Coding and modulation apparatus using multi-dimensional non-uniform constellation

    公开(公告)号:US10511466B2

    公开(公告)日:2019-12-17

    申请号:US16093657

    申请日:2017-04-13

    Abstract: A coding and modulation apparatus and method are presented. The apparatus (10) comprises an encoder (11) that encodes input data into cell words, and a modulator (12) that modulates said cell words into constellation values of a non-uniform constellation. The modulator (12) is configured to use, based on the total number M of constellation points of the constellation, the signal-to-noise ratio SNR in dB and the number n of the dimension of the constellation, an n-dimensional non-uniform constellation from a group of constellations, wherein each constellation point of an n-dimensional constellation diagram is defined by an n-tupel of constellation values, said n-tupel of constellation values defining parameter settings of a transmission parameter used by a transmission apparatus for transmitting a transmission stream obtained by conversion of said constellation values.

    CONTROL DEVICE AND METHOD FOR USE IN A BROADCAST SYSTEM
    6.
    发明申请
    CONTROL DEVICE AND METHOD FOR USE IN A BROADCAST SYSTEM 有权
    用于广播系统的控制装置和方法

    公开(公告)号:US20150280861A1

    公开(公告)日:2015-10-01

    申请号:US14437417

    申请日:2013-11-22

    Abstract: A control device for use in a broadcast system includes a broadcast controller that controls a broadcast transmitter of the broadcast system that broadcasts broadcast signals in a coverage area for reception by terminals including a broadcast receiver and a broadband receiver, and a broadband controller that controls a broadband server of a broadband system that provides redundancy data to terminals within the coverage area. The broadband controller is configured to control the provision of redundancy data by the broadband server for use by one or more terminals which use the redundancy data together with broadcast signals received via said broadcast system for recovering content received within the broadcast signals and/or provided via the broadband system.

    Abstract translation: 用于广播系统的控制装置包括广播控制器,其控制广播系统的广播发射机,广播系统在广播接收机和宽带接收机的终端的广播区域中广播广播信号,以及宽带控制器, 向覆盖区内的终端提供冗余数据的宽带系统的宽带服务器。 宽带控制器被配置为控制由宽带服务器提供的冗余数据供一个或多个终端使用,所述终端使用冗余数据以及经由所述广播系统接收的广播信号,用于恢复在广播信号内接收的内容和/或经由 宽带系统。

    Receiver for receiving data in a broadcast system using redundancy data

    公开(公告)号:US10291353B2

    公开(公告)日:2019-05-14

    申请号:US15723537

    申请日:2017-10-03

    Abstract: A receiver for receiving data in a broadcast system includes a broadcast receiver that receives, via the broadcast system, a receiver input data stream including plural channel symbols represented by constellation points in a constellation diagram. A demodulator demodulates the channel symbols into codewords and a decoder decodes the codewords into output data words. A broadband receiver obtains redundancy data via a broadband system, the redundancy data for a channel symbol including one or more least robust bits of the channel symbol or a constellation subset identifier indicating a subset of constellation points including the constellation point representing the channel symbol. The demodulator and/or the decoder is configured to use the redundancy data to demodulate the respective channel symbol and to decode the respective codeword, respectively.

    RECEIVER FOR RECEIVING DATA IN A BROADCAST SYSTEM
    9.
    发明申请
    RECEIVER FOR RECEIVING DATA IN A BROADCAST SYSTEM 有权
    接收器用于接收广播系统中的数据

    公开(公告)号:US20150288553A1

    公开(公告)日:2015-10-08

    申请号:US14435556

    申请日:2013-11-26

    Abstract: A receiver for receiving data in a broadcast system includes a broadcast receiver that receives via the broadcast system a receiver input data stream including plural channel symbols represented by constellation points in a constellation diagram, a demodulator that demodulates the channel symbols into codewords, and a decoder that decodes the codewords into output data words. A redundancy calculator determines a required amount of redundancy data required for correct demodulation and decoding by use of the originally received channel symbol and additional redundancy data. A broadband request unit requests, if demodulation of a channel symbol and/or decoding of a codeword is erroneous or likely to fail, a required amount of redundancy data via a broadband system, that is received by a broadband receiver via said broadband system. The demodulator and/or the decoder is configured to use the redundancy data for demodulation and decoding, respectively.

    Abstract translation: 用于在广播系统中接收数据的接收机包括广播接收机,其经由广播系统接收包括由星座图中的星座点表示的多个信道符号的接收机输入数据流,将信道符号解调为码字的解调器,以及解码器 将码字解码为输出数据字。 冗余计算器通过使用原始接收的信道符号和附加的冗余数据来确定正确解调和解码所需的冗余数据所需的量。 宽带请求单元如果通道符号的解调和/或码字的解码是错误的或可能失败,则通过宽带系统通过宽带接收机经由所述宽带系统接收所需的冗余数据量。 解调器和/或解码器分别被配置为使用冗余数据进行解调和解码。

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