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
msg = randint(4000,1,2,139); %产生随机数
t = poly2trellis(7,[171 133]); %定义trellis
code = convenc(msg,t); %卷积编码
ncode = awgn(code,6,'measured',244); %加噪声
qcode = quantiz(ncode,[0.001,.1,.3,.5,.
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matlab
n = 7; %码长
k = 4; %信息位长
A = [ 1 1 1;1 1 0;1 0 1;0 1 1 ];
G = [ eye(k) A ]; %生成矩阵
H = [ A' eye(n-k) ]; %校验矩阵
%编码
msg = [ 1 1 1 1 ]; %信息比特
code = mod(ms
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matlab
www.eeworm.com/read/18028/771091
matlab
function [output, state] = encode_bit(g, input, state)
[n,k] = size(g);
m = k-1;
for i=1:n
output(i) = g(i,1)*input;
for j = 2:k
output(i) = xor(output(i),g(i,j)*state(j-1));
end
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matlab
st1 = 27221; st2 = 4831; %定义随机数产生的状态
n = 7; k = 4; %汉明码的参数
msg = randint(k*500,1,2,st1); %信息序列
code = encode(msg,n,k,'hamming/binary'); %编码
%产生突发错误，使得相邻码字发生错误
errors = zeros(si
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matlab
snr=10;
N=input('number'); %数据长度
Es=3;
g=[1 0 1;0 0 1]; %卷积码编码器两路的冲激响应
x=round(rand(1,N)); %产生信源
for i=1:N/2; %串并变换
x1(i)=x(2*i-1);
x2(i)=x(2*i);
end;
z=cnvc(g,x1,x2); %进行(3,2,3)卷积码编码
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matlab
R = 2; %插值因子
hm = mfilt.cicinterp(R);
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
y_fi = filter(hm,
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matlab
function out = CICinterp(r,x);
Hm = mfilt.cicinterp(r); %使用默认的CIC阶数和差分时延，以及字长
x_real = real(x);
x_imag = imag(x);
out_real = filter(Hm,x_real); %实部和虚部分开滤波
out_imag = filter(Hm,x_imag);
outt
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matlab
function out = halfdec(n,fp,l,x)
b = firhalfband(n,fp,'dev'); %半带滤波器系数
hf = mfilt.firdecim(l,b); %利用半带滤波器设计一个多相抽取滤波器
x_real = real(x);
x_imag = imag(x);
out_real = filter(hf,x_real); %实部和虚部
www.eeworm.com/read/18028/771097
matlab
function out = halfinterp(n,fp,l,x)
b = firhalfband(n,fp,'dev');%firhalfband(n,fp); %半带滤波器系数
hf = mfilt.firinterp(l,b); %使用半带滤波器设计一个多相插值滤波器
x_real = real(x);
x_imag = imag(x);
out_real = fi