c_a.rar_C/A_C/A码_C/A码 matlab_c_a_产生C/A码 matlab

k1 = 2;k2 = 6;delay = 5; reg = - ones(1,10); for j = 1 : 1023; mls(j) = reg(10); modulo = reg(2) * reg(3) * reg(6) * reg(8) * reg(9) * reg(10); reg(2:10) = reg(1 : 9); reg(1) = modulo; g2(j) = reg(k1) * reg(k2); end %g2 mls delay examine if mls == g2([delay:1023 1:delay-1]) disp('ok') else disp('not match') end % exchange the '-1' into 0 and '1'into '0' in the g2 ind1 = find(g2 == -1); ind2 = find(g2 == 1); g2(ind1) = ones (1,length(ind1)); g2(ind2) = zeros(1,length(ind2)); temp= g2(1:120); x(1) = 0;show(1) = temp(1); p = 2; for i = 2:length(temp) if((temp(i) == temp(i-1))) x(p) = i - 1; show(p) = temp(i - 1); x(p+1) = i-1+0.5; show(p + 1) = temp(i); p = p + 2; else show(p) = temp(i); x(p) = i; p = p + 1; end end plot(x,show) axis([0 (length(x)-60) -0.1 1.1]); grid;