Q212

实现局域网内的通讯。类似于QQ聊天室可以群聊(Communication within a LAN.)

说明：  MATLAB代码，产生GNSS导航信号BOC调制的相关频谱特性(The generate of BOC signal AND ITS PDF)

数据辅助定时同步算法T.Schmidl 和D.Cox,Park&Cheon和minn(Data-Assisted Timing Synchronization Algorithms T.Schmidl and D.Cox, Park&Cheon and Minn)

利用MATLAB实现多用户的扩频通信的发送和接受，程序可以直接跑，不需要改动！(The use of MATLAB implementation of multi-user spread spectrum communication send and receive, the program can be directly run, no changes!)

利用matlab实现ASK和FSK调制解调过程对比他们的不同(Using MATLAB to realize the modulation and demodulation process of ASK and FSK, their differences are compared.)

CAREL控制器通讯协议，通过这个文件即可编写自己carel控制器监控程序(CAREL DLL_LIBRARY32_2.1)

3抽头迫零均衡器，5抽头迫零均衡器，以及恢复信号波形(3-tap zero forcing equalizer, the 5-tap zero forcing equalizer, and the restoration of the signal waveform)

ldpc编码，完整的编解码过程，并有多个编码实例(LDPC codes, the complete codec process and a number of coding examples)

说明：  近两天由于研发需要OPNET这个仿真软件，同时要求可以支持wimax仿真模型，对该仿真软件的研究还需要继续进行 好不容易在网络上找到了最新版的OPNET 14.5的软件，但是安装的确出现了很大的麻烦，最后通过查阅网络上对之前版本安装的经验解决了安装过程中的问题，因此将这些分享给大家： (Almost two days because of this R &amp D needs OPNET simulation software, also required to support wimax simulation model, the simulation software is also the need to continue the network finally found the latest version of the OPNET 14.5 software, but certainly there was an installation much trouble, and finally access to the network through the installation of the experience of the previous version to solve the problems during the installation process, it will share all of these:)

说明：  ISD1420为美国ISD公司出品的优质单片语音录放电路,由振荡器,语音存储单元,前置放大器,自动增 益控制电路,抗干扰滤波(ISD1420 is a high-quality single chip voice recording and playback circuit produced by ISD Company of the United States. It consists of oscillator, speech memory unit, preamplifier, automatic gain control circuit and anti-jamming filter.)