Due to the under-utilization problem of the allocated radio spectrum, cognitive radio (CR)
communications have recently emerged as a reliable and effective solution. Among various …

The term'radio map'in general refers to the geographical signal power spectrum density,
formed by the superposition of concurrent wireless transmissions, as a function of location …

The spectrum cartography (SC) technique constructs multi-domain (eg, frequency, space,
and time) radio frequency (RF) maps from limited measurements, which can be viewed as …

Compressed sensing deals with the reconstruction of signals from sub-Nyquist samples by
exploiting the sparsity of their projections onto known subspaces. In contrast, this article is …

Power spectral density (PSD) maps providing the distribution of RF power across space and
frequency are constructed using power measurements collected by a network of low-cost …

Today's spectrum measurements are mainly performed by governmental agencies which
drive around using expensive specialized hardware. The idea of crowdsourcing spectrum …

Spectrum cartography (SC), also known as radio map estimation (RME), aims at crafting
multi-domain (eg, frequency and space) radio power propagation maps from limited sensor …

This comprehensive reference text discusses concepts of cognitive radio and the advances
in the field of spectrum sensing. This text discusses the concept of cognitive radio for next …

When acting as dynamic receivers, unmanned aerial vehicles (UAVs) have several
advantages over the conventional static base stations for received signal strength (RSS) …

Efficient estimation of wideband spectrum is of great importance for applications such as
cognitive radio. Recently, sub-Nyquist sampling schemes based on compressed sensing …