a_project_of_mobile_compny

opnet学习资料，提供部分网络仿真模型。一:介绍OPNET 环境。二：执行M/M/1队列模型。三：以太网模型（Aloha，CSMA,CSMA－CD).四：TCP.五：OSPF(OPNET learning materials, providing part of the network simulation model. 1: Introduction OPNET environment. Second: The Executive M/M/1 queue model. III: Ethernet model (Aloha, CSMA, CSMA-CD). IV: TCP. 5: OSPF)

说明：  CDMA技术的原理是基于扩频技术，即将需传送的具有一定信号带宽信息数据，用一个带宽远大于信号带宽的高速伪随机码进行调制，使原数据信号的带宽被扩展，再经载波调制并发送出去。CDMA系统仿真，初学者(CDMA system simulation)

分析了 IEEE 802.15.4a的信道模型，并分析了现今测距的方法：CHAN与TAYLOR等，并在此基础上做了改进(Analysised the channel of IEEE 802.15.4a,and analysised some methods for TDOA and TOA . )

说明：  LED样例代码，原厂提供。凑够20个字才行吗？(Led sample code, provided by the original factory. Can you make up 20 words?)

LTE变采样滤波器的设计，应用在USRP平台，100M采样率变到30.72M采样率，以及30.72M采样率变换到100M采样率，文档说明，matlab源代码，以及性能仿真(LTE varying sampling filter design, used in USRP platform, 100M sampling rate changes to 30.72M sampling rate, and sample rate conversion 30.72M to 100M sampling rate, documentation, matlab source code, and performance simulation)

针对胖AP和瘦AP，描述WLAN通信的过程(It describes the process of AP based on Wlan)

线性迫零均衡器、最小均方误差均衡器。仿真结果包括星座图、眼图、差错性能曲线(Zero Forcing equalization; MMSE equalization;planisphere;eye pattern;BERcurve)

关于超宽带多用户检测的大家可看看，很好的程序(on Ultra-Wideband Multi-User Detection you can see, very good procedures)

HC6800EM3 v20原理图（电路图）(HC6800EM3 V20 schematic diagram (circuit diagram))

说明：  用MATLAB产生线性跳频信号，中心频率和带宽可调(Using MATLAB to generate linear frequency hopping signal with adjustable center frequency and bandwidth)