voice-signal-analysis

说明：  利用三种方法解决Volterra的两个种群的生态学问题。(Volterra use three methods to solve the problem of two populations of Ecology.)

说明：  这个代码是关于神经网络的matlab代码，我觉得效果不错。(This code is on the neural network matlab code, I think good results.)

matlab中的光学工具，实现光学仿真实例源代码(matlab optical tool)

高功率双包层光纤激光器及仿真,端面抽运的掺Yb双包层光纤激光器的基本理论及其仿真(High power double clad fiber lasers and simulation, end-pumped Yb-doped double-clad fiber lasers basic theory and simulation)

用于场景分类的代码，特征是事先提取好的，用PHOG特征(For scene classification code, characterized in that prior extraction good PHOG characterized)

computer vision toolkit tutorial

说明：  OFDM是将高速串行数据分成成百上千路并行数据,并分别对不同的载频进行调制,这种并行传输体制大大扩展了符号的脉冲宽度,提高了抗多径衰落的性能。同时,在传统的频分复用方法中,各子载波之间的频谱互不重叠,频谱利用率较低。而采用OFDM技术,一个OFDM符号之内包括多个经过调制的子载波的合成信号,每个子载波在频谱上相互重叠,这些频谱在整个符号周期内满足正交性,因而在接受端可以保证无失真恢复,从而大大提高频谱利用率。(OFDM divides high-speed serial data into hundreds of parallel data channels and modulates different carrier frequency separately. This parallel transmission system greatly expands the pulse width of symbols and improves the performance of anti-multipath fading. At the same time, in the traditional method of Frequency Division multiplexing, the spectrum between the sub-carriers does not overlap each other, the spectrum utilization ratio is low. In the case of OFDM, an OFDM symbol consists of multiple modulated sub-carriers, each of which overlaps in the spectrum, which is orthogonal throughout the symbol period, thus, no distortion recovery can be ensured at the receiving end, thus greatly improving the spectrum utilization ratio.)

compares ed for different wireless channels

平面波展开法求解二维光子晶体能带结构源程序(Two-dimensional plane wave expansion method to photonic crystal band structure)

能够非常清楚的看出幅值和时间的变化规律，不用再画时、频图(Can very clear indication of the amplitude and the change of time rule，Don t draw, frequency chart)