Code_16QAM

多路复用写的一个可收发数据的串口应用程序(Write a multiplexer can send and receive serial data applications)

resource allocation in cognitive radio

在信号发送后，接收方需要实现位同步才能正确解码(after signal is sent, receiver need bit syn to decode correctly)

103规约，比较全 规约草案 103规约完IEC60870-5-103规约基本要点全版 ProtocolTester.exe 许继103通信规约TCP(many about IEC 103 protocol )

MATLAB，基于GUI的串口的调试工具，并将接收到的数据实时显示在坐标轴上。(MATLAB, the serial port of the GUI-based debugging tools, and data received in real time is displayed in the axis.)

说明：  GSM 物理层信道编码, 调制, 信道模拟, 同步搜索, 信道估计, 均衡解调, 信道译码(GSM physical layer channel coding, modulation, channel modeling, synchronization search, channel estimation, balanced demodulator, channel decoder)

说明：  通过labview实现通信信道仿真中的信道估计以及时域均衡，注意这个是以及完整实现了信道的搭建，通过添加时域均衡以及信道估计实现最终的仿真(The channel estimation and time-domain equalization in communication channel simulation are realized by labview. Note that this is to build the channel completely. The final simulation is achieved by adding time-domain equalization and channel estimation.)

uwb仿真，上传到上来给大家一个参考，希望能有帮助(UWB simulation, upload onto a reference to the U.S., hoping to have help)

针对GPS干扰特性，对GPS系统进行猛特卡落干扰仿真(GPS interference characteristics for the GPS system Meng tecka charged interference simulation)

说明：  5. 在三条径的瑞利信道中，对于直接序列扩频： (1) 请设计DS-CDMA一种具体的码分导引辅助的信道估计方法，接收机分别采用等均益合并、最大比合并。用Simulink进行仿真，画出比特信噪比与信道估计均方误差的关系曲线和比特信噪比与误码率的关系曲线。 (2) 设频率已经同步，请设计DS-CDMA一种具体的单停顿滑动相关时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。 (3) 设时间已经同步，请设计DS-CDMA一种具体的频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线。(5. In three-path Rayleigh channel, for direct sequence spread spectrum: (1) please design a specific code division navigation aided channel estimation method for ds-cdma, and adopt equal-beneficial combination and maximum ratio combination for receivers respectively.Simulink is used to simulate and draw the relationship curve between bit SNR and channel estimation mean square error and the relationship curve between bit SNR and bit error rate. (2) assuming that the frequency has been synchronized, please design a specific single-stop sliding correlation time synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and the acquisition probability curve. (3) if the time has been synchronized, please design a specific frequency synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and frequency synchronization error curve.)