DataSpeed.rar_The Show

N = 16; % Generate a random bit stream bit_stream = round(rand(1,N)); % Enter the two Phase shifts - in Radians % Phase for 0 bit P1 = 0; % Phase for 1 bit P2 = pi; % Frequency of Modulating Signal f = 4; % Sampling rate - This will define the resoultion fs = 100; % Time for one bit t = 0: 1/fs:1; % This time variable is just for plot time = []; PSK_signal = []; Digital_signal = []; for ii = 1: 1: length(bit_stream) % The FSK Signal PSK_signal = [PSK_signal (bit_stream(ii)==0)*sin(2*pi*f*t + P1)+... (bit_stream(ii)==1)*sin(2*pi*f*t + P2)]; % The Original Digital Signal Digital_signal = [Digital_signal (bit_stream(ii)==0)*... zeros(1,length(t)) + (bit_stream(ii)==1)*ones(1,length(t))]; time = [time t]; t = t + 1; end % Plot the PSK Signal subplot(2,1,1); M =awgn(PSK_signal,20,'measured'); plot(time,PSK_signal,'LineWidth',2); xlabel('Time (bit period)'); ylabel('Amplitude'); title('PSK Signal with two Phase Shifts'); axis([0 time(end) -1.5 1.5]); grid on; % Plot the Original Digital Signal subplot(2,1,2); plot(time,Digital_signal,'r','LineWidth',2); xlabel('Time (bit period)'); ylabel('Amplitude'); title('Original Digital Signal'); axis([0 time(end) -0.5 1.5]); grid on;