opnet-network

opnet仿真实例，里面有一些现成的例子可供使用。(opnet the simulation, which has some ready-made examples available.)

说明：  实现ldpc的编译码功能，译码算法使用的对数域bp译码算法(LDPC codec realize the function of decoding algorithm used in log-domain decoding algorithm bp)

雷达系统，雷达信号中频非相参积累的简单代码(Radar system, radar signal, intermediate frequency, non coherent accumulation, simple code.)

光纤通信基础知识，介绍了单模，多模光纤的特点(Optical fiber communication based on knowledge, introduction of the single-mode, multimode fiber characteristics)

stc15w408as的串口通信，串口通信助手收发数据(Stc15w408as serial communication, serial communication assistant send and receive data)

OFDM（正交频分复用）系统以其抗多径衰落和较高的频带利用率，得到了众多领域的广泛应用。本文就OFDM系统中关键技术之一的信道估计技术进行了介绍。并分别叙述了OFDM系统和信道估计的意义，归纳了信道估计的分类，最后介绍了MMSE、LS及其改进信道估计算法并仿真出结果。(OFDM（orthogonal frequency division multiplexing) has been widely used in many areas for its good resistance to multipath fading and high bandwidth efficiency.In this paper,channel estimation,which is one of the key technologies in OFDM systems,were introduced. Then we discuss the significance of the channel estimation and the classification of channel estimation.Finally,we study the algorithms of channel estimation such as MMSE,LS and LMMSE,and further get the simulation results. )

说明：  LFM线性调频波的matlab实现方法，并附上几种常用算法。(The Matlab implementation method of LFM chirp is accompanied by several commonly used algorithms.)

说明：  利用叠加法pm谱，生成三维海浪波形的源程序，输入风级数，频率数和角度数得到该风级下的海浪波形；(Using the superposition method PM spectrum, the source program of three-dimensional wave waveform is generated, and the wave waveform under the wind level is obtained by inputting the number of wind level, frequency and angle;)

改进papr，对于改进papr的程序给了完整的代码，具有参考价值(Improved papr, for improving the procedures papr)

模拟空间多孔介质,用matlab三维曲面重构。(The porous media in the space is simulated, and the three-dimensional surface is reconstructed.)