hold off
subplot(2,2,1)
semilogy(known(:,2),known(:,5),'k-')
hold on
semilogy(known(:,2),known(:,4),'k--')
semilogy(known(:,2),regular(:,4),'k-.')
xlabel 'SNR (dB)'
ylabel 'BER'
title 'BER vs. SNR'
hold off

% a = axis;

x = 0.5; % 11; % a(1) + (a(2)-a(1))/20;
y = 0.3e-1; % 1.2e-1; % a(3) + (a(4)-a(3))/20;

text(x,y, ['-.-.-. GM bad init      '; ...
           '---- GM good init       '; ...
           '\_\_\_\_\_ known channel']);
