Correction

OFDM很容易在具有时延扩展或等效频率选择性的信道上使用。 频率选择性信道的特征在于延迟扩展或相干带宽，其测量频率中的信道去相关。 相干带宽与均方根（RMS）时延扩展成反比。 通过选择与信道相干带宽相关的子载波间隔，OFDM可以用于将频率选择性信道转换成频率平坦子信道的并行集合。 适合于平坦衰落信道的技术可以直接应用。(OFDM is simple to use on channels that exhibit time delay spread or, equivalently, frequency selectivity. Frequency selective channels are characterized by either delay spread or coherence bandwidth which measures the channel decorrelation in frequency. The coherence bandwidth is inversely proportional to the root-mean-square (rms) delay spread. By choosing the sub-carrier spacing properly in relation to the channel coherence bandwidth, OFDM can be used to convert a frequency selective channel into a parallel collection of frequency flat subchannels. Techniques that are appropriate for flat fading channels can then be applied in a straight forward fashion.)

induction motor servo drive

Material parameter estimation from S-parameter

IEEE9节点数据，可以用于电力系统潮流计算(IEEE9 node data can be used for power flow calculation)

基于有限元法求解二维边值问题的matlab程序(Based on the finite element method of two-dimensional boundary value problem matlab program)

Toeplitz矩阵的有关性质，用Matlab实现，有很强的参考价值。(Toeplitz matrices related to the nature, use Matlab to achieve, there is a strong reference value.)

有关matlab学习的ppt,内容很全面，希望对大家有点用处(For matlab learning ppt, the content is very comprehensive, I hope we are a bit useless)

洪水调节，根据试算法原理采用matlab编程。(Flood regulation, according to the principles of the test algorithm using matlab programming.)

修改版的matlab画K线的程序，实现了涨为红色，跌为绿色(Modified version of the matlab draw K-line procedures, the rose is red, or green )

关于MATLAB的一些应用实例，我同学编的，大家可以看一下-(About some application examples of MATLAB, my classmates series, we can look at-)