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convolutional code and BER curves using soft dicision

数字图像处理中的有关线性变换，如角度变换等(Digital image processing of the relevant linear transformation, such as the perspective of transformation)

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. )

本程序是对遗传算法的改进实现，在遗传操作中的选择 复制 交叉部分做了改进。代码调试通过 可以通过宏命令修改迭代次数。(This program is the improvement of genetic algorithm implementation, the choice of operation in the replication of genetic cross-section are improved. Debugging through macro commands can be modified by the number of iterations.)

系统辨识方面的程序，主要是根据输入和输出信号进行参数的确认(Aspects of system identification procedures, mainly based on the input and output signal parameters of the recognition)

北大MBA会计学案例库(Beijing University MBA case study for accounting)

matlab 可视化 微分方程 物理 算法 超越方程 科学计算 数学变换 最值问题 图像增强 图形界面 线性方程 元胞自动机 晶体生长 金融(physical algorithm matlab visualization in scientific computing differential equations of mathematical transformations beyond the most value problem of linear equations graphical image enhancement of cellular automata Crystal Growth Finance)

说明：  均匀线阵常规波束形成仿真 假设条件 窄带(单频)； 远场平面波(目标距离远大于阵长)； 无多途干扰； 信号无多普勒，无畸变。(Simulation of conventional beamforming of uniform linear array)

TSP solved whit Genetic Algorithms in MATLAB GA toolbox

MATLAB-SIMULINK通信系统建模与仿真实例分析(MATLAB-SIMULINK communications system modeling and simulation analysis)