逆矩阵相关算法，包括svd求奇异矩阵，高斯约旦法等-inverse matrix algorithms, including seeking SVD singular matrix, Jordan and France as Gaussian

OFDM系统的不同编码如BPSK，QPSK，mQAM等在瑞利信道或高斯信道中传播的特性曲线分析。-The different coding of OFDM system in Rayleigh channel, or Gaussian channel spread features such as BPSK, QPSK, mQAM curve analysis.