work

主要是计算LD中光场的分布，以及在稳态条件下载流子的增益，属于稳态条件下简单的情况(Mainly calculated in LD light field distribution, and the steady-state condition downloading carriers gain, belonging to steady state conditions the simplest case)

如上图所示，定向耦合器由完全相同的直波导与弯曲波导构成，波 导芯为宽高比相同（均为 a） 的正方形， 其工作波长，波导材料 对 TE 模式的折射率，及圆弧形弯曲波导的半径 r 等参数如图所 示，若波长为 1550 nm， 归一化光功率为 1 的光波从直波导输 入，请选择适当的满足单模工作的波导宽度 a， 然后给出从圆形弯 曲波导输出的归一化光功率 P4与两波导边缘的间距 d(Directional coupler by the same straight and curved waveguides constituting the waveguide, waves Conducting core is the same aspect ratio (are a) square, its operating wavelength, the waveguide material The refractive index of the TE mode and the arc-shaped curved waveguide of radius r and other parameters as shown Shown, if the wavelength of 1550 nm, normalized optical power a light straight waveguide input In, the appropriate work to meet the single-mode waveguide width a, and then is given a circular bend Curved waveguide output normalized optical power P4 and two edges of the waveguide spacing d)

matlab编写的dct变换及游程编码解码程序(matlab prepared DCT transform and run-length coding decoding procedures)

神经网络模型辨识及其MATLAB实现范例(Neural network model identification and implementation examples of MATLAB)

《小波分析理论与Matlab 7实现》书中每个章节的例程源代码，对初学者非常有用(" Wavelet analysis theory and Matlab 7 to achieve," the book each chapter of the routine source code is very useful for beginners)

说明：  提出了一种改进高阶Butterworth低通滤波器性能的设计方法。首先对高阶Butterworth低通滤波器的极点 进行重新分布，得出改进型Butterworth低通滤波器。性可以由其在基波电压初相位为零时的特性所唯一确定(Periodic voltage and current waveforms on the start time of its corresponding harmonic component of the relationship between the initial phase of research, pointed out that the characteristics of harmonic sources can be its initial phase in the fundamental zero-voltage characteristics of the CD a definite)

在高斯白噪声情况下，MSK的维特比解调程序(Gaussian white noise case, the Viterbi MSK demodulation process)

在matlab中用复合梯形方法求二重积分(Seeking a double integral in matlab using the composite trapezoidal method)

此程序为BPSK matlab仿真源代码，如有需要请谨慎下载(This program is BPSK matlab simulation source code, if necessary, download with caution)

根据输入的调制方式，对输入序列MOD_IN进行调制，分别采用BPSK, QPSK, !6QAM, 64QAM，完成对星座图的映射(According to the modulation input, the input sequence MOD_IN modulation, using BPSK. QPSK,! 6QAM, 64QAM, the completion of the mapping constellation)