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一个基于空时分组编码的MIMO_OFDM通信系统的仿真设计。此系统包括QPSK调制解调，IFFT调制，空时编解码，基于训 练符号的信道估计等通信模块。(A space-time block coding based on the MIMO_OFDM communication system simulation design. This system consists of QPSK modulation and demodulation, IFFT modulation, space-time coding and decoding, based on training symbols such as communication channel estimation module.)

本代码是用四种不同的算法来实现多项式求和。(This code is used four different algorithms to achieve polynomial sum.)

这是Simulink仿真程序的模块图，可以借助这个学习基本的PID仿真程序(This is a block diagram of the Simulink simulation program can make use of this learning basic PID simulation program)

DS扩频通信DS spread spectrum communicationDS spread spectrum communication(DS spread spectrum communicationDS spread spectrum communicationDS spread spectrum communicationDS spread spectrum communicationDS spread spectrum communicationDS spread spectrum communicationDS spread spectrum communicationDS spread spectrum communication)

基于S函数BP神经网络的PID控制器的研究与学习，方便简单，实用性特别强。(S function based on BP neural network PID controller research and study, convenient and simple, practical particularly strong.)

针对传统α － β 滤波算法不够有效跟踪机动目标的问题， 详细分析了其内在原因， 提出一种改进的α － β 滤波算法。该算法不需要假定目标的机动模型， 而是将目标的机动加速度作为滤波状态直接估计出来， 将估计加速度作为输入控制量引入到传统α － β 滤波器的状态估计方程中进行机动目标的跟踪。然后将它与传统α － β 滤波算法进行比较， 证明了新的算法不仅具有传统算法计算量小的优点， 而且还可以对机动目标进行实时跟踪。仿真结果表明， 新算法在综合性能上明显优于传统算法。(In view of the problem that the traditional alpha beta filtering algorithm is not effective in tracking the maneuvering target, the internal reason is analyzed in detail, and an improved alpha beta filtering algorithm is proposed. In this algorithm, the maneuvering model of the target is not assumed, but the maneuvering acceleration of the target is estimated directly as the filter state, and the estimated acceleration is introduced into the state estimation equation of the traditional alpha beta filter to track the maneuvering target in the state estimation equation of the traditional alpha beta filter. Then compared with the traditional alpha beta filtering algorithm, it is proved that the new algorithm not only has the advantages of small computation in the traditional algorithm, but also can track the maneuvering target in real time. The simulation results show that the new algorithm is superior to the traditional algorithm in terms of comprehensive performance.)

Implementing school time table using GA

code for neural network classifier

FUZZY CONTROL LOGIC for CAR HOVER PROE

matlab连接数据库SQL，然后打开数据库表格，并读取表格中的数据，进而对数据库进行操作(matlab connect to the SQL, and then open the table, and read the data in the table, then the operations)