D: Reducing Wireless Interference
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Verint Video Intelligence Solutions
5. Reduce the transmission (tx) bit rate of the cell affected by interference. The lower the
tx bit rate, the better the resistance to interference.
Performing a Site Survey
To reduce radio interference possibilities between two adjacent cells, the difference in signal
level between the cells must not exceed a specific value that varies depending on the
transmission (tx) bit rate used in the wireless cell:
If the signal difference is higher than this maximum value, there will be too much
interference in the adjacent cells. To calculate this signal difference, perform a site survey.
A site survey scans all frequency channels, evaluate the interference level in each channel,
and allows you to choose the channel with the less interference.
The following operations relative to RF site surveys are available:
Specify the number of consecutive surveys to perform
Start and stop a site survey
Look at the last survey report
Reset the survey database
Tx Bit Rate
Maximum Signal Difference
with the Adjacent Channel
Maximum Signal Difference with
the Second Adjacent Channel
54 Mbps
4 dB
14 dB
48 Mbps
10 dB
20 dB
36 Mbps
13 dB
23 dB
24 Mbps
15 dB
25 dB
18 Mbps
21 dB
31 dB
12 Mbps
21 dB
31 dB
9 Mbps
22 dB
32 dB
6 Mbps
23 dB
33 dB
