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正交频分复用是一种多载波宽带数字调制技术。相比一般的数字通信系统， 它具有频带利用率高和抗多径干扰能力强等优点，因而适合于高速率的无线通信系统。( OFDM Simulator -------------------------------------------------------------------------------- MIMO OFDM Simulator: OFDM.m: OFDM Simulator (outer function) create_channel.m: Generates a Rayleigh fading frequency-selective channel, parametrized by the antenna configuration, the OFDM configuration, and the power-delay profile. svd_decompose_channel.m: Since full channel knowledge is assumed, transmission is across parallel singular value modes. This function decomposes the channel into these modes. BitLoad.m: Apply the bit-loading algorithm to achieve the desired bit and energy allocation for the current channel instance. ComputeSNR.m: Given the subcarrier gains, this simple function generates the SNR values of each channel (each singular value on each tone is a separate channel). chow_algo.m: Apply Chow s algorithm to generate a particular bit and energy allocation. EnergyTableInit.m: Given the SNR values, form a table of energy increments for )

The code is a Matlab program which can be use to calculate the energy distribution of grating. The method used is RCWA method.

Arryindexing in matlab r2009

matlab 最速下降法与共轭梯度法在matlab中的实现(matlab CG)

Quantitative Image Recovery From Measured Blind Backscattered Data Using a Globally Convergent Inverse Method

常规PID控制器主要采用模拟PID控制器。这种控制器的控制规律是：根据给定值和输出值构成的偏差按比例、积分和微分通过线性组合构成控制量，对被控对象进行控制。(Conventional PID controller is used mainly analog PID controller. This controller is the control law: according to the given value and output value constitutes a deviation by proportional, integral and differential form by a linear combination of the amount of control, control of the controlled object.)

说明：  实现BP神经网络建模，并绘制误差曲线，包括实现数据的归一化与反归一化(Achieve BP neural network modeling and rendering error curve, including data normalization and anti-normalization)

本论文采用理论与实践相结合的方法，对用MATLAB去分析线性系统，解决线性系统中的复杂问题做了详细的描述并进行了教学实验仿真。论文的具体内容主要包括：线性系统的时域分析、频域分析和利用MATLAB求解几个方面。(This paper expounds the use of MATLAB software for linear system principle simulation experiment: the temporal domain analysis and analysis in frequency domination area of linear system , )

实现一维和二维分世界傅里叶变换，含有对LFM信号的实例仿真。(Realization of one and two dimensional Fourier transform divided world, contain instances of LFM signal simulation.)

编制一个统计特定单词在文本串中出现的次数和位置的程序(The preparation of a statistical specific words in the text string appear in the number and location of the procedure)