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仿真MIMO系统，采用STBC编码，发射天线数目为2，接收天线数目为2(The MIMO system is simulated with STBC coding, the number of transmit antennas is 2, and the number of receiving antennas is 2)

用Visual C++的API函数来打开、关闭串口和设置串口通讯速率等功能。(Visual C++ using the API function to open and close the serial port and set up features such as serial communication rate.)

说明：  自己用的小软件，仿造原子的XCOM功能，加了一下自己用的功能。 1、基本串口通讯，鼠标放入串口选择自动刷新，显示COM口的驱动类型。 2、多条发送界面，可定时发送，可关联数字键盘、右键发送按钮可更改按钮名称，方便记忆。 3、485通讯，数据有十进制和十六进制可选，发送后自动保留记录。 4、CRC校验小工具。 5、十六进制通信协议提取部分位并根据自定义数据类型转化为十进制 6、字符格式示波器，例：">P:-1.25"，示波器显示曲线名称P，数值-1.25，曲线个数最多8个。 7、类似MODBUS协议截取第2-5位，合成一个int数值，然后示波器显示波形，最多5个曲线 8、示波器曲线可键拖拽、放大(QT serial port assistant, plus digital oscilloscope)

MIMO-OFDM降低PAPR的SLM算法(MIMO-OFDM algorithms reduce the PAPR of the SLM)

说明：  系统分别对无线通信中的几种重要的多址接入协议进行了仿真,包括pure-ALOHA,slotted-ALOHA,CSMA以及(Several important multiple access protocols in wireless communication are simulated by the system, including pure-ALOHA, slotched-ALOHA, CSMA, and the like.)

一种基于遗传算法的OFDMA系统的跨层资源分配(Cross-layer resource a genetic algorithm-based allocation of OFDMA system)

说明：  51MODBUS从机程序源码希望对有用的人有用，，(51MODBUS,welcom to here,thank you very mouch.)

基于梳状导频的LS信道估计算法与无信道估计算法性能对比(Performance Comparison between LS Channel Estimation Algorithm and Channelless Estimation Algorithm Based on Comb Pilot)

D2D通信实现资源分配算法的有关代码，用于提高下一代蜂窝网络中的频谱利用率的解决方案是设备到设备D2D(Device to Device）通信。(D2D communication implements code related to resource allocation algorithms. The solution for improving spectrum utilization in next generation cellular networks is device-to-device D2D (device-to-device) communication.)

说明：  8. 单径瑞利信道中的四发四收V-BLAST： (1) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量16QAM调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线。 (2) 计算所设计方案的频谱效率是多少，单位为bit/Hz/s。(8. Four transmit four receive v-blast in single-path Rayleigh channel: (1) please design a specific navigation-assisted channel estimation method and conduct simulation with Simulink to measure the bit error rate performance of 16QAM modulation.The relation curve between the bit signal-noise ratio and the mean square error of channel estimation is drawn, and the relation curve between the bit signal-noise ratio and the bit error rate is drawn. (2) calculate the spectral efficiency of the designed scheme in bit/Hz/s.)