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WO2011096739A2 - Émetteur et récepteur de signal de radiodiffusion, et procédé d'émission et de réception de signal de radiodiffusion - Google Patents

Émetteur et récepteur de signal de radiodiffusion, et procédé d'émission et de réception de signal de radiodiffusion Download PDF

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Publication number
WO2011096739A2
WO2011096739A2 PCT/KR2011/000741 KR2011000741W WO2011096739A2 WO 2011096739 A2 WO2011096739 A2 WO 2011096739A2 KR 2011000741 W KR2011000741 W KR 2011000741W WO 2011096739 A2 WO2011096739 A2 WO 2011096739A2
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WO
WIPO (PCT)
Prior art keywords
mimo
signal
input signal
qam
transmission
Prior art date
Application number
PCT/KR2011/000741
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English (en)
Korean (ko)
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WO2011096739A3 (fr
Inventor
고우석
문상철
Original Assignee
엘지전자 주식회사
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Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Publication of WO2011096739A2 publication Critical patent/WO2011096739A2/fr
Publication of WO2011096739A3 publication Critical patent/WO2011096739A3/fr

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    • 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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/068—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission using space frequency diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/33—Arrangements for simultaneous broadcast of plural pieces of information by plural channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/71—Wireless systems
    • H04H20/72—Wireless systems of terrestrial networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • 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
    • H04L1/0041—Arrangements at the transmitter end
    • 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
    • H04L1/0045—Arrangements at the receiver end
    • 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
    • H04L1/0057—Block codes
    • H04L1/0058—Block-coded 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
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/09—Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/11—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits using multiple parity bits
    • H03M13/1102—Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
    • H03M13/255—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with Low Density Parity Check [LDPC] codes
    • 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
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • 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—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • 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 signalling, 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
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information

Definitions

  • FIG 6 illustrates an OFDM generator according to an embodiment of the present invention.
  • the OFDM demodulator 107100 of FIG. 8 may receive a broadcast signal of each path received through two antennas Rx1 and Rx2 and perform OFDM demodulation, respectively.
  • a block for demodulating a broadcast signal to be received through a first antenna Rx1 is called a first receiver 107100 and a block for demodulating a broadcast signal to be received through a second antenna Rx2 is a second receiver. It may be called 107200.
  • the first receiver 108100 and the second receiver 108200 may be referred to as a first OFDM demodulator and a second OFDM demodulator, respectively.
  • a polarity multiplexing MIMO scheme may be used as an embodiment.
  • FIG. 13A illustrates a case where the ratio of the basic frame and the NEW frame is N: 1.
  • the time taken for the receiver to receive the next NEW frame 113120-2 after receiving one NEW frame 113120-1 may correspond to n basic frame lengths.
  • a new_system_P1 symbol may be generated by modifying the structure of the P1 symbol of the existing transmission frame illustrated in A of FIG. 14.
  • the new_system_P1 symbol may be generated by modifying the frequency shift value f_SH for the prefix and postfix of the existing P1 symbol or by changing the length of the P1 symbol (T_P1C or T_P1B).
  • the parameters (sizes of f_SH, T_P1C, and T_P1B) used in the P1 symbol structure must also be appropriately modified.
  • the L1-pre signaling information may include information necessary for receiving and decoding the L1 post signaling information.
  • the following describes each field included in the table. The size of each field and the types of fields that can be included in the table can be added or changed according to the designer's intention.
  • the BWT_EXT field is a field having a size of 1 bit and may indicate whether bandwidth of an OFDM symbol is extended.
  • the SYSTEM_ID field is a field having a size of 16 bits and may indicate a system identifier.
  • the PLP_FEC_TYPE field is a field having a size of 2 bits and may indicate the FEC type of the PLP.
  • the FRAME_IDX field has a size of 8 bits and may indicate a frame index in a super frame.
  • the PLP_ID field is a field having a size of 8 bits and may be used to identify each PLP.
  • the MIMO encoder 201020 performs MIMO encoding on the plurality of input signals S1 and S2 to output the first transmission signal St1 and the second transmission signal St2 for MIMO transmission, and each of the output transmission signals is required signal processing. And may be transmitted through the first antenna 201030 and the second antenna 201040 through a modulation process.
  • the MIMO encoder 201020 may perform encoding on a symbol basis.
  • the MIMO encoding method the above-described SM technique and GC technique may be used.
  • the present invention proposes a new MIMO encoding method.
  • the MIMO encoder may MIMO encode a plurality of input signals using the MIMO encoding method described below.
  • MIMO encoder may also be referred to as MIMO processor hereinafter. That is, the MIMO encoder outputs a plurality of transmission signals by processing the plurality of input signals according to the MIMO matrix and the parameter values of the MIMO matrix proposed below.
  • the rotation angle changes according to the change of the encoding parameter a value, and the power distribution between the input signals S1 and S2 varies according to the value and angle of this parameter. Since the changed power distribution can be expressed as the distance between the symbol coordinates in the constellation, the input signals encoded in this way are represented by different constellations even though they have undergone the correlation channel at the receiving end, thereby being identified, separated, and recovered.
  • FIG. Suggest a method of optimizing the value of a so that each constellation has the same Euclidean distance as the constellation diagram 205050 of the received signal passing through the correlator channel is shown in FIG. Suggest.
  • Optimizing the Euclidean distance means placing the equal distances between adjacent symbols in the constellation of the signal, and also maximizing the minimum Euclidean distance in the constellation.
  • the constellation diagram 205050 of the received signal is a constellation diagram in which Euclidean distance is adjusted using a value as shown in Equation 5 below.
  • the BER performance is better than that of the first embodiment when the minimum Euclidean distance is narrower when the subset of GC is used in the first embodiment. Therefore, the following will propose a MIMO encoding method having better SNR performance or BER performance.
  • Equation 7 XOR operation is performed on the bit values assigned to the real part and the imaginary part of S1 in the input signals S1 (212010) and S2 (212020), respectively, and the sign of the real part and the imaginary part of S2 is determined according to the result.
  • the antenna 1 and the antenna 2 are respectively transmitted.
  • Received symbols of the coarse received signal 2212050 have gray mapping, so that the hamming distance between adjacent symbols in the constellation is not more than two, as shown in FIG.
  • FIG. 40 is a capacity / SNR chart comparing performance of a combination of modulation methods in a MIMO encoding method according to a third embodiment of the present invention.
  • the MIMO receiver includes an OFDM demodulator 45110, a frequency deinterleaver 45120, a frame parser 45130, a time deinterleaver 45140, a MIMO ML (Maximum Likelihood) detector 45150, a multiplexer (MUX: 45160), and a bit demultiplexer.
  • the time deinterleaver 45150, the multiplexer 45160, the bit deinterleaver 45170, and the FEC decoder perform reverse processing of the BICM module, and may be referred to as a BICM decoding module 45190 hereinafter.
  • the present invention proposes a method of distributing the divider 48040 between the demultiplexer 48010 and the symbol mapper 4480 so that the divider 48040 redistributes data so that the distribution of reliability is not concentrated.
  • the divider 48040 may not be additionally provided, and the operation of the divider 48040 may be additionally performed in the demultiplexer 48030.

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

Abstract

Selon un mode de réalisation de l'invention, un émetteur de signal de radiodiffusion comporte un codeur FEC (correction d'erreurs sans voie de retour) qui effectue un codage FEC sur des données; un démultiplexeur qui réordonne l'ordre des bits des données codées par codage FEC; un diviseur qui réordonne les bits réordonnés selon les types MAQ d'un premier signal d'entrée et d'un second signal d'entrée de manière à produire le premier signal d'entrée et le second signal d'entrée; une première et une seconde unité de mise en correspondance avec des symboles qui mettent en correspondance des symboles avec respectivement le premier et le second signal d'entrée de manière à produire respectivement un signal de symbole de type M-MAQ et un signal de symbole de type N-MAQ; un premier générateur de trame et un second générateur de trame qui génèrent des structures de trame respectivement du premier signal d'entrée et du second signal d'entrée; un codeur MIMO qui effectue un traitement MIMO sur le premier signal d'entrée et sur le second signal d'entrée de manière à produire un premier signal de transmission de type M*N-MAQ et un second signal de transmission de type M*N-MAQ; et un premier générateur MROF et un second générateur MROF qui effectuent une modulation MROF respectivement sur le premier signal de transmission et sur le second signal de transmission.
PCT/KR2011/000741 2010-02-04 2011-02-01 Émetteur et récepteur de signal de radiodiffusion, et procédé d'émission et de réception de signal de radiodiffusion WO2011096739A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30161310P 2010-02-04 2010-02-04
US61/301,613 2010-02-04

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WO2011096739A2 true WO2011096739A2 (fr) 2011-08-11
WO2011096739A3 WO2011096739A3 (fr) 2011-11-24

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EP1661346B1 (fr) * 2003-07-14 2008-07-30 NTT DoCoMo, Inc. Appareil et procede de production d'un signal multiporteuse a transmettre et appareil et procede de production d'un signal de sortie a partir d'un signal multiporteuse recu
KR101349731B1 (ko) * 2007-06-01 2014-01-13 한국과학기술원 다중 입출력 광대역 무선통신 시스템에서 신호 송수신 장치및 방법

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