Some CDMA (Details)

1
Some CDMA (Details)
2
MODELLING of the SIGNAL ,b(t)
3
PN Pseudorandom Number ? an
4
(No Transcript)
5
In practice, not so random
6
Five Properties of Good PN-sequences
7
(No Transcript)
8
Properties 45
i.e. With self signal copies
9
Trade-off
10
PN sequence M-sequences
11
Period N
12
This next slide Just for reference
Irreducible polynomial
13
(No Transcript)
14
See next slide Ci
15
M-sequence Engineering design
dn-1
dn
Multipli-cation
16
(No Transcript)
17
(No Transcript)
18
Properties of 'm-sequences'
i.e. N / k gt Remainder 0
19
Properties of m-sequences
Thus no need to use 2-value format
20
Properties of m-sequences
21
(No Transcript)
22
Preferred m-sequences
23
(No Transcript)
24
Gold Sequences
25
(No Transcript)
26
(No Transcript)