RSA1_imp_jin

说明：  fh ieee paper Variable Bit Allocation for FH-CDMA Wireless Communication Systems

电力最常用的规约的学习资料，包括101,102,103,104，modbus，cdt，其中104还有测试程序，及解析工具；( The most commonly used power statute learning materials, including 101,102,103,104, modbus, cdt, where there are 104 test procedures, and analysis tool )

说明：  ：载波频率偏移是OFDM系统实现的关键问题之一。分析了OFDM 系统载频偏移估计的2 种算法，即利用循环前缀和训练序列方法。它们均为最大似然估计方法。分别讨论了它们的基本 思想、实现方法和仿真结果。可以看出基于循环前缀算法复杂度较小，精度不高，而基于训练序列 的算法有较高的估计精度，但降纸了系统传输效率。(Abstract：Carrier frequency ofset is one of the key problems in OFDM system．Two foundational methods 。cycling prefix—based and training sequence—based algorithms。to estimate OFDM carriers~equency ofset are analyzed．Then it discusses their basic thoughts。implementing methods and simulation resuits． Finally。merits and demerits of every algorithm are supposed．It concludes that the cycling prefix— based algorithm has less complexity and less precision。and that the training sequence—based algorithm has better estimation performance at the cost of transmission efficiency．)

matlab simulink component

频率估计，是一种比较简单的算法，很基础，有助于初学者应用(Frequency estimation, is a relatively simple algorithm, it is based applications to help beginners )

说明：  两个matlab的GUI实现UDP通讯，建议在两台电脑上测试。(The two matlab GUIs implement UDP communication. It is recommended to test on two computers.)

opnet与matlab联调的步骤，过程详细，使用方便(Steps of OPNET and MATLAB debugging, detailed process, easy to use)

2,1,7卷积码译码s-function(2,1,7 Convolutional Decoding s-function)

实现串口通信 可以收发数据 可以是数字也可以是ASCII(Serial communication)

画出13位巴克码的时域波形及其自相关函数(waveform and autocorrelation of 13 bit barker code)