lfm

说明：  EM-based Joint Data Detection and Channel Estimation for Uplink

用于四阶龙格库塔数值积分，做matlab仿真实验时会用到。(For the fourth-order Runge-Kutta numerical integration, doing matlab simulation experiments will be used. )

优化相关的最大值与最小值极大值极小值问题(Optimization-related maximum and minimum maximum minimum problem)

1 瑞利分布实现程序 2 瑞利分布＋杂波 3 相关对数正态分布杂波 4 相关weibull分布杂波 5 相干相关K分布杂波 (1 Rayleigh distribution to achieve program 2 Rayleigh distribution+ Clutter 3 Related lognormal clutter 4 related weibull distribution clutter 5 coherent K distributed clutter)

说明：  有关于系统呼损率丢包率随新呼叫接入门限的变化规律，用于判定新呼叫的介入指标(Call loss rate on the system packet loss rate with the new call admission threshold variation, used to determine the involvement of the new call indicator)

CLPF 理想低通滤波ICHPF 理想高通滤波 的实现用于图像的处理(CLPF ideal low-pass filter ICHPF ideal realization of high-pass filtering for image processing)

由于卫星与用户接收机二者的连线方向上存在相对运动，因此引起了载波和伪码的多普勒效应，再加上接收机晶体震荡频率漂移和卫星时钟频漂等原因。接收机实际接收到的卫星载波中心频率一般不再等于信号被发射时的标称频率，这就需要接收机在载波频率一维对信号进行搜索。同时，由于卫星到接收机的距离时刻变化，加上接收机始终相对于GPS时间的偏差又并不固定，因而接收信号的伪码相位值也在改变，所以接收机也要在码相位一维对信号进行搜索。扩频信号的捕获是一个对目标信号频率域和相位域进行的二维搜索过程。(Because of the relative motion between the two of the satellite and the user receiver, the Doppler effect of the carrier and pseudo-code is caused, and the frequency drift of the oscillation of the receiver crystal and the frequency drift of the satellite clock are added. The frequency of the satellite carrier center that the receiver actually receives is generally no longer equal to the nominal frequency of the signal being transmitted, which requires the receiver to search the signal in one dimension of the carrier frequency. At the same time, because the distance between the satellite to the receiver is changed, the deviation of the receiver always relative to the GPS time is not fixed, so the pseudo code phase value of the received signal is also changing, so the receiver also searches for the signal in the code phase. The acquisition of spread spectrum signal is a two-dimensional search process for the frequency domain and phase domain of the target signal)

用MATLAB~"gXLMATLAB语言编制的优化工具箱进行优化设计具有语言简单、函数丰富、用法比较灵活、 缟程效率高等特点。本文简要阐述了遗传算法的基本原理，并对英国Shefield大学的MATLAB遗传算法工具箱作了简要 的介绍。探讨了其在军事目标分配中的应用。(Using MATLAB ~ )

说明：  该程序仿真超宽带的脉冲位置调制。是在MATLAB下实现的。(ultra-wideband pulse position modulation. MATLAB is achievable.)

SEMINAR FILE FROM IEEE TRANSATION IN COMPUTER SCIENCE AND INFORMATION TECHNOLOGY