代码搜索：Matlab;trainning
找到约 10,000 项符合「Matlab;trainning」的源代码
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matlab
fs = 22.05e3; % 原始采样频率:22.05 kHz.
n = 0:5119; % 5120个采样点
x = sin(2*pi*1e3/fs*n); %原始信号
b = firhalfband(16,0.0001,'dev');
impz(b);
h = mfilt.firdecim(2,b);
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matlab
function out = CICdec(decf, diffd, numsecs,x,iwl,owl,wlps)
Hd = mfilt.cicdecim(decf, diffd, numsecs,iwl,owl,wlps); %得到CIC抽取滤波器
Hd.FilterInternals ='SpecifyPrecision';
%改变滤波器中默认的字长数，长度为级数的两倍
Hd.Se
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matlab
iwl = 16; %CIC滤波器输入信号的字长
owl = 32; %CIC滤波器输出信号的字长
wlps = 32; %CIC滤波器每级滤波器中每个字的比特数
decf = 4; %CIC滤波器的抽取率
diffd = 1; %CIC滤波器中的差分时延
numsecs = 3; %CIC滤波器级数
l = 2; %半带滤波器抽取因子
n = 16;
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matlab
r = 2; % 抽取因子
hm = mfilt.cicdecim(r);
fs = 44.1e3; %原始的采样率 44.1kHz.
n = 0:10239; % 10240个采样点
x = sin(2*pi*1e3/fs*n); %原始信号
y_fi = filter(hm,x);
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matlab
l=2; %半带滤波器的插值因子
n = 16; %半带滤波器阶数
fp = 0.0001; %半带滤波器的通带归一化频率
r=4; %CIC滤波器的插值因子
interp1=r*l; %总的插值因子
hb1 = halfinterp(n,fp,l,x); %调用子函数halfinterp进行半带滤波器的插值
x1 = CICinterp(r
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matlab
clear;
load c;
Fs=38400; %WCDMA信号的采样率
nsamp=16; %过采样率
delay=3; %根号下升余弦的群时延
datain=c; %这里c为WCDMA系统的扰码数据
Num=length(datain); %计算相关的长度
dataout=RRCsend(datain,Fs,nsamp,delay); %调用子程序
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matlab
len=1000; %仿真数据长度
%QPSK信号源
I_Data=randint(N,1)*2-1;
Q_Data=randint(N,1)*2-1;
s=I_Data + j*Q_Data;
%载波信号
Freq_Sample=2400; %采样率
Delta_Freq=-60; %频偏
Time_Sample=1/Freq_Sample; %每个采样值的持续
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matlab
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matlab
len=100; %每帧的数据长度
n=3; %进行仿真的帧数
c=[1 1 1 -1 -1 1 -1]; %巴克码
for i=1:n
s(i,:)=randsrc(1,len); %产生每周的信源数据
end
r=[c s(1,:) c s(2,:) c s(3,:)]; %将巴克码插入信源数据中
thr=6; %判决门限，
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matlab
function dataout=RRCsend(datain,Fs,nsamp,delay);
num =rcosine(Fs,Fs*nsamp,'fir/sqrt',0.22,delay); %滤波器抽头系数
dataoutr=rcosflt(real(datain),Fs,Fs*nsamp,'filter',num);
dataouti=rcosflt(imag(datain),Fs