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本文主要研究一种结构简单性能可靠的频域均衡方法。通过对频域自适应滤波器算法以及该算法初始化问题的研究,给出了一种可以有效应用与ATSC标准接收机的频域均衡器结构,并且仿真分析了影响该均衡器性能的几个关键因素以及其与传统的判决反馈均衡器的性能差别,从仿真结果来看,自适应的频域均衡器可以在得到与判决反馈均衡器近似的性能,在计算量上具有很大优势,为将来的多标准数字电视接收机提供可行性参考。
This paper mainly studies a frequency domain equalization method with simple structure and reliable performance. By studying the algorithm of frequency domain adaptive filter and the algorithm initialization, a frequency domain equalizer structure which can effectively use with ATSC standard receiver is given, and several key factors affecting the performance of the equalizer are simulated and analyzed Factor and its performance with the traditional decision feedback equalizer performance differences, from the simulation results, the adaptive frequency domain equalizer with the decision feedback equalizer approximate performance, in terms of the amount of computing has great advantages for the future Multi-standard digital television receiver to provide a viable reference.