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    • 2. 发明公开
    • CONSTELLATION RATIO FOR A HIERARCHICAL MODULATION SIGNAL
    • 康宁医院调查研究所
    • EP2936756A4
    • 2016-08-10
    • EP13868899
    • 2013-12-23
    • SAMSUNG ELECTRONICS CO LTD
    • MOUHOUCHE BELKACEMMOURAD ALAINYUN SUNGRYULLEE HAKJUJEONG HONGSIL
    • H04L27/34H04L27/00
    • H04L27/0008H04L27/3488
    • A method of obtaining N values of a constellation ratio (alpha) for use when transmitting a hierarchical modulation (HM) signal comprises obtaining a model of the variation in a minimum signal-to-noise ratio (SNR) , as a function of alpha, required to provide a predetermined performance measure at a receiver ; selecting N target SNR values, and obtaining each of the N values of alpha, based on the model, by obtaining the value of alpha corresponding to each of the target SNR values. The model may be obtained by measurement or simulation. The performance measure can be e.g. bit error rate, packet error rate, or block error rate. Information identifying the selected value of alpha can be included in the transmitted signal. Applications include Digital Video Broadcasting (DVB), including Next Generation Handheld (NGH) systems.
    • 获得在发送分级调制(HM)信号时使用的星座比(α)的N个值的方法包括获得作为α的函数的最小信噪比(SNR)的变化的模型, 需要在接收机处提供预定的性能测量; 选择N个目标SNR值,并且通过获得与每个目标SNR值对应的α值,基于该模型来获得α的N个值中的每一个。 该模型可以通过测量或模拟获得。 性能测量可以是例如。 位错误率,数据包错误率或块错误率。 识别所选择的α值的信息可以被包括在所发送的信号中。 应用包括数字视频广播(DVB),包括下一代手持(NGH)系统。
    • 7. 发明公开
    • TRANSMITTING APPARATUS, RECEIVING APPARATUS, AND CONTROLLING METHODS THEREOF
    • ÜBERTRAGUNGSVORRICHTUNG,EMPFANGSVORRICHTUNG UND STEUERUNGSVERFAHRENDAFÜR
    • EP3020172A4
    • 2017-02-22
    • EP14834212
    • 2014-08-05
    • SAMSUNG ELECTRONICS CO LTD
    • HWANG SUNG-OHMOURAD ALAINYANG HYUN-KOOHWANG SUNG-HEE
    • H04L25/02H04L29/06
    • H04L69/22H04L45/74H04L69/16
    • A transmitting apparatus is provided. The transmitting apparatus includes: a baseband packet (BBP) generator configured to generate a BBP including a header and payload data; a frame generator configured to generate a frame including the BBP; a signal processor configured to signal-process the generated frame; and a transmitter configured to transmit the signal-processed frame. The header includes information about a type of the payload data, whether an additional header exists, a length of the payload data, and a Least Significant Bit (LSB) of the length of the payload data. Therefore, various types of data are mapped on a physical layer based on information included in the header, and data processing efficiency is improved.
    • 提供发送装置。 发送装置包括:基带分组(BBP)生成器,被配置为生成包括报头和有效载荷数据的BBP; 帧生成器,被配置为生成包括所述BBP的帧; 信号处理器,被配置为信号处理所生成的帧; 以及被配置为发送经信号处理的帧的发射机。 报头包括关于有效载荷数据的类型,附加报头是否存在,有效载荷数据的长度以及有效载荷数据的长度的最低有效位(LSB)的信息。 因此,基于标题中包含的信息,在物理层上映射各种类型的数据,提高了数据处理效率。