中文说明：详细画出了时域和频域的相关图，已调制信号计算其普相关密度，采用的是脉冲对消法，采用了小波去噪的思想，LDPC码的完整的编译码，与理论分析结果相比。
English Description：
With painting out of the time domain and frequency domain correlation diagram has been modulated signal calculation relative density of the universal, the is pulse cancellation method, using wavelet denoising, the encoding and decoding of LDPC codes, and theoretical analysis results are compared.