Evaluate cross or auto correlation

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Reference no: EM134587

The waveform is one of sixteen possible signals plus noise. The signals are four bits long (0000, 0001, 0010, ... etc.). You have to figure out which one using cross or auto correlation. A 1 is shown by 1 volt, a 0 by -1 volt. The signal is 40 points long. Each bit is 10 points long. The 41st point starts a new sequence.

1450_Cross or auto correlation.png

Time

Voltage

0

4.53

1

0.57

2

6.16

3

0.68

4

-0.71

5

0.67

6

-0.52

7

3.7

8

-0.78

9

0.16

10

-0.32

11

-3.81

12

-2.35

13

-2.02

14

-0.21

15

-1.73

16

1.42

17

1.25

18

0.98

19

2.46

20

-1.11

21

-1.31

22

-3.8

23

-1.07

24

0.74

25

-3.69

26

1.63

27

1.91

28

-1.37

29

-1.79

30

1.87

31

-0.78

32

0.44

33

-0.38

34

1.49

35

-0.42

36

0.98

37

0.03

38

-4

39

2.01

40

0.65

Reference no: EM134587

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