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stft1
在采样频率为1Hz，数据长度为1000点和信噪比为10dB的条件下，进行PPS信号的DPT迭代检测(the sampling frequency of 1Hz, data length of 1,000 points and 10dB signal-to-noise ratio for the conditions, PPS signal for the detection of DPT iterative)
- 2007-06-08 22:24:14下载
- 积分：1
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11
说明： empirical formula with kaiser
clc
clear all
fs=1000
fc=250
df=50
r=0.001
f=fc/fs
dw=2*pi*(df/fs)
a=-20*log(r)
n=floor(((a-8)/(2.285*dw))+1)
if a>50
b=0.1102*(a-8.7)
elseif a>=21 && a<=50
b=0.5842*((a-21)^0.4)+0.07886*(a-21)
elseif a<21
b=0.0
end
w=kaiser(n,b)
for i=1:n
if i~=(n-1)/2
hd(i)= (2*f*sin((i-((n-1)/2))*2*pi*f))/((i-((n-1)/2))*2*pi*f)
elseif i==(n-1)/2
hd(i)=2*f
end
end
for j=1:n
h(j)=w(j)*hd(j)
end
subplot(3,1,1), plot(w)
subplot(3,1,2), plot(h)
subplot(3,1,3), plot(h,n)
- 2014-12-24 23:20:03下载
- 积分：1
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3D-SPIHT
code Matlab this is frome my data base
- 2010-05-13 05:54:04下载
- 积分：1
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samira
some usefull matlab code to practice matlab
- 2011-06-13 15:57:48下载
- 积分：1
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rcosflt_Jamming
1、根据干扰总功率要求，在PSK调制信号带宽内产生单音干扰和多音干扰信号，并叠加到产生的信号源上。
2、将收到干扰的信号进行频率搬移到基带，然后通过匹配滤波器以及解调过程得到信息，统计误码率并与真实信息的解调误码率进行对比，评估音频干扰对PSK信号的干扰效果。
(1, according to the total power requirement of interference generated tone signal interference and multi-tone interference in the PSK modulated signal bandwidth, and superimposed on the signal generated by the source. 2, the received interference signal to a baseband frequency shift, and the information obtained by the matched filter and a demodulation process, statistical error rate BER and the true information demodulation comparison, evaluation of the PSK signal, audio interference interference effects.)
- 2014-05-03 13:20:55下载
- 积分：1
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rgb_hsi
rgb filter for processing images
- 2010-12-31 22:47:21下载
- 积分：1
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music32
32阵元的MUSIC算法，基于特征空间分解，内有详细说明，供大家参考。(32 Element MUSIC algorithm, based on the decomposition of space, which is described in detail, for your reference.)
- 2007-06-05 01:29:15下载
- 积分：1
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matlab-GUI-Calculator
用matlab GUI做的计算器，具有加减乘除功能(Calculator design by matlab GUI )
- 2011-06-03 17:02:19下载
- 积分：1
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4FSK
水下通信环境下，4FSK调制解调代码及bin文件,(4FSK modem code and the bin file)
- 2020-11-19 10:29:38下载
- 积分：1
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continousuniformr
continous uniform random variable
- 2009-11-07 00:54:33下载
- 积分：1
