msk的很齐全的资料，有msk的多种调制解调算法，功率谱密度函数-msk very complete information, there are a variety of modulation and demodulation algorithm msk, power spectral density function, etc.

Mutual information is useful to calculate a set of procedures, Calculating a target and ocean echo power spectral density, Based on wavelet transform digital watermarking algorithm matlab code.