协同通信的MATLAB仿真代码
协同通信的MATLAB仿真代码
g = [ 1 1 1; 1 0 1 ];
x1 = round(rand(1, 112)); % info. bits 信息比特
CRC_CCITT = CRC_16(x1);
x =[x1,CRC_CCITT] %加上CRC 比特信息
input = x;
output1 = rsc_encode(g,input,1)
t = poly2trellis(3,[7 5],7); % Define trellis.
code = convenc(x,t)% Encode the data.
err = sum(abs(code - output1(1:end-4)))
ncode = awgn(code,4,"measured"); % Add noise.
opmode = "trunc"; %操作模式
tblen1 = 5;
decode1= vitdec(-ncode, t, tblen1, opmode, "unquant");
err1 = sum(abs(decode1 - x))
qcode = quantiz(ncode,[0.001,.1,.3,.5,.7,.9,.999]);
add =zeros(1,96);
qcode = [qcode,add];
tblen = 48; delay = tblen; % Traceback length
decode2 = vitdec(qcode,t,tblen,"cont","soft",3); % Decode.
%[number,ratio] = biterr(decode2(delay+1:end),x(1:end-delay))
%err2 = sum(abs(decode2 - x))
[number,ratio] = biterr(decode2(delay+1:end),x(1:end))
err2 = sum(abs(decode2(delay+1:end) - x))
- 2022-08-08 06:54:23下载
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