威布尔

nRF905无线收发模块收发信号程序(The program of the nRF905 wireless transceiver module )

C++实现的学生健康管理系统，使用顺序表的数据结构进行的实现，欢迎交流和讨论(The student health management system realized by C++ is realized by using the data structure of sequence table. Welcome to exchange and discuss.)

说明：  可实现，线性调频信号的产生，波形显示，波形解调和码字解调功能(Realizable, chirp signal generation, waveform display, waveform demodulation and codeword demodulation)

说明：  生成m序列和gold序列的matlab代码，并比较他们的自相关、互相关特性。(Generate matlab code of m-sequence, and control the generation of m-sequence with specified requirements through input tap)

在xOy平面（H平面）中获得的具有不同数量的单元和相位的平面天线阵获得的辐射方向图(Radiation patterns obtained from planar antenna arrays with different number of elements and phases in the xOy plane (H plane))

根据流程图搭建并且仿真OFDM系统，画出输入输出的信号的星座图，计算误码率，改变抽头系数……(According to the flow chart, the OFDM system is built and simulated. The constellation diagram of the input and output signals is drawn, the bit error rate is calculated, and the tap coefficient is changed.)

本程序主要是有关循环平稳特性的 是关于QPSK信号降阶处理 并利用BPSK信号进行相关的参数估计问题的 有详细的循环平稳特性的程序 及不同的平方降阶方法(This procedure is mainly reduced order processing QPSK signal and BPSK signals related to the parameter estimation problem detailed cyclostationary features program and the square of reduced-order cyclostationary characteristics)

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．)

说明：  DDE CLIENT,用于dde方式读区服务器内容(DDE Client for dde reading of server content)

用于4G LTE下行链路PDSCH仿真(for simulation of LTE Downlink PDSCH)