Turbo_encode_decode

To understand the transmission scheme for QPSK modulation. To design a simple transceiver structure operating in a noisy channel.

一种新的压缩传感技术,用matlab进行的仿真(A new compressed sensing technology, using matlab simulation carried out)

本软件使用matlab预言编写，用于分析光子晶体光纤空气孔直径，孔间距，等参数对光子晶体光纤单模特性的影响。(Matlab predicted the use of this software to prepare for the analysis of photonic crystal fiber air hole diameter, hole spacing, and other parameters on the photonic crystal fiber single-mode characteristics.)

关于泄漏同轴电缆性质，参数的仿真，基于matlab。包括表面波、单模、多模辐射，辐射角，辐射方向图等等。上传者原创程序，专业型很强，非常稀少。(Leakage coaxial cable on the nature of the simulation parameters, based on matlab. Including surface wave, single-mode, multi-mode radiation, the radiation angle, radiation pattern and so on. From original procedure, highly professional, very scarce.)

说明：  设备巡检操作系统 本程序是专门为某电厂开发的设备巡检系统，无需更改，便可以直接应用到实际中。 1、本程序可免费使用及修改。 2、本程序使用第三控件fastReport,Vclskin2.68,MsComm等组件(控件)。 有关使用问题请和本人联系。qq：3691202 (equipment Inspection procedures of the operating system specifically for the development of a power plant equipment inspection system without changes, it can be applied directly to the practice. One, the procedure is free to use and modification. 2, the procedures use the third component fastReport, Vclskin2.68, MsComm other components (controls). The use of links and I requested. Qq : 3691202)

说明：  提供块和Python类以构建OFDM发送器和接收器 用于研究和教学目的，可动态配置的传输 参数。 包括基于Python Qt的可视化GUI。(Provides blocks and Python classes to build an OFDM transmitter and receiver for research and teaching purposes with dynamically configurable transmission parameters. Includes Python Qt based GUI for visualization.)

本试验是用数字基带处理方法来实现调试期算法的基带硬件实验。 通过用软件matlab进行了GMSK相位路径和眼图的仿真,之后对任何一种五位随机码，每周期八次的任一抽样时刻，和任一相位区域(0、1、2、3)的任一组合，计算出相位 ，并对 以及 进行1024位的量化、编码成10位二进制码表。进一步利用matlab从上述的码表得出GMSK基带波形的眼图，和理论上计算的眼图比较，一致性很好。(眼图主程序) (This test is a method to realize the digital baseband processor debugging phase algorithms with hardware-based experiments. By using the software matlab a GMSK phase path and the eye diagram of the simulation, after any one of five random code, eight times per cycle of any one sampling time, and any one-phase region (0,1,2,3) of any combination of one to calculate the phase, and 1024 as well as quantitative, encoded into a binary code table 10. Further use of matlab code from the above tables GMSK baseband waveform eye diagram and eye diagram theoretically compared to a good consistency. (Eye diagram of main program))

前后向平滑算法：算法的原理很简单，以五点三次平滑为例。取相邻的5个数据点，可以拟合出一条3次曲线来，然后用3次曲线上相应的位置的数据值作为滤波后结果。简单的说就是 Savitzky-Golay 滤波器 。只不过Savitzky-Golay 滤波器并不特殊考虑边界的几个数据点，而这个算法还特意把边上的几个点的数据拟合结果给推导了出来。(Before and after the smoothing algorithm: the principle of the algorithm is very simple, to 5.3 times smooth as an example. Take the adjacent five data points, you can fit out a curve 3 times, and then use the corresponding position on the third time the data value as the filtered results. Simply said is the Savitzky-Golay filter. However, the Savitzky-Golay filter does not specifically consider several data points of the boundary, and this algorithm also specifically to the edge of a few points of the data fitting results derived.)

求阵列天线方向图，矩形栅格点平面阵方向图。(Array antenna pattern)

DVB-T simulink simulation