homography

在信号处理中，信号发射时，信号通过载波，调制，以电磁波的形式发射出来 在接收端，射频信号通过天线接收，超外差式等方式进行处理，变频到中频 然后通过数字技术对中频信号进行处理，此时的中频信号采样率很高，多达几十兆赫 而要解调出来的信号很小，此时就要经过滤波来得到我们需要的信号 如果直接设计滤波器，阶数会非常庞大，软件，硬件设备都承受不了 因此，一般常用的技术是进行下变频处理，其主要技术就是通过抽取滤波进行下变频 常用的滤波器就是CIC抽取, 希望可以帮助一些坛友解决基本的问题。 (In signal processing, signal emission, signal through the carrier, in the form of electromagnetic wave modulation, launched In the receiver, rf signals through the antenna, specialized superheterodyne type means such as processing, the frequency conversion to intermediate frequency Then through digital technology of intermediate frequency signal processing, at this time of intermediate frequency signal sampling rate is very high, as many as several decades MHZ But the signal demodulation out is very small, at this time would be passing filter to get what we need signal If design directly filter, order number be colossal, software, hardware equipment all suffer Therefore, the technology is usually used for down-transducer processing, its main technical is by extracting filtering down-transducer Commonly used filter is CIC extraction, the hope can help some friends solve basic problems of the altar.)

MIMO OFDM based codings for their resource allocation.

cleaks fadeing model

实现对自适应波束形成SIM算法的仿真，在该程序中，我们先设置入射的信号，再进行互协方差矩阵和自协方差矩阵的求解来实现该算法(To achieve adaptive beamforming algorithm for the simulation of SIM, in the process, we first set up the incident signal and then cross-covariance matrix and covariance matrix from the solution to the realization of the algorithm)

说明：  经典无网格教程的随书算法的例程，属于第4章例程(Classical meshless algorithm tutorial routines with books belonging to Chapter 4 routines)

对雷达系统中的常用LFM线性调频（chirp）信号及其匹配滤波器的设计进行MATLAB仿真(right of the radar system used LFM LFM (chirp) signals and matched filter into the design OK MATLAB)

匹配滤波程序 可以得出目标的位置速度等信息(match filtering)

dc motor of simulink and pid controller

有各种小波包分解的程序和子程序，能够有效快速地对振动信号进行分解。(There are various wavelet packet decomposition programs and subroutines, which can decompose vibration signals effectively and quickly.)

mimo ofdm matlab file