s_4FSK

说明：  wireless communication channels model

说明：  针对数字卫星常用的 7 种通信信号调制方式(QPSK、8PSK、16QAM、32QAM、64QAM、16APSK、32APSK)，对零中心归一化瞬时幅度谱密度最大值、四次方谱、幅度、高阶累积量四种特征参数进行了分析，提出了一种联合特征参数的信号调制识别方法．(Aiming at seven communication signal modulation modes commonly used in digital satellite (QPSK, 8PSK, 16QAM, 32QAM, 64QAM, 16APSK and 32APSK), four characteristic parameters of zero-center normalized instantaneous amplitude spectral density, quadratic spectrum, amplitude and high-order cumulant are analyzed, and a signal modulation recognition method of joint characteristic parameters is proposed. Method.)

在Matlab环境下用于计算CRC16的代码，本原多项式为X16+X15+X2+1，并提供测试文件。(In the Matlab environment for the calculation of CRC16 code, the primitive polynomial is X16+X15+X2+1, and provide the test file.)

无线通信瑞利信道仿真：使用复高斯滤波技术和近似多普勒扩展仿真瑞利衰落信道(Simulation of Rayleigh multipath fading Channel)

利用MATLAB来进行大气信道中的激光通信仿真，英文原版(Optical Wireless Communication Systems-system and chanel modelling with matlab)

人工神经网络的工具想函数一览表，可以查询很方便的(artificial neural network tool to the list of functions that can be very convenient inquiry)

Communications Protocol between records and measures or concentrator portable reading terminal

GSM网络的动态信道分配，对于初学这方面的同学有很大帮助(GSM network, dynamic channel allocation, for the beginner in this area of ​ ​ great help to students)

仿真了不同距离下的多径信道衰落模型，包含大尺度衰落和小尺度衰落。(The multipath channel fading model at different distances is simulated, including large scale fading and small scale fading.)

手机通过蓝牙上网不走GPRS流量，一定是很好的源代码，欢迎下载，现在此软件只能一个手机连接一台电脑上网！理论上可以七个手机同时连接一台电脑上网！有要研究七台手机连接一台电脑上网的请发邮件至 jodyyang@163.com反应大家加入！(Don t go through bluetooth phones Internet traffic, must be very GPRS good source, welcome to download this software, now only a mobile phone connection computer online! Seven cell phones can theoretically computer Internet connection! Have to study the daytime phone connection of computer net please email to jodyyang@163.com reaction!)