Generation of basic signals

I just need the code for generating the basic codes like unit step signal, unit impulse signal. unit ramp signal and the sine wave signal.

Answer 1

[Sulaymon Eshkabilov]

In MATLAB and Simulink, there are few built in functions to generate, such signals as unit step, impulse, unit ramp, sine wave or just using logical and matrix oprations - e.g.:

t = (-.1:.005:2*pi)';
S_step = heaviside(t);              % Step using heaviside()
plot(t, S_step, 'r-', 'LineWidth', 2.5, 'DisplayName', 'Unit Step')
legend show
title ('Generated signals')

S_impulse = 10*(t==0);             % 10 magnitude Impulse
S_unitstep = t>=0;                 % Alt. unit step
S_ramp = t.*S_unitstep;            % Unit Ramp 
S_sine = sin(t);                   % Sine wave
plot(t, S_impulse, 'k-', 'LineWidth', 2, 'DisplayName', '10 Mag Impulse'), 
legend show

plot(t, S_unitstep, 'g--', 'DisplayName', 'Unit Step'), legend show

plot(t, S_ramp, 'm--', 'DisplayName', 'Ramp')
legend show

plot(t, S_sine, 'b--','LineWidth', 1.5, 'displayname', 'Sine')
legend show
grid on
xlim([min(t) max(t)])
ylim([-1.1 1.1])

Answer 2

[ileyms]

% Define a range of t t = -1:0.01:3;

% Initialize x(t) as an array of zeros with the same length as t xt = zeros(size(t));

% Define x(t) for different ranges of t using conditional statements for i = 1:length(t) if t(i) < 0 xt(i) = 0; elseif t(i) >= 0 && t(i) < 2 xt(i) = 1; else xt(i) = 2; end end

% Plot x(t) figure; plot(t, xt); xlabel('t'); ylabel('x(t)'); title('Piecewise Function'); grid on;