Issue 1.1 April 2006
Page 35
6.1.4 Aggregate Ethernet throughput rate v maximum link loss
The equipment capability is given in Table 5. It gives the Ethernet throughput rate vs link loss
for Canopy 150/300 Mb BH in all modes. Adaptive modulation will ensure that the highest
throughput that can be achieved instantaneously will be obtained taking account of
propagation and interference. The calculation of
E
quation needs to be performed to judge
whether a particular link can be installed. When the link has been installed web pages provide
information about the link loss currently measured by the equipment both instantaneously and
averaged. The averaged value will require maximum seasonal fading to be added and then
the radio reliability of the link can be computed.
Modulation Mode
/ Payload Type
Maximum
Aggregate
Data Rate
(Mbit/s)
Threshold
Value
(dBm)
Output
Power
(dBm)
Maximum Link
Loss
(dB)
256QAM 0.81 dual
300.2
-59.1
+18
124.1
64QAM 0.92 dual
252.9
-62.0
+18
127.0
64QAM 0.75 dual
206.7
-68.1
+18
133.1
16QAM 0.87 dual
160.8
-71.0
+20
138.0
16QAM 0.63 dual
115.6
-75.2
+22
144.2
16QAM 0.63 single
57.8
-79.3
+22
148.3
QPSK 0.87 single
40.2
-81.6
+23
151.6
QPSK 0.63 single
28.9
-84.6
+24
155.6
BPSK 0.63 single
14.4
-88.1
+25
160.1
256QAM 0.81
150.1
-64.0
+18
129.0
64QAM 0.92 single
126.4
-65.9
+18
130.9
64QAM 0.75 single
103.3
-71.7
+18
136.7
16QAM 0.87 single
80.4
-74.8
+20
141.8
Table 5: 300 Mb BH - Aggregate Ethernet throughput rate v maximum link loss
Divide the above Aggregate Ethernet rates in half to compute 150 Mb BH rates.
The full calculation is relatively complicated and thus Motorola have supplied a link estimator
that calculates the radio propagation and reliability of NLoS links using the Canopy 150/300
Mbps Backhaul equipment.
A more detailed discussion on data rates can be found in Section 17.
3
Aggregate data rate in 40:40 mode for a 1km link length
Summary of Contents for Canopy 150 Mbps Backhaul
Page 1: ...Canopy 150 300 Mbps Backhaul User Guide BH150 300 UG en Issue 1 1 April 2006 ...
Page 25: ...Issue 1 1 April 2006 Page 24 Figure 5 Canopy 150 300 PIDU Power Input ...
Page 97: ...Issue 1 1 April 2006 Page 96 Figure 59 Spectrum Management Help Page ...
Page 162: ...Issue 1 1 April 2006 Page 161 Figure A8 Surge Arrestor ALPU ORT Connection Illustration ...