introduction-of-MATLA

协作频谱感知虽然可提高系统的感知性能， 但随着感知节点数目的增加， 系统资源的占用越来越多， 系统传输效率下降． 分析了协作频谱感知方法的感知性能， 得到协作频谱感知的感知性能与感知节点数目和接 收信噪比之间的关系， 提出了一种新的次级用户节点的选择方法， 该方法有效保证了所选择节点的感知性能， 仿真验证了该算法的有效性和可靠性．(Although the cooperative spectrum sensing can improve the perceived performance of the system, but with the perception of the number of nodes increases, more and more system resources, the system transmission efficiency decreased. Cooperative spectrum sensing method of analysis of the perceived performance of collaborative spectrum sensing by the perception of performance and perception of the number of nodes and the relationship between the received SNR, a new secondary user node selection method, which effectively guarantee perceived performance of the selected node, the simulation proves the validity and reliability.)

求传递函数的一般格式，通过该程序，我们基本上能写出求任意的传递函数的式子(The general format of the transfer function of demand。Through this program, we can write the formula basically seeking arbitrary transfer function)

Chapter 5 - Linearization

实现DV-Hop定位算法的仿真,自动生成一定节点数的随即分布图，给出仿真结果的各点定位误差，用曲线图形显示，并可以计算平均误差。(DV-Hop simulation. Produce a randomly distributed nodes and then simulate and give the location error of each node, showing it in figure, and calculate the average error. )

该程序用来实现Turbo编解码，而Turbo码是一种信道编码、且是一种纠错码，可以保证信息的传输质量,本程序是用matlab实现的!(The procedure used for Turbo coding and decoding, while the Turbo code is a channel coding, and is an error-correcting codes, can guarantee the quality of information transmission, the process is achieved using matlab!)

说明：  《MATLAB 7.0编程基础基础》源程序，适合初学者使用，第二章(&quot MATLAB 7.0 programming foundation base&quot source, suitable for beginners, II)

舰船辐射噪声的产生，可利用其模拟舰船辐射噪声，从而达到定位等目的(generation of Ship radiated noise)

通过学习BP神经网络技术，对手写数字进行识别，基于结构的识别法及模板匹配法来提高识别率。(Through the study of BP neural network technology, digital handwriting identification, structure-based identification method and template matching method to improve the recognition rate.)

步进频信号处理模型，从信号产生到信号处理过程，到输出(step frequency)

MATLAB命令大全 Matlab常用的命令，按照字母顺序排列的，带解释，比较实用。(MATLAB command Matlab command, in alphabetical order, with explained.)