The wavelet transform is discussed in the code - width estimation ; and the feasibility and effectiveness of the code - width estimation using the spectrum of the bipolar base - band signal are proved 在参数估计中,主要讨论了小波变换算法在基带信号码元宽度估计中的应用以及利用双极性基带信号的频谱估计码元宽度的可行性和有效性。