SOMO

基于DCT离散余弦变换的JPEG数字图像压缩MATLAB程序。(Discrete cosine transform DCT-based JPEG image compression MATLAB.)

求系统串联滞后校正器传递函数的函数 ，其中sope是系统的开环传递函数，当key=1时，var为gama，是根据要求校正后的相角 稳定裕度计算之后校正器；当key=2时，var=wc，则是 根据要求校正后的剪切频率计算校正器。(Demand system is connected lag compensator transfer function of the function, which sope is the system open-loop transfer function, when key = 1 时, var is gama, is adjusted according to the phase angle required stability margin calculation after corrector when key = 2, var = wc, is the required shear frequencies after correction corrector.)

说明：  任务：设计一个4×2.5Gbit/s 长距离光纤传输系统，并利用OptiSystem 仿真验证。 要求： 1．采用波分复用技术，波长设置以100GHz 为间隔，频率分别为193.1THz、193.2THz、193.3THz、193.4THz，每个波长传输速率为2.5Gbit/s（NRZ），传输距离为300km。采用常规光纤，光纤损耗系数为0.25dB/km。 2．单通道光发送机最大输出功率为0dBm，光接收机的接收光功率不低于－26dBm，过载点为－10dBm。 3．可以采用EDFA 作为线路放大器，其中EDFA 的输入功率限制在－18～2dBm，最大输出功率20dBm，增益范围为13～25dB，噪声指数4.0dB。(Task: Design a 4 x 2.5 Gbit/s long-distance optical fiber transmission system, and use OptiSystem simulation to verify. Requirement: 1. Using wavelength division multiplexing technology, the wavelength is set at 100GHz intervals, with frequencies of 193.1 THz, 193.2 THz, 193.3 THz and 193.4 THz, respectively. The transmission rate of each wavelength is 2.5 Gbit/s (NRZ), and the transmission distance is 300 km. The loss coefficient of conventional optical fibers is 0.25dB/km. 2. The maximum output power of a single-channel optical transmitter is 0 dBm, and the receiving power of an optical receiver is not less than -26 dBm, and the overload point is -10 dBm. 3. EDFA can be used as line amplifier, where the input power of EDFA is limited to - 18-2dBm, the maximum output power is 20dBm, the gain range is 13-25dB, and the noise index is 4.0dB.)

已知某系统传递函数G，可以调用改代码对系统进行降阶处理。功能同routh降阶相似，不过这里的分子阶次r和分母阶次k可以不止相差1。(Known transfer function of a system G, can call the code to deal with reduced-order system. Routh Reduction with similar features, but here the molecular order r and the denominator order k can be more than a difference of 1.)

low_pass_filter_design_adaptive_modulation and demodulation

FIR WEINER FILTER IN MATLAB

我编写bppb的神经网络应用程序，第一次上传(of neural network applications, the first upload)

Matlab粒子群工具箱，实现优化计算中的粒子群算法功能(The Matlab Particle Swarm toolbox, particle swarm optimization calculation algorithm function)

MATLAB/Simulink通信系统建模与仿真中关于模拟调制信号的相关代码,包括AM,DSBSC,SSB,FM,FM的解调等代码.(MATLAB/Simulink communications system modeling and simulation of analog modulation signal code, including AM, DSBSC, SSB, FM, FM demodulation code.)

采用buck-boost双向DC-DC变换，实现脉冲充放电，输入Ts=1e-4 (The buck-boost bidirectional DC-DC conversion, pulse charge and discharge the input Ts, = 1e-4 )