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matlab上的OFDM系统仿真，完整的一套系统，已经测试过可以运行。(An ofdm system on matlab environment。)

摘要:正交频分复用(OFDM)是第四代移动通信的核心技术。该文首先简要介绍了OFDM基本原理,重点研究了理想同步情 况下,保护时隙(CP)和不同的信道估计方法在高斯信道和多径瑞利衰落信道下对OFDM系统性能的影响。在给出OFDM系 统模型的基础上,用MATLAB语言实现了整个系统的计算机仿真并给出参考设计程序。最后给出在不同的信道条件下,保 护时隙、信道估计方法对OFDM系统误码率影响的比较曲线,得出了较理想的结论。 (O FDM is the key techno logy of 4G in the field of mobile comm unication.In this article O FDM ba sic p rinc ip le is briefly in troduced.Then,the influence of CP and d iffe rent channe l e stim a tion on the system pe rfo rm ance is emp ha tica lly analyzed respectively in Gauss and R ayle igh fading channe ls in the cond ition of ideal synchronization.B e sides,based on the given system mode l O FDM system is compu te r sim u la ted w ith MA TLAB language and the refe rentia l design p rocedure is given.Fina lly,the B ER cu rves of CP and channe l e stim ation a re given and comp ared.The conclusion is sa tisfac to ry. )

GPS演示程序，比较TYPE2, DAMP2 and DAMP3 车辆模型。程序中仿真1.5公里90kph速度。来自电子书全球定位系统和惯性导航集成。

说明：  FM和PM的调制解调仿真源代码，已经调试通过。(FM and PM modulation and demodulation simulation source code has been debugged.)

shunt active filter full circuit

matlab实现层次分析法的m函数文件，只需要简单的输入比较矩阵，就可以算出最终的层析分析发比较结果(matlab implementation of AHP m function file, simply enter the comparison matrix, we can calculate the final results of the comparison of the chromatographic analysis of hair)

小波包分析提取振动信号中的特征频率，旋转机械二维全息谱计算，最小均方误差等算法的MSE的计算。( Wavelet packet analysis to extract vibration signal characteristic frequency, Rotating machinery 2-d holographic spectrum calculation, Minimum mean square error MSE calculation algorithm.)

无线通信调制解调用的verlog和matlab程序，很大很实用。(Wireless modem calls verlog and matlab program, very very practical.)

蒙特卡洛法对单个空间点的分析，及正态分布检测函数(Monte Carlo analysis method for a single point in space, and the normal detection function)

Matlab implementation of MIMO-OFDM channel estimation(LS and DFT channel estimation)