program

一个科技公司使用的GPRS接收程序。可是直接使用(A PROGRAM OF GPRS SERVER 。IT S VERY EASY TO USE.)

说明：  对接受到的调制信号的特征提取，用于调制识别(automatic modulation recognition)

In this paper, we present a Selected Mapping (SLM) PAPR reduction technique for MIMOOFDM system with special protection of Side Information (SI). Selected Mapping (SLM) is a powerful PAPR reduction technique since it does not cause any signal distortion and simple to implement. As a special protection for the Side Information (SI) of SLM technique, we propose a SI power allocation procedure. Simulation results show that our proposed technique gives significantly better BER performance than the ordinary SLM technique for MIMO-OFDM systems. Analysis for the optimum SI power allocation is also presented.

说明：  MathType需要与其他文档编辑工具搭配使用，并且能够与office系列软件完美兼容，可用在编辑数学试卷、书籍、报刊、论文、幻灯演示等方面，是编辑数学资料的得力工具，所以受到了广大用户的一致好评。并且office系列本就内置有MathType的缩减版，这让用户们更加易于上手。(MathType needs to be used with other document editing tools, and can be perfectly compatible with office series software. It can be used in editing math papers, books, newspapers, papers, slide shows, etc. it is a powerful tool for editing math materials, so it has been unanimously praised by the majority of users. And the office series has a reduced version of MathType built in, which makes it easier for users to get started.)

说明：  针对数字卫星常用的 7 种通信信号调制方式(QPSK、8PSK、16QAM、32QAM、64QAM、16APSK、32APSK)，对零中心归一化瞬时幅度谱密度最大值、四次方谱、幅度、高阶累积量四种特征参数进行了分析，提出了一种联合特征参数的信号调制识别方法．(Aiming at seven communication signal modulation modes commonly used in digital satellite (QPSK, 8PSK, 16QAM, 32QAM, 64QAM, 16APSK and 32APSK), four characteristic parameters of zero-center normalized instantaneous amplitude spectral density, quadratic spectrum, amplitude and high-order cumulant are analyzed, and a signal modulation recognition method of joint characteristic parameters is proposed. Method.)

CONVERT A MATRIX TO LOWER TRIANGULAR MATRIX

实现时域与频域均衡MMSE方法的比较 采用64QAM调制(Comparison of the time domain and frequency domain equalization MMSE method)

SLM算法降低OFDM通信系统中的PAPR，使用matlab进行仿真(SLM algorithm reduces PAPR in OFDM communication system, and matlab is used for simulation)

simulink搭建的卫星姿态动力学仿真，参考书籍是章仁为的卫星鬼道姿态动力学仿真，想学对卫星姿态有兴趣的同学强烈推荐，(simulink to build the satellite attitude dynamics simulation, reference books is Zhang Ren ghosts satellite attitude dynamics simulation, I wanted to learn for students interested in satellite attitude is strongly recommended,)

基于IRA天线的辐射波模拟器天线辐射性能研究(Radiation wave simulator antenna radiation performance of the antenna-based IRA)