基于小波的数字信号成形技术

A Technology of Base-band Waveform Coding Based on Wavelet

本文提出了一种基于小波的基带波形成形结构,仿真结果显示,小波成形符合奈奎斯特脉冲成形理论。同时对几种不同的小波尺度函数,小波函数以及根升余弦函数作为成形波形进行了对比研究,结果显示某些小波函数及尺度函数具有比根升余弦函数更高的频带利用率。

This thesis describes wavelet-based coder-decoder(codec)structure for base band waveform coding.Simula- tion shows that wavelet-based coder-decoder obey the Nyquist pulse shaping condition.Compare with the function show that the bandwidth efficiency of some wavelet-based coder-decoder better than that of the raise roof cosine function.