periodogramse

此程序用数值分析方法绘制浅结晶体管的稳态热场分布图，一个基区上并连五个发射极条，热流密度近似为发射极条单位面积上的功耗，热沉温度恒定(Numerical analysis of this program for drawing shallow junction transistor static temperature distribution, on a base region and emitter with five articles, similar to the emitter heat flux per unit area on the power section, a constant heat sink temperature)

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 )

钱伯斯——三点迭代公式，同抛物线法一样可以求方程的根。(Chambers- 3:00 iteration formula, with the parabola method can still seek the root of equations.)

周期对称方波信号的傅里叶级数展开 有限项级数来逼近无限项级数(fourier series )

matlab程序：用最小二乘法拟合椭球曲面(matlab program: using least-squares fitting ellipsoid surface)

说明：  OFDM在AWGN信道下的仿真，用MATLAB实现，一共有6个程序。(OFDM AWGN under the simulation, using MATLAB, a total of six procedures.)

基于matlab的喷泉码的编码与解码实现，其中解码方式有GE,BP以及GEBP算法(Fountain matlab code based encoding and decoding achieve, including decoding methods are GE, BP and GEBP algorithm)

关于小波去噪的算法，总结性比较好，非常全，对初学者非常适用。( Wavelet denoising algorithm, summary is better, very full, very suitable for beginners.)

RBF 神经网络自适应逼近源代码，利用RBF神经网络对连续模型进行逼近(Source code about the RBF neural network adaptive approximation, and the RBF neural network is used to approximate the continuous model.)

说明：  算法应用于DOA估计，为典型music算法，仿真可通过！(The algorithm is applied to DOA estimation. It is a typical music algorithm. The simulation can be passed!)