Spectrum Sensing and Access in Heterogeneous SHSNs

In this chapter, we investigate the spectrum sensing and access of a heterogeneous spectrum harvesting sensor network (HSHSN) which consists of EH-enabled spectrum sensors and battery-powered data sensors. The former detects the availability of licensed channels, while the latter transmits sensed data to the sink over the available channels. Two algorithms that operate in tandem are proposed to achieve the sustainability of spectrum sensors and conserve energy of data sensors, while the EH dynamics and PU protections are considered. Extensive simulation results are given to validate the effectiveness of the proposed algorithms.

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