Take a look at Slide 4: https://ocw.mit.edu/courses/6-02-introduction-to-eecs-ii-digital-communication-systems-fall-2012/f398fa4a366439301b3d17e45e028952_MIT6_0

Take a look at Slide 4: https://ocw.mit.edu/courses/6-02-introduction-to-eecs-ii-digital-communication-systems-fall-2012/f398fa4a366439301b3d17e45e028952_MIT6_02F12_lec07.pdf https://ocw.mit.edu/courses/6-02-introduction-to-eecs-ii-dig...