TDMA, FDMA, and CDMA
TDMA, FDMA, and CDMA
TDMA, FDMA, and CDMA
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s<br />
s<br />
<strong>TDMA</strong>: a case study<br />
( t kT c T mT )<br />
() j () () j<br />
() j<br />
<strong>TDMA</strong><br />
() j () () j<br />
t = a (<br />
t kT mT )<br />
C<br />
t<br />
=<br />
N<br />
N<br />
m<br />
=<br />
k<br />
bps<br />
m<br />
k=<br />
1<br />
bps<br />
1<br />
a<br />
k+<br />
mN<br />
k+<br />
mN<br />
bps<br />
bps<br />
<br />
c m (j) : <strong>TDMA</strong> code assigned to<br />
user j for the m-th frame<br />
C<br />
C<br />
1<br />
0.8<br />
0.6<br />
0.4<br />
0.2<br />
0<br />
-0.2<br />
-0.4<br />
-0.6<br />
-0.8<br />
-1<br />
m<br />
F<br />
S<br />
F<br />
0 1 2 3 4 5 6 7 8 9 10<br />
x 10 -3<br />
12