8.m

维特比编解码

	msg_dec = vitdec(msg_demod_bi, trel, tblen, 'cont', 'hard');
	stem([0:numPlot-1], msg_orig(1:numPlot),'rx'); hold on;  
	stem([0:numPlot-1], msg_dec(1+tblen:numPlot+tblen),'bo'); hold off; 
	axis([ 0 numPlot -0.2 1.2]);  xlabel('Time'); ylabel('Amplitude');
    title('Decoded Symbols' );