The Window Design Method The basic idea behind the design of linear-phase FIR filters using the window method is to choose a proper ideal frequency-selective filter [which always has a noncausal, infinite duration impulse response] and then truncate its impulse response hd[n] to obtain a linear-phase and causal FIR filter h[n]. To truncate the impulse response of the ideal filter a time window w[n] is used. Available windows in Matlab are rectangular [or boxcar in Matlab], bartlett, hamming, hanning
标签: linear-phase The the filters
上传时间: 2017-03-20
上传用户:PresidentHuang
it is a OFDM and QAM with dynamically X-QAM mdoulation scheme.
标签: dynamically mdoulation scheme X-QAM
上传时间: 2017-03-22
上传用户:GHF
Fast Fourier Transform power point The rectangular window introduces broadening of any frequency components [`smearing鈥? and sidelobesthat may overlap with other frequency components [`leakage鈥?. 鈥he effect improves as Nincreases 鈥owever, the rectangle window has poor properties and better choices of wncan lead to better spectral properties [less leakage, in particular] 鈥搃.e. instead of just truncating the summation, we can pre-multiply by a suitable window function wnthat has better frequency domain properties. 鈥ore on window design in the filter design section of the course
标签: rectangular introduces broadening Transform
上传时间: 2017-03-25
上传用户:change0329
在一个单位内部或通过广域协议(如X.25)互联的行业内部都有几十或上万台计算机互联,用Intranet虽然可以建立聊天室,但实现点对点实时对话却比较困难。本人用Winsock和VB自制了一套聊天室和对话系统,特拿来供同行们参考。
上传时间: 2017-03-25
上传用户:sy_jiadeyi
利用经典的COOLEY-TUKEY基2算法求复序列x[n]的DFTX[k].有Fortran的子程序和主程序,还有C程序
标签: COOLEY-TUKEY Fortran DFTX 程序
上传时间: 2017-03-26
上传用户:xwd2010
Mac OS X 下的网卡驱动,快下载啦
上传时间: 2017-03-26
上传用户:liglechongchong
通过插补计算实现在51单片机上控制X-Y机械手臂绘图的功能
上传时间: 2017-03-28
上传用户:小草123
1. 在No.1图形窗口中绘制 y=sin(x)在[0,2*pi]内的曲线。要求曲线的颜色为绿色,线型为 点划线,用*标示坐标点,在x轴的附近用 黑体 标注 ‘x轴’字样,在图形的上方加上标题 ‘正弦函数’,严格控制x,y轴分度相等,并开启网格。 2. 在No.2图形窗口中创建四个子窗口,在第一、二子窗口中用不同的方法同时绘制 y=x^2,y=-x^2,y=x^2*sin(x) 在[0,2*pi]内的曲线,并要给出标注 在第三个子窗口中绘制 三维曲线 3. 把No.3图形窗口分成五个子窗口,分别用plot3 mesh meshc meshz surf 来绘制 z=x*exp(-x^2-y^2) 在 -5=<x,y<=5 内的空间曲面图形,说明他们的区别,其中要求在用surf绘制的窗口内加入位置为[1,0.5,2]的光源,加入颜色标尺,采用spring色系
上传时间: 2017-03-30
上传用户:84425894
步距电机控制代码。可以在X,Y,Z三个方向移动电机。
上传时间: 2017-03-30
上传用户:qlpqlq
2004_1217_RT2560_Linux_SoftAP_Drv.tar.gz RT2500AP Source fot Kernel 2.4.x
标签: Linux_SoftAP_Drv Kernel Source 2004
上传时间: 2017-04-03
上传用户:franktu