For conventional wireless networks, the main target of resource allocation (RA) is to
efficiently utilize the available resources. Generally, there are no changes in the available …

Cognitive radio (CR) has been considered as a potential candidate for addressing the
spectrum scarcity problem of future wireless networks. Since its conception, several …

This paper provides an overview of cognitive radio (CR) networks, with focus on the recent
advances in resource allocation techniques and the CR networks architectural design. The …

Radio maps provide metrics such as power spectral density for every location in a
geographic area and find numerous applications such as UAV communications, interference …

Traditional spectrum allocation policies may result in temporarily unused radio spectrum.
Cognitive radio (CR) has emerged as a promising technology to exploit the radio spectrum …

This paper proposes a probabilistic interference constraint method with a radio environment
map (REM) for spatial spectrum sharing. The REM stores the spatial distribution of the …

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 …

Herein, the spectral coexistence scenario of two multibeam satellites over a common
coverage area is studied where a primary satellite produces larger beams while a …

A resource allocation task for the uplink of OFDMA-based cognitive radio (CR) systems is
considered. The weighted sum-rate is maximized over subcarrier assignment as well as …

Through spatial multiplexing and diversity, multi-input multi-output (MIMO) cognitive radio
(CR) networks can markedly increase transmission rates and reliability, while controlling the …