Future Work

The experiments presented in this thesis were carried out in laboratory and therefore one potential topic for future work is extension of experiments to outdoors. Furthermore, another topic for continuation would be to expand perspective of the jamming strategies elsewhere than those used in the experiments. Tune, barrage, and adaptive jammer are considered in the experiments but, for example, the effects of follower jammer could be better explored especially in the case of radio-controlled system. Here, very narrowband jamming signal jumps from one subband to another according to a pre-known frequency hopping pattern.

If the frequency hopping pattern used in the radio-controlled system is known, carrier frequency of the narrowband jammer can be effectively varied according to this pattern. This is essential as usage of the follower jammer would reduce power consumption compared to the jamming strategies explained in the experiments. Additionally, future experiments could be extended to include other applications also such as drones.

It should be mentioned that Industrial, Scientific and Medical band used in experiments belongs to ultra high frequency. However, often on the military side also high frequencies and very high frequencies are in use, e.g., Link 22 uses ultra high frequencies and high frequencies, and it is the most modern tactical data link system. This means that research could be extended to concern lower frequencies.

Besides, signal quality calculations could also be better applied to the radio-controlled system which was used to activate explosives in the experiments. For proper calculations, an activation signal of the explosive should be known beforehand. This means that the frame transmitted by the transmitter needs first to be decoded after which corresponding Gaussian frequency shift keying signal can be re-generated. By utilizing this Gaussian frequency shift keying signal and the received signal by an inband full-duplex transceiver, channel can be estimated and, hence better signal qualities calculated.

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