In this paper, we study resource allocation for a multicarrier-based cognitive radio (CR)
network. More specifically, we investigate the problem of secondary users' energy-efficiency …

This letter investigates the energy-efficient power allocation for orthogonal frequency
division multiplexing (OFDM) based cognitive radio networks (CRNs). The problem is to …

In this paper, we investigate the energy-efficient resource allocation in orthogonal frequency
division multiplexing (OFDM)-based cognitive radio (CR) networks, where we try to …

Because the energy consumption is growing rapidly, green radio, which lays emphasis on
the energy efficiency (EE) in wireless networks, is becoming increasingly important. As …

Traditional designs of cognitive radio (CR) focus on maximizing system throughput. In this
paper, we study the joint overlay and underlay power allocation problem for orthogonal …

Cognitive radio (CR) has been recognised as one of the promising technologies to provide
efficient utilisation of the limited wireless spectrum. The authors investigate the power …

Cognitive Radio (CR) systems have been proposed to increase the spectrum utilization by
opportunistically access the unused spectrum. Multicarrier communication systems are …

Efficient and reliable subcarrier power allocation in orthogonal frequency-division
multiplexing (OFDM)-based cognitive radio networks is a challenging problem. Traditional …

In this paper, the problem of resource allocation optimization is studied for a single-cell
multiuser cognitive radio network in the presence of primary user networks. The spectral …

An optimal power allocation (OPA) policy for orthogonal frequency division multiplexing
(OFDM)-based cognitive radio networks (CRNs) using underlay spectrum access model is …