11/24/2002
Noise: An Introduction
13
Averages (3)
•
E[v
n
] is also known as the “First Moment” of p(v
n
)
–
–
•
We can also calculate other important moments of p(v
n
).
The “Second Central Moment” or “Variance” (
s
2
) is:
Which for our sinusoidal noise is: