This paper investigates the completion of continuous spectrum occupancy in space-
frequency domain. Most of the existing studies adopt the traditional scheme, namely field …

In this paper, the problem of spectrum status determination is considered for large cognitive
radio (CR) ad hoc networks. Spectrum sensing and spectrum decision are critical for …

Spectrum data, which are usually characterized by many dimensions, such as location,
frequency, time, and signal strength, present formidable challenges in terms of acquisition …

A hybrid spectrum sensing and geolocation database framework is proposed to tackle the
discovery of spatial-temporal spectrum hole in cognitive radio networks. We first analyze the …

Electromagnetic spectrum is an indispensable resource in the current Information Age.
Along with the rapid development of integrated space and terrestrial communication …

Spectrum prediction is a key enabler of a range of emerging applications, from adaptive
spectrum sensing to agile and proactive decision making, for dynamic spectrum access. Due …

Cognitive Radio (CR) uses the principle of dynamic spectrum allocation to improve the
utilization of spectrum bands. The estimation of missing data is essential for maintaining an …

A primary user (PU) is the licensed owner of the spectrum allocated to it. Studies have
shown that, for most of the time, spectrum allotted to the PU is unused. This creates an …

Spectrum data, which is usually characterized by many dimensions, such as location,
frequency, time and signal strength, presents formidable challenges in terms of acquisition …

Spectrum occupancy reconstruction is an important issue often encountered in collaborative
spectrum sensing in distributed cognitive radio networks (CRNs). This issue arises when the …