370511

matlab实现STBC的MIMO-OFDM的系统级仿真(Simulation of STBC MIMO-OFDM System with MATLAB)

说明：  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. .)

OFDM系统的LS和DFT信道估计的算法分析比较(LS and DFT OFDM system channel estimation algorithm analysis and comparison)

AM调制系统的设计及仿真，包括载波信号，载波信号频谱，调制信号，调制信号频谱等图像(Design and Simulation of AM modulation and demodulation)

说明：  基于MATLAB编程实现m序列、gold序列、kasami小集序列，并分析各自的自相关，互相关性能。(Based on MATLAB programming, m-sequence, gold sequence and Kasami small set sequence are realized, and their autocorrelation and cross-correlation performance are analyzed.)

vc++开发的socket通信类（含客户端和服务端）(socket communication(include client and server))

说明：  移动通信网络优化新解决方案_基站覆盖延伸系统的原理及应用(The new mobile communication network optimization solutions for base station coverage extension of the system _ Principle and Application)

读取SHT20的数据发送到主控STM32F103vet6(Read data from SHT20 and send it to master STM32F103vet6)

可用于无协议串口调试和标准Modbus调试。例案：单片机无协议通信、变频器通信调试、PLC及工业仪表通信调试。(No agreement can be used for standard Modbus serial debugging and debugging. Example case: no agreement on single-chip communications, Converters debug communications, PLC and industrial instrumentation communication debugging.)

Security in Mobile Ad Hoc Networks