User guide

Canopy
®
OFDM Backhaul Solutions
Backhaul Solutions for the Most Challenging Locations and Applications
Canopy 30/60 Mbps Backhaul Aggregate Ethernet Throughput Rate
The equipment capability of the 30/60 Mbps Backhaul Radio is given in Tables 1 and 2. These tables
provide the Ethernet throughput rate vs. link loss for the Canopy 30/60 Mbps Backhaul in both high
throughput and low latency modes. The link loss is the total attenuation of the wireless signal between the
two Point-to-Point radios. Adaptive modulation will ensure that the highest throughput that can be
achieved instantaneously will be obtained taking account of propagation and interference. When the link
has been installed, the Status Page on the management interface provides 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.
Aggregate Ethernet Throughput Rate (Mbps)
[1]
Hi = High Throughput Mode
Lo = Low Latency Mode
0-5km 0-40km 0-100km 0-200km
Hi Lo Hi Lo Hi Lo Hi Lo
5.7
GHz
Max
Path
Budget
(dB)
[2]
5.4
GHz
Max
Path
Budget
(dB)
[2]
64QAM⅞ 42.5 39.7 39.5 34.7 35.2 28.5 29.8 22 138.1 139.8
64QAM¾ 36.4 34 33.8 29.7 30.2 24.5 25.5 18.9 142.3 142.5
64QAM⅔ 32.4 30.2 30.1 26.4 26.8 21.8 22.7 16.8 144.4 144.3
16QAM¾ 24.3 22.7 22.6 19.8 20.1 16.3 17 12.6 150.4 150.9
16QAM½ 16.2 15.1 15 13.2 13.4 10.9 11.3 8.4 155.2 153.5
QPSK⅔ 10.8 10.1 10 8.81 8.93 7.25 7.56 5.6 160.7 160.3
QPSK½ 8.1 7.55 7.52 6.61 6.7 5.44 5.67 4.2 163 162.8
BPSK½ 3.6 3.36 3.34 2.94 2.98 2.42 2.52 1.87 168.5 168.6
Table 1: Canopy 60 Mbps Backhaul
Aggregate Ethernet Throughput Rate (Mbps)
[1]
Hi = High Throughput Mode
Lo = Low Latency Mode
0-5km 0-40km 0-100km 0-200km
Hi Lo Hi Lo Hi Lo Hi Lo
5.7
GHz
Max
Path
Budget
(dB)
[2]
5.4
GHz
Max
Path
Budget
(dB)
[2]
64QAM⅞ 21.3 19.8 19.7 17.3 17.6 14.3 14.9 11.0 138.1 139.8
64QAM¾ 18.2 17.0 16.9 14.9 15.1 12.2 12.8 9.4 142.3 142.5
64QAM⅔ 16.2 15.1 15.0 13.2 13.4 10.9 11.3 8.4 144.4 144.3
16QAM¾ 12.1 11.3 11.3 9.9 10.1 8.2 8.5 6.3 150.4 150.9
16QAM½ 8.1 7.6 7.5 6.6 6.7 5.4 5.7 4.2 155.2 153.5
QPSK⅔ 5.4 5.0 5.0 4.4 4.5 3.6 3.8 2.8 160.7 160.3
QPSK½ 4.1 3.8 3.8 3.3 3.4 2.7 2.8 2.1 163 162.8
BPSK½ 1.8 1.7 1.7 1.5 1.5 1.2 1.3 0.9 168.5 168.6
Table 2: Canopy 30 Mbps Backhaul
1
These data rates are reduced when AES or ARQ are enabled.
2
AMOD link margin of 1.5dB applied
Issue 4, March 2005 Page 13 of 30