利用伪随机序列作为发送信号 dppl

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.)

实现单载波频域均衡 MMSE 并进行了一定的改进(Single-carrier frequency domain equalization MMSE and some improvements)

关于天线原理的PPT。等同于教科书。很全。(PPT of antenna principle.Can be used as teaching book. A complete one.)

这个文件是讲大规模MIMO的scm模型的。代码容易看看懂(this document descpbe)

说明：  实现LTE系统级仿真，MIMO系统仿真，16QAM仿真(Implementare la simulazione a livello di sistema LTE)

This m file models a DPSK UWB system using a delay in one leg

使用usrp和gnuradio接收AM信号的代码，还有AM发送的信号以及说明的pdf(Receiving AM Signals from Data Files,python code,document)

数字信号处理相关实验，包括求系统零极点，快速傅里叶变换，长序列卷积，FIR，IIR等。(Digital signal processing related experiments, including zero and pole of the system, fast Fourier transform, long sequence convolution, FIR, IIR and so on)

服从瑞丽分布的多普勒频移的MATLAB仿真经典(MATLAB Simulation Classic of Doppler Frequency shift following Rayleigh Distribution)

说明：  对片内RAM进行读写操作，通过数据的写入和读出，对RAM的操作进行熟悉。(Read and write ram on chip, and get familiar with RAM operation through data writing and reading.)