Create a binary signal

Hello, anyone have any ideia how can I make this signal in a plot? The time must be between -3 and 3 with a range of 1ms.

Thanks

Answer 1

[Adam Danz]

This solution uses the square() funciton which converts a sin wave into a square wave with normalized values between [-1:1]. All you have to do is create a sin wave that fits your description, convert it to square wave, and then vertically scale it.

% Set params
width = 1.0;        % Width of each step
height = 1.0;       % Height of step (max - min)
base = 0.0;         % min value
start = -3;         % starting x value
stop = 3;           % ending x value
res = 0.001;        % resolution
horzShift = .5;     % horizontally shift (negative = leftward)

% Compute square wave
x = start : res : stop; 
y = (square(sin((x+horzShift)/width*pi))+1)/2*height + base;

% figure
plot(x,y, 'k-', 'linewidth', 3)
ylim([base - 1, base+height+1])

[Rafael Rafael]

Oh thanks, that is an inteligent solution :)

[Adam Danz]

Glad it worked for you!

Answer 2

[chourouk]

comment cree un signal binaire entre recepteur et emetteur?