SATEL-TR489
Integration Guide, Version 0.9
36
9.4
Proposals for more reliable radio link
In case where the environment is challenging the following methods can be used for improving
the transmission reliability:
•
Forward Error Correction, FEC, is recommend to use in challenging environment like
urban areas.
•
Directional antennas.
•
Before building the radio link(s) it is highly recommend that the radio environment is
measured to find out whether the radio environment is clean enough by using a
spectrum analyzer or radio
module’s RSSI, Received Signal Strength Indication,
value.
•
Co-operation with the local authority to find out the optimum free radio channel.
•
If the channel is disturbed an external band-pass filter can be used for improving the
filtering.
•
If at the adjacent channel is TDMA, Time Domain Multiple Access, it is recommended
to use time slot for receiving which is not in synchronization with the TDMA radio
transmission.
•
In Europe it is not recommended to use channels which are located near by the TETRA
or television frequencies.
