Mioty superiority over both LoRa-versions in satellite-IoT applications

Low power wide area networks (LPWANs) represent a special case of the Internet of Things (IoT) technology, which aims at supporting massive access for remotely deployed IoT devices. The target application of such devices lies typically in the field of sensors with limited size and battery capacity as well as low data rate transmissions. Correspondingly, the transmit power of these sensors is very low while the distance between the transmitter and the (terrestrial) receiver can span tens of kilometres, which leads to a typically very low signal quality and critical link budget. Moreover, the large number of sensors transmitting their data packets at random times over the same radio resource poses a challenge with respect to co-channel interference. In order to cope with the aforementioned challenges of low signal quality and strong co-channel interference, multiple commercial products have been developed in the past for terrestrial applications. For terrestrial IoT applications two well-known systems areLoRaandmioty. In this work, we evaluate some comparisons between LoRa and mioty and apply the results to direct-to-satellite communications. LoRa has addressed some shortcomings of their waveform design with the updated variant LoRa FHSS. However, in some key aspects that also (but not exclusively) apply to satellite communications mioty still outperforms LoRa.