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PN Sequences
By Dr. Ernest Simo

6.0 Correlation Workshop
1 - Let code C2(t), generated by a 3-stage LSR, be: 1 1 0 1 0 0 1
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Comment on the code length and its Balance property
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Compute the various time-shifted version C2(t)
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Compute and plot the Auto-correlation function of C2(t)
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Draw some conclusions about PN Codes and their Auto-correlation
properties.
2 - Let C1(t) be: 0 1 1 1 0 0 1
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Compute the various time-shifted versions C2(t-
i) of C2(t)
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Compute and plot the Cross-Correlation function [C1(t)
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C2(t-
i)]
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Compare with Cross-Correlation C2(t)
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C1(t-
i)
3 - Generate your own maximum-length PN Code using
a 4-stage Linear Shift Register and repeat above exercises.
PN Sequences
By Dr. Ernest Simo
© 1999 DR. ERNEST SIMO - SPACE2000
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