 
| PN Sequences
By Dr. Ernest Simo
3.0 Some Useful PN Codes Properties
Time-shifted PN Sequences
Consider two consecutive cycles of the PN Sequence
Ci(t).
-
Ci(t) = 1 0 0 1 1 1 0 1 0 0 1 1 1 0
Now, let us shift, (to the left side), Ci(t) and observe the various shifted sequences as a
function of the shift or delay parameter (t). The incremental
time-shift is the duration of one chip.
TIME-SHIFTS
 0
1
2
3
4
5
6
7
|
TIME-SHIFTS
1 0 0 1
1 1 0
1
0 0 1 1
1 0 1
1
0 1 1 1
0 1 0
1
1 1 1 0
1 0 0
1
1 1 0 1
0 0 1
1
1 0 1 0
0 1 1
1
0 1 0 0
1 1 1
1
1 0 0 1
1 1 0
1
|
Once again, the sequence repeats itself after L shifts.
(Here L=7).
CODE: AN INTRODUCTION
By Dr. Ernest Simo
© 1999 DR. ERNEST SIMO - SPACE2000 |
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