Date post: | 24-Oct-2014 |
Category: |
Documents |
Upload: | syamfi-koyekisme |
View: | 35 times |
Download: | 7 times |
Simulation of using QAM Modulation at Broadband Wireless
Access 3,3 GHz with SUI Channel Model
Aulia Fil Ardhyana7209030053
BackgroundBWA 3,3 GHz
Data Rate
Using of QAM
ModulationSNR based
on the value Pathlo
sss
Probabilitas bit Error
PURPOSE
Using of QAM Modulation
Data Rate transmission at bwa 3,3 GHz with QAM Modulation
BTS to ss
METHODOLOGYDemografi URBAN
Calculate pathloss(dB)
Calculate RSSI
Calculat SNR
Perhitungan nilai Probabilitas Error
Perhitungan nilai Data Rate
PATHLOSSPathloss is the difference in power between the
power transmitted to the power of the received.
shows that the signal level heve attenuation.
pathloss in here using SUI channel modeling.
Graph of pathloss
0 1 2 3 4 5 6 7 850
60
70
80
90
100
110
120
130
140
150
Distance between Tx and Rx (km)
Pat
h lo
ss (
dB)
10 m receiver antenna height in urban, sub urban, and rural environment
urban
sub-urban
Rural
RSSIThe RSSI is specified in the fixed wimax when
analyzing signal strength it is useful to relate the RSSI to the distance between the BS and SS.
The system has receive signal strength indicator (RSSI) which reports a value in dB.
Graph of RSSI
0 1 2 3 4 5 6 7 8-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
Distance between Tx and Rx 8(km)
nila
i RS
SI
(dB
)Nilai RSSI dengan jarak transmit dan receive 8 Km tinggi SS = 10 m
urban
sub-urban
Rural
SNRSNR is a better measure for the actual operating
conditions of the receiver than the RSSI value, since the SNR value takes into account interference and noise condition to signal strength.
GRAPH OF SNR
-90 -80 -70 -60 -50 -40 -30 -20 -10 0 1018
20
22
24
26
28
30
32
34
Nilai RSSI
nila
i SN
R (
dB)
Nilai SNR berdasarkan perubahan jarak, SS = 10 m
urban
sub-urban
Rural
-90 -80 -70 -60 -50 -40 -30 -20 -10 0 1018
20
22
24
26
28
30
32
34
Nilai RSSI
nila
i SN
R (
dB)
Nilai SNR berdasarkan perubahan jarak, SS = 3 m
urban
-80 -70 -60 -50 -40 -30 -20 -10 0 1028
29
30
31
32
33
34
Nilai RSSI
nila
i SN
R (
dB)
Nilai SNR berdasarkan perubahan jarak, SS = 3 m
sub-urban
-70 -60 -50 -40 -30 -20 -10 0 1032
32.2
32.4
32.6
32.8
33
33.2
33.4
33.6
33.8
34
Nilai RSSI
nila
i SN
R (
dB)
Nilai SNR berdasarkan perubahan jarak, SS = 3 m
Rural
Probability of Bit ErrorBER is the performance to support the M-
QAM modulation. At any rate modulation usedto know the value of error probability (Pb)
so any modulation rate can be determined andthe performance quality in signal transmission.
Graph of Probability
0 5 10 15 20 25 30 3510
-7
10-6
10-5
10-4
10-3
10-2
10-1
100
Nilai SNR
nila
i pro
babi
litas
err
or (
dB)
Probabilitas Error berdasarkan nilai SNR
64 qam
16 qam
Data Ratedata rate is the speed of the data
transmitted from the BTS to the SS. This data rate depends on the
modulation used and according to the state of the environment
The expected results
All of parameters as : pathlloss, RSSI, snr, the probability of bit error rateaims to determine the data in a transmission with QAM modulation
THANK YOU…