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DVB-T Digital Terrestrial Television Transmission over Fading Channels

机译:DVB-T衰落频道上的数字地面电视传输

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摘要

The paper deals with the transmission of the digital television signal according to the DVB-T standard in SFN network over fading channels for the fixed reception. The laboratory transmission system for the real broadcasting based on R&S RF test and measuring equipments is presented including the transmission parameters setup. The results of broadcasting over Gausian, Ricean and Rayleigh channels and results of the echo impairments are presented and discussed with the theory and simulation results. The BER before and after Viterbi decoding and according to MER equal to S/N ratio in the channel from the constellation diagram were compared in all transmission experiments. Additional picture quality evaluation is presented using DVQL-W metric that monitors blockiness structures in MPEG-2 compressed pictures and gives notice of known "cliff-off" effect.
机译:本文讨论了在固定接收的衰落信道上,SFN网络中根据DVB-T标准的数字电视信号的传输。提出了基于R&S RF测试和测量设备的真实广播实验室传输系统,包括传输参数设置。给出并讨论了通过高斯,赖斯和瑞利信道进行广播的结果以及回声损伤的结果。在所有传输实验中,比较了星座图中维特比解码之前和之后的BER以及根据MER等于信噪比的BER。使用DVQL-W度量提供了附加的图像质量评估,该度量监视MPEG-2压缩图像中的块状结构并发出已知的“倾斜”效果。

著录项

  • 作者

    Kratochvil T.; Stukavec R.;

  • 作者单位
  • 年度 2008
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  • 原文格式 PDF
  • 正文语种 en
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