SPWM

D2D通信分为集中式控制和分布式控制。集中式控制由基站控制D2D连接，基站通过终端上报的测量信息，获得所有链路信息，但该类型会增加信令负荷(D2D communication is divided into centralized control and distributed control. Centralized control is connected by the base station. The base station obtains all link information through the measurement information reported by the terminal)

当今世界电子对抗日益激烈，对于雷达低截获和抗干扰能力的研究越来越受到关注。OFDM (Orthorgonal Frequency Division Multiplexing，正交频分复用)雷达具有大时宽带宽积、波形设计方法灵活、频谱利用率较高以及低截获性能好的特性，因此逐渐成为雷达领域的重点研究方向。除此之外，OFDM信号时域和频域波形都比较复杂，当雷达信号采用OFDM技术时，敌方很难精确估计发射信号波形和瞬时频率，使得截获机不容易分析出检测到的雷达信号。当面对敌方的欺骗式干扰时，对于同样具有大时宽带宽积的线性调频信号，OFDM信号具有更好的抗欺骗式干扰的性能，因此OFDM技术在雷达上的运用愈来愈得到关注。(As electronic warfare becomes increasingly fierce, low intercept probability radar has become an important research filed in electronic countermeasures. OFDM (Orthorgonal Frequency Division Multiplexing) radars have gradually emerged due to their high spectrum efficiency, large time-bandwidth product, flexible waveform design methods, and low intercept probability.In addition, because of the complex time-frequency characteristics of the transmitted signal in OFDM radar, the enemy is difficult to estimate the transmitted signal waveform and instantaneous frequency.When faced with enemy deception interference, OFDM signals have better anti-spoofing performance for LFM signals that also have a large time-bandwidth bandwidth product. Therefore, the use of OFDM technology in radar is attracting more and more attention. .)

说明：  实现扩频通信，包括了PN码同步，扩频调制解扩(Realize spread spectrum communication, including the PN code synchronization, spread spectrum modulation solution extender )

该算法实现了基于纹理特征的稀疏表示分类，代码注释清晰，容易理解(The algorithm implements the sparse representation based on texture features, and the code is clear and easy to understand.)

说明：  仿真Alamouti 的 BER 性能曲线（QPSK 调制）(Simulation BER of QPSK Alamouti STBC with two transmit and receive antenna)

TMS320F28335中文数据手册,非常难得的中文版数据手册。根据TI公色的数据手册翻译(TMS320F28335 Chinese data sheet, very rare Chinese version of the data sheet. According to TI male color data sheet translation)

matlab求解雷诺方程，里面的程序需要适当修改(matlab solving the Reynolds equation, which the program needs to be amended as appropriate)

此代码为使用SPI 用于实现28335控制AD9959输出信号的频率、幅度(This code uses SPI The Frequency and Amplitude of AD9959 Output Signal Controlled by 28335)

ORL-人脸库的pca算法程序。可以测试其人脸识别的时间和准确率(ORL-Face PCA algorithm library procedures. To test its face recognition time and accuracy rate)

对BPSK进行了仿真，包括模块仿真和程序源代码仿真，我这边可以运行(For BPSK by simulation, including the module source code simulation and simulation)