OFDM_MATLAB

说明：  双稳态随机共振的一个仿真，随机共振的弱信号检测，运用朗格万方程进行MATLAB的仿真。(Simulation of a bistable stochastic resonance , stochastic resonance in weak signal detection , the use of Lange Wan equation for the MATLAB simulation)

线性反馈化仿真。 包括控制器设计过程及仿真代码.(Linear feedback simulation. Including the controller design process and simulation code.)

DTMF(双音多频)是用两个特定的单音频组合信号来代表数字信号的一种编码技术。两个单音的频率不同，代表的数字或实现的功能也不同。可采用8种频率代表电话机上的16个按键，10个数字键0~9和6个功能键*、#、A、B、C、D。具体的频率组合见参考书。要求： (1) 根据键盘输入的符号，利用MATLAB产生对应的DTMF信号；(2) 分别利用FFT算法和Goertzel算法计算该DTMF信号的频谱并画出频谱图；(3) 根据频谱图确定DTMF信号所代表的符号是否和输入的符号一致。 (DTMF (Dual Tone Multi-Frequency) is a single with two specific combination of audio signals to represent a kind of digital signal coding techniques. Two monosyllabic different frequency, on behalf of the numbers, or the realization of the functions are also different. Eight kinds of frequency of use on behalf of telephone on the 16 keys, 10 numeric keys 0 ~ 9 and 6 function keys*,#, A, B, C, D. The frequency of specific composition of reference books. Requirements: (1) According to the keyboard input of symbols, the use of MATLAB have a corresponding DTMF signal (2), respectively, using FFT algorithm and the Goertzel algorithm DTMF signal spectrum and frequency spectrum draw (3) According to DTMF signal frequency spectrum to determine represented by symbols and input symbols unanimously.)

delta modulation source code

MATLAB学习与应用，便于同学掌握其相关功能，实现在学习中熟练应用(Learning and application of MATLAB to facilitate the students to master their related functions, to achieve proficiency in the application of learning)

APPROXIMATE MESSAGE PASSING ALGORITHM

能够读取二维码，经过改造可以为己所用~~~~~~(The ability to read two-dimensional code, revamped for their own use ~ ~ ~ ~ ~ ~)

此程序为matlab的关于辐射增强的一段代码，已经用于开发的软件中(This procedure matlab section on the radiation code has been used to develop the software)

基于统计模型（CS）的IMM-kf，程序简单实用(Based on statistical models (CS) of the IMM-kf, simple and practical procedure)

Finally it is observed that by using this filter, the common mode noise level of 2MHz resonant converter is suppressed according to CISPR 22 standard limits