Consequently, transmitter power levels can be low and the effective range of transmissions may be greater than would typically be the case for technologies which do not provide such selectivity.
Typical UNB systems operate with a bandwidth of a few 10s to a few 100s Hz[5] and are used for the transmission and reception of digital signals.
Some such applications can be found in the Internet of things,[7] with UNB being one of the technologies that have been used to implement Low-Power Wide Area Networks.
[8] Short, infrequent transmissions with low transmit power can enable long-life, battery-powered operation of UNB devices connected in a LPWAN.
[11] They may be deployed in a shared spectrum (ISM band) [12] Typical properties of UNB devices operating in the UHF spectrum below 1 GHz have been described by ETSI;[13] whilst specific UNB-based protocols for the implementation of LPWAN have also been standardised (alongside others) by ETSI.