c8_convcode.m

经典书籍《通信系统仿真原理与无线应用》chap8部分课后题仿真源代码

% File c8 convcode.m
zdB = 2:0.1:10;                           % set Eb/No axis in dB
z = 10.^(zdB/10);                          % convert to linear scale
puc = Q(sqrt(2*z));                        % uncoded BER
W = exp(-z/2);
Num = W.^5;
Den = 1-4*W+4*W.*W;
ps = 0.5*Num./Den;
semilogy(zdB,puc,'-.',zdB,ps)
grid
legend('uncoded','coded')
xlabel('E b/N o in dB')                     % label x axis
ylabel('Bit Error Probability')                % label y axis
% End of script file.