Normal Random Variable - Random Signals and Processes Primer with MATLAB - page 252

a

2 =4 2 =9

m=1, σ m=1, σ

30 30

20
10

20
10

0
-10

0
-10

-20 -20

2000 4000 6000 8000 10000 2000 4000 6000 8000 10000

n n

2 =16 2 =36

m=1, σ m=1, σ

30
20
10

30
20
10

0
-10

0
-10

-20 -20

2000 4000 6000 8000 10000 2000 4000 6000 8000 10000

n n

b m=1, σ

2 =4

m=1, σ

2 =9

0.25

0.25

0.2 0.2

0.15 0.15

0.1

0.1

0.05 0.05

0

0

−20 −10 0 10 20 −20 −10 0 10 20

cells cells

2 =16 2 =36

m=1, σ m=1, σ

0.25 0.25

0.2 0.2

0.15 0.15

0.1 0.1

0.05 0.05

0 0

−20 −10 0 10 20 −20 −10 0 10 20

cells cells

Fig. 4.14 Normal random variables with s 2 ¼ 4, 9, 16, and 36 and m ¼ 1. ( a ) Normal variables.

( b ) Estimated PDFs