略谈matlab中S函数的概念及使用_files

横润科技《MATLAB的S-Function编写指导>>(MATLAB the S-Function written guidance)

一些基本的matlab编程实验及程序，用MATLAB进行信号与系统分析，信号与系统的数值化处理，工程应用基石：函数与工具箱(Some basic matlab programming experiments and procedures, numerical processing of signals and systems analysis, signals and systems using MATLAB, the cornerstone of engineering applications: function and toolbox)

这是一个研究水下通信最新研究成果对应得源代码。(源程序参考文献：Stochastic Replay of non-WSSUS Underwater Acoustic Communication Channels Recorded at Sea)

说明：  非线性动力学控制理论中的相图和分岔图绘图代码(Drawing Code for Phase Diagram and Bifurcation Diagram of Nonlinear Dynamics Theory)

该程序是基于Kalman Filter 理论编写的基本的Matlab 滤波程序！(This code is relative with the basic Kalman Filter.)

Matlab在图像处理与目标识别方面的应用实验程序示例。包括三个程序以及详细文档：一、染色体识别与统计，二、汽车牌照定位与字符识别，三、基于BP神经网络识别字符的简单实验(Matlab image processing and target recognition in the application of experimental procedures for example. Consists of three procedures, and detailed documentation: a, chromosome identification and statistics, two license plate location and character recognition, 3, based on BP neural network character of the simple experiment)

码分多址(CDMA)技术作为第三代移动通信系统的核心技术，具有容量大、抗干扰能力强等优点。然而,传统的CDMA系统属于窄带扩频系统,它的数据速率比较低,不能胜任新一代移动通信系统 （beyond 3G）高速数据通信的需要。而多载波传输技术－正交频分复用（OFDM），作为后三代移动通信的核心技术，则具有高数据速率传输的特点。(Code Division Multiple Access (CDMA) technology as the third generation mobile communication system' s core technology, high capacity, anti-interference ability and so on. However, the traditional narrow-band CDMA system is spread spectrum system, and its relatively low data rate, can not do next-generation mobile communication systems (beyond 3G) high speed data communication needs. The multi-carrier transmission technology- orthogonal frequency division multiplexing (OFDM), after three generations of mobile communications as a core technology, the high data rate transmission characteristics.)

认知无线电频谱感知中的单用户频谱感知的主要三种方法：能量检测，循环平稳特征检测，匹配滤波器检测 的matlab实现的源代码(cognitive radio spectrum sensing：Energy detection, cyclostationary feature detection, matched filter detection 。matlab the source code)

说明：  针对多种光栅，传输谱反射谱进行仿真，同时对反射谱加入切趾函数抑制旁瓣，MATLAB仿真(For a variety of gratings, the transmission spectrum reflection spectrum is simulated, and the apodization function is added to the reflection spectrum to suppress side lobes, MATLAB simulation)

This m file performs the CDMA coding and decoding.