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本文描述压缩了的ＨＤＴＶ信号地面数字传输的一种方法．首先分析地面电视广播信道的多径干扰模型，提出具有代表性的信道参数．其次讨论格状编码３２ＱＡＭ／１６ＱＡＭ，选定编码器结构使之具有很好的性能／复杂性折衷．ＬＭＳ算法自适应横向均衡器用于克服多径衰落引起的码间干扰．研究在加性噪音和多径干扰下ＨＤＴＶ传输系统的误码性能．计算机模拟结果表明系统性能良好．
This article describes a method of terrestrial digital transmission of compressed HDTV signals. Firstly, the multipath interference model of terrestrial television broadcasting channel is analyzed and the representative channel parameters are proposed. Next is a discussion of trellis-coded 32QAM / 16QAM, which has a very good performance / complexity compromise with the chosen encoder structure. LMS adaptive horizontal equalizer is used to overcome intersymbol interference caused by multi-path fading. The error performance of HDTV transmission system under additive noise and multipath interference is studied. Computer simulation results show that the system performance is good.