Data rate calculations
Chapter 4 Reference information
phn-0896_012v000
4-116
Jul 2010
Example
Suppose that the link characteristics are:
•
Product variant = PTP 600 Lite
•
Link Symmetry = 1:1
•
Link Mode Optimization = TDM
•
Modulation Mode =
64QAM 0.92 Dual
•
Channel Bandwidth = 10 MHz
•
Link Range = 60 km
The calculation procedure for this example is described in
Procedure 4-2
.
Procedure 4-2 Example of data rate capacity calculation
1
Use
Table 4-89
to look up the data throughput capacity rates:
•
Tx = 41
.41
Mbits/s
•
Rx = 41
.41
Mbits/s
•
Both = 82.81 Mbits/s
2
Divide these rates by 2 to give PTP 600 Lite rates:
•
Tx = 20
.70
Mbits/s
•
Rx = 20
.70
Mbits/s
•
Both =
41.40
Mbits/s
3
Use
Figure 4-39
to look up the Throughput Factor for 1:1, TDM and
Link Range 60 km. The factor is 0.86.
4
Multiply the rates from Step 2 by the Throughput Factor from Step 3 to
give the throughput capacity of the link:
•
Tx = 17
.80
Mbits/s
•
Rx = 17
.80
Mbits/s
•
Both = 35
.60
Mbits/s
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