Digital Signal Processing Reference
In-Depth Information
10
0
U = 30
U = 8
Analysis
10
−1
10
−2
10
−3
−2
0
2
4
6
8
10
12
14
SNR in dB
(a)
10
0
U = 30
U = 8
Analysis
10
−1
10
−2
10
−3
−4
−2
0
2
4
6
8
10
12
14
SNR in dB
(b)
FIgure 10.5
Analytical and simulated BER of MC-ISR versus SNR in dB for (a) MT-CDMA,
L
= 64,
N
c
= 3
, DBPSK, and (b) MC-DS-CDMA
L
= 32,
N
c
= 3
, DBPSK.
V
= 5 kmph) we report 1.85 and 2 dB gains in SNR for MT-CDMA and MC-DS-CDMA,
respectively. Note that the SNR gains are more important in high Doppler situations
(speed of
V
= 50 kmph). At a bit error rate of 5%, MC-ISR performs 5.5 and 3 dB better
than MC-MRC for MT-CDMA and MC-DS-CDMA, respectively.
In order to evaluate the specific impact of ICI on the link-level performance, we com-
pare the BER curves of MT-CDMA (
L
= 64,
N
c
= 3,
C
= 8) MC-ISR with and without full
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