ES2348760T5 - Aparato para la transmisión y recepción de una señal y método para la transmisión y recepción de una señal - Google Patents

Aparato para la transmisión y recepción de una señal y método para la transmisión y recepción de una señal Download PDF

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Publication number
ES2348760T5
ES2348760T5 ES08172467.6T ES08172467T ES2348760T5 ES 2348760 T5 ES2348760 T5 ES 2348760T5 ES 08172467 T ES08172467 T ES 08172467T ES 2348760 T5 ES2348760 T5 ES 2348760T5
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Prior art keywords
bits
signal
demultiplexed
symbols
reception
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Application number
ES08172467.6T
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English (en)
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ES2348760T3 (es
Inventor
Woo Suk Ko
Sang Chul Moon
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LG Electronics Inc
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LG Electronics Inc
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Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of ES2348760T3 publication Critical patent/ES2348760T3/es
Application granted granted Critical
Publication of ES2348760T5 publication Critical patent/ES2348760T5/es
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems
    • 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
    • H04L1/0064—Concatenated codes
    • H04L1/0065—Serial concatenated codes
    • 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
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • H04L1/0083—Formatting with frames or packets; Protocol or part of protocol for error control
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Error Detection And Correction (AREA)
  • Burglar Alarm Systems (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Radio Relay Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Description

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E08172467
04-12-2014
1/4, 1/3, 2/5 y 1/2, se pueden mapear los símbolos sin realizar el entrelazado de bits y la demultiplexación de bits. Si la tasa de código es 3/5, se pueden demultiplexar los bits según cualquiera de los identificadores de demultiplexación 9 y
10. Si la tasa de código es 2/3, 3/4, 4/5, 5/6, 8/9 y 9/10, se pueden demultiplexar los bits según el identificador de demultiplexación 6.
En el método de mapeado de símbolos 256QAM, si la tasa de código de la codificación de corrección de errores LDPC es 1/4, 1/3, 2/5 y 1/2, se pueden mapear los símbolos sin realizar el entrelazado de bits y la demultiplexación de bits. Si la tasa de código es 3/5, se pueden demultiplexar los bits según el identificador de demultiplexación 9. Si la tasa de código es 2/3, 3/4, 4/5, 5/6, 8/9 y 9/10, se pueden demultiplexar los bits según el identificador de demultiplexación 6.
Tal como se ha descrito anteriormente, el tipo de demultiplexación de bits puede variar según la tasa de código utilizada para la codificación de corrección de errores y el método de mapeado de símbolos. En consecuencia, se puede ajustar la capacidad de corrección de errores de un bit ubicado en una ubicación específica del bloque codificado con corrección de errores mapeando los subflujos demultiplexados a los símbolos. En consecuencia, es posible optimizar la robustez a nivel de bit.
La figura 34 es una vista que muestra un ejemplo de expresión del método de demultiplexación mediante una ecuación. Por ejemplo, si el método de mapeado de símbolos es QPSK, los bits de entrada (xi, XN/2+i) corresponden a los bits
demultiplexados y0 y y1. Si el método de mapeado de símbolos es 16QAM, los bits de entrada
⎞⎟⎟
⎛⎜⎜
x , x , x , x
2 N 3N in
+i +i +i
44 4
corresponden a los bits demultiplexados y0, y1, y2 e y3.
⎞ ⎟
⎛ ⎜
Si el método de mapeado de símbolos es 64QAM, los bits de entrada
x , x , x , x , x , x
4N 5N 2N 3N iN
+i +i +i +i +i
6666 6
corresponden a los bits demultiplexados y0, y1, y2, y3, y4 e y5. Si el método de mapeado de símbolos es 256QAM, los
⎞ ⎟
⎛ ⎜
bits de entrada
x , x , x , x , x , x , x , x
6N 7 N 4 N 5N 2N 3N iN
+i +i +i +i +i +i +i
888888 8
corresponden a los bits demultiplexados.
Aquí, N indica el número de bits mapeados a los símbolos con respecto a la entrada del dispositivo de entrelazado de bits.
La figura 35 es una vista que muestra un ejemplo de mapeado de un símbolo mediante un mapeador de símbolos. Por ejemplo, en el método de mapeado de símbolos QPSK, los símbolos de la constelación corresponden al valor del bit y0 del primer subflujo demultiplexado y al valor del bit y1 del segundo subflujo demultiplexado.
En el 16QAM, el eje real de los símbolos de la constelación corresponde a los bits del primer y tercer subflujos demultiplexados (bits separados de la ubicación del MSB por 0 y 2) y el eje imaginario de la misma corresponde a los bits del segundo y cuarto subflujos demultiplexados (bits separados de la ubicación del MSB por 1 y 3).
En el 64QAM, el eje real de los símbolos de la constelación corresponde a los bits del primer, tercer y quinto subflujos demultiplexados (bits separados de la ubicación del MSB por 0, 2 y 4) y el eje imaginario de la misma corresponde a los bits del segundo, cuarto y sexto subflujos demultiplexados (bits separados de la ubicación del MSB por 1, 3 y 5).
En consecuencia, los bits que configuran el símbolo se pueden mapear a la palabra de celda en el orden de demultiplexación. Si se demultiplexan los bits que configuran la palabra de celda, se cambian el MSB y el LSB de la palabra de celda y se puede ajustar la robustez de los bits aunque las fiabilidades de los bits codificados con corrección de errores LDPC varían de acuerdo con las ubicaciones.
La figura 36 es un diagrama de bloques que muestra un codificador MIMO/MISO según un ejemplo. El codificador MIMO/MISO codifica los datos de entrada utilizando el esquema de codificación MIMO/MISO y emite los datos codificados a varias rutas. Si un extremo de recepción de señal recibe la señal transmitida a varias rutas desde una o más rutas, puede adquirir una ganancia (también denominada ganancia de diversidad, una ganancia de carga útil o una ganancia de multiplexación).
El codificador MIMO/MISO -140-codifica los datos de servicios de cada ruta generados por el constructor de tramas -130-y emite los datos codificados al número A de rutas correspondientes al número de antenas emisoras.
La figura 37 es un diagrama de bloques que muestra un modulador según un ejemplo. El modulador incluye un primer controlador de potencia (PAPR Reduce1) -151-, una unidad de transformación en el dominio del tiempo (IFFT) -153-, un segundo controlador de potencia (PAPR Reduce2) -157-y un dispositivo de inserción de intervalos de guarda -159-.
El primer controlador de potencia -151-reduce un PAPR (relación de potencia pico-promedio) de los datos transmitidos
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Claims (1)

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ES08172467.6T 2008-02-04 2008-12-19 Aparato para la transmisión y recepción de una señal y método para la transmisión y recepción de una señal Active ES2348760T5 (es)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US2582308P 2008-02-04 2008-02-04
US25823P 2008-02-04
KR20080127315 2008-12-15
KR1020080127315A KR100937429B1 (ko) 2008-02-04 2008-12-15 신호 송수신 방법 및 신호 송수신 장치

Publications (2)

Publication Number Publication Date
ES2348760T3 ES2348760T3 (es) 2010-12-13
ES2348760T5 true ES2348760T5 (es) 2014-12-23

Family

ID=43304028

Family Applications (4)

Application Number Title Priority Date Filing Date
ES10168038T Active ES2388237T3 (es) 2008-02-04 2008-12-19 Método y aparato para transmitir una señal
ES08172467.6T Active ES2348760T5 (es) 2008-02-04 2008-12-19 Aparato para la transmisión y recepción de una señal y método para la transmisión y recepción de una señal
ES10168037T Active ES2388417T3 (es) 2008-02-04 2008-12-19 Procedimiento y aparato para recibir una señal
ES08872240T Active ES2386093T3 (es) 2008-02-04 2008-12-19 Aparato para transmitir y recibir una señal y método para transmitir y recibir una señal

Family Applications Before (1)

Application Number Title Priority Date Filing Date
ES10168038T Active ES2388237T3 (es) 2008-02-04 2008-12-19 Método y aparato para transmitir una señal

Family Applications After (2)

Application Number Title Priority Date Filing Date
ES10168037T Active ES2388417T3 (es) 2008-02-04 2008-12-19 Procedimiento y aparato para recibir una señal
ES08872240T Active ES2386093T3 (es) 2008-02-04 2008-12-19 Aparato para transmitir y recibir una señal y método para transmitir y recibir una señal

Country Status (13)

Country Link
US (1) US20110013718A1 (es)
EP (5) EP2238750B1 (es)
KR (2) KR100937429B1 (es)
CN (1) CN101933325B (es)
AT (3) ATE488925T1 (es)
DE (2) DE602008003570D1 (es)
DK (5) DK2228939T3 (es)
ES (4) ES2388237T3 (es)
HR (1) HRP20100518T4 (es)
PL (5) PL2228939T3 (es)
RU (1) RU2440690C1 (es)
SI (4) SI2238750T1 (es)
WO (1) WO2009099272A2 (es)

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HRP20100518T4 (hr) 2014-12-19
PL2086155T5 (pl) 2015-03-31
CN101933325A (zh) 2010-12-29
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SI2238750T1 (sl) 2012-09-28
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DK2228939T3 (da) 2012-08-20
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EP2238750A2 (en) 2010-10-13
EP2238750B1 (en) 2012-04-18
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KR20090085515A (ko) 2009-08-07
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EP2086155B1 (en) 2010-08-11
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ATE554557T1 (de) 2012-05-15

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