pilot signal is inserted at the same row position on a communication path where interference between polarized waves occurs, the components cannot be separated from the signal added by the interference.
  • the pie-mouth signal is determined as follows using two rows at the same row position.
  • X0 (1,0,0, ..., 0)
  • the multipath characteristics of horizontal and vertical polarization can be obtained.
  • the interference component from the other polarization can be known. This is based on the fact that the zero vector line is zero vector no matter how much time delay occurs due to multipath, and it does not interfere with the other polarization of the same line.
  • Figure 5 shows this signal configuration.
  • the arrow at the center means the direction of interference, and it is marked with X because it does not interfere from the zero vector line.
  • the data signals ⁇ and ⁇ ⁇ including these pie-tout rows take the Kronecker product with each row of the DFT matrix, add all the row components for each polarization, and add a cyclic (pre / post) fix Then send.
  • Figure 6 shows the output of each pie-port portion of the signal that has passed through the multipath obtained by actual simulation.
  • Both polarizations that have passed through the multipath channel are received by separate independent antennas. Considering the fact that each polarization component is added to the other polarization component, the following parts are placed from the center of the matched filter output.
  • HN-l (h (N_l) 0 , h (Nl) l, ... ; h (Nl) (Ml)) (2 9)
  • Vo (p HVO, PHV1, ..., P HV (-l))
  • Vl (pVVO, pVVl, ..., pw (M-l))
  • V2 (V20, V21, ..., V2 (M-1))
  • VN_I (V (NI) O, V (NI) I, ..., V (NI) (MI)) ⁇ ⁇ "(3 0) then transmission data Xk, Yk (2 ⁇ k ⁇ N-1) And the output pxx, pYx, pxY, Hk, (2 ⁇ k ⁇ N-1) on the receiving side, the following equation (3 1) holds.
  • the parameter Substituting it becomes 2164, which is not realistic.
  • this decision method trusts the optimal solution X estimate ⁇ , ⁇ estimate 2, ..., ⁇ estimate k-1 obtained before that when finding the optimal solution of jfk. In other words, if there is an error in the estimation before X estimate k, there is a drawback of accumulating the error. As a result, the probability of decoding error may be worse than maximum likelihood determination using perfect MMSE.
  • Fig. 7 shows a transmitter suitable for the present invention.
  • 7 includes a vertically polarized wave transmission unit 1 1, a horizontal polarization transmission unit 1 2, a vertical polarization and horizontal polarization polarization shared unit 1 3, a vertical polarization antenna 1 5, and a horizontal polarization antenna. It consists of 1-6.
  • the vertically polarized wave transmitter 1 1 has N row vectors (f, f f f ⁇ '.' F N—i SN in the N-dimensional DFT matrix is a natural number greater than 4 and f ⁇ and for sending Kuchi' DOO signal, line base-vector f 2, the ⁇ ⁇ ⁇ f N -i and for transmission of the transmission data, f. is not used.)
  • Noso Rezoreto length M M is a Kronecker product with a horizontally polarized pilot signal of 2 or more and a transmission data for vertical polarization, and is transmitted from the vertically polarized antenna 15.
  • the horizontal polarization transmitter 1 2 has N row vectors (f 0 , f i f 2 ,...
  • N is a natural number of 4 or more, f . it was used as a transmission of the pilot signal, and the line base-vector f 2, the ⁇ ⁇ ⁇ f and for the transmission of transmission data, fi each a length M (M in not used.) is 2 It takes the Kronecker product with the horizontally polarized pi-port signal and the horizontally polarized transmission data of the above natural number) and transmits it from the horizontally polarized antenna 16.
  • any pilot signal can be used as the vertically polarized pilot signal and the horizontally polarized pilot signal.
  • the vertically polarized wave and horizontally polarized wave shared part 13 is a part shared by the vertically polarized wave transmission part 11 and the horizontally polarized wave transmission part 12.
  • Fig. 8 shows a receiving apparatus suitable for the present invention.
  • the receiver 20 shown in FIG. 8 includes a horizontally polarized wave receiving unit 21, a vertically polarized wave receiving unit 2 2, a vertical polarization and horizontal polarized wave sharing unit 2 3, a transmission line characteristic measuring unit 2 3 1, a vertical polarization It consists of a wave antenna 25 and a horizontally polarized antenna 26.
  • the horizontal polarization receiving unit 21 receives a horizontally polarized signal from among the signals transmitted from the transmission device 10.
  • the horizontally polarized wave receiver 22 receives a vertically polarized signal among the signals transmitted from the transmitter 10.
  • the transmission signal cannot be received as it is due to interference between polarizations in the transmission line. Therefore, the horizontal polarization receiver 2 1 and the vertical polarization receiver 2 2 are
  • the transmission line characteristic measurement unit 2 3 1 is the line vector f. And a horizontal polarization antenna 16 on the transmission side, a vertical polarization antenna 1 5 on the transmission side, and a horizontal polarization antenna 2 6 on the reception side based on the pilot signal transmitted using the row vector f 1. Determine the transmission characteristics including leakage wave components between the receiving side vertically polarized antennas 25.
  • the vertically polarized wave and horizontally polarized wave shared part 2 3 1 is a part shared by the vertically polarized wave receiver 2 2 and the horizontally polarized wave receiver 2 1.
  • the pilot signal is described as (1, 0,0,0, ..., 0).
  • the present invention can use a ZCZ (zero Correlation Zone Sequence) signal as a pilot signal.
  • a ZCZ signal When a ZCZ signal is used as a pilot signal on the transmitting side, it must pass through the matched filter of the ZCZ signal after passing through the f k ® IM matched filter on the receiving side.
  • the row vector of the N-dimensional DFT matrix includes the column vector of the N-dimensional DFT matrix, and this specification and claims are described.
  • a ZCCZ (zero crosscorrelation zone sequence) sequence signal having a length of N can be used.
  • N sets of N length ZCCZ matrices (N is a natural number of 4 or more) are referred to as ZCCZ matrix sets, and each ZCCZ matrix set is called a ZCCZ matrix set. This is called the row vector of the ZCCZ matrix.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)

Abstract

La présente invention concerne un dispositif émetteur équipé d'une unité d'émission à ondes à polarisation verticale (11), d'une unité d'émission à ondes à polarisation horizontale (12), d'une unité commune à ondes à polarisation verticales et horizontales (13), d'une antenne à ondes à polarisation verticale du côté émission (15), et d'une antenne à ondes à polarisation horizontale du côté émission (16). Ainsi, l'unité d'émission à ondes à polarisation verticale (11) effectue sur le vecteur de rangée f1 tiré des vecteurs de rangée N (f0, f1, f2,...fN-1; f1 étant affecté à l'émission d'un signal pilote, f2,..., fN-1 étant affectés à l'émission de données en émission, et f0 n'étant pas utilisé) d'une matrice de transformées de Fourier discrètes à N dimensions un produit de Kronecker avec un signal pilote à ondes à polarisation verticale. Puis cette unité d'émission effectue sur les vecteurs de rangée f2,..., fN-1 des produits de Kronecker avec les données en émission à ondes à polarisation verticale. L'unité d'émission réalise enfin l'émission à partir de l'antenne à ondes à polarisation verticale (15). De la même façon, l'unité d'émission à ondes à polarisation horizontale (12) effectue sur le vecteur de rangée f0 un produit de Kronecker avec les données en émission à ondes à polarisation horizontale, puis sur les vecteurs de rangée f2,..., fN-1 des produits de Kronecker avec les données en émission à ondes à polarisation horizontale, et enfin les émet depuis l'antenne à ondes à polarisation horizontale (16).
PCT/JP2008/052211 2007-02-05 2008-02-05 Procédé d'émission, procédé de réception, procédé de transmission, dispositif émetteur et dispositif récepteur WO2008099791A1 (fr)

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JP2008558080A JP5004974B2 (ja) 2007-02-05 2008-02-05 送信方法、受信方法、伝送方法、送信装置及び受信装置

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JP2007-026187 2007-02-05

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006082865A1 (fr) * 2005-02-02 2006-08-10 Naoki Suehiro Procede d'emission/de reception, procede de generation de sequences de signaux sans correlation periodique et dispositif de communication

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006082865A1 (fr) * 2005-02-02 2006-08-10 Naoki Suehiro Procede d'emission/de reception, procede de generation de sequences de signaux sans correlation periodique et dispositif de communication

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JP5004974B2 (ja) 2012-08-22

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