With the development of wireless communication systems, it is particularly essential to
maximize the quality of experience (QoE) of machine-to-machine (M2M) communication. In …

This paper investigates the resource allocation problem for a multiuser underlay cognitive
system where the secondary system is allowed to transmit and cooperate with the primary …

Reducing interference to primary users and achieving good throughput are key objectives
for secondary users in a cognitive radio (CR) network. In this letter, a rate loss constraint is …

In this paper we study the resource allocation problem for the multiuser orthogonal
frequency division multiplexing (OFDM)‐based cognitive radio (CR) systems with …

In this paper we have studied the subcarrier and optimal power allocation strategy for OFDM-
based cognitive radio (CR) networks. Firstly, in order to protect the primary user …

In this paper, we consider a two-hop relay-assisted cognitive downlink Orthogonal frequency-
division multiple access (OFDMA) system (named as secondary system) dynamically …

In this study, a secondary network is underlaid in a conventional downlink orthogonal
frequency division multiple access (OFDMA) system to formulate a new implementation of …

To significantly promote Internet of Things (IoT) development, 5G network is enabled for
supporting IoT communications without the limitation of distance and location. This paper …

In this paper, we propose a clustering-based resource allocation (RA) scheme for the
multiuser orthogonal frequency division multiplexing (OFDM)-based cognitive radio network …

This paper investigates the performance of an orthogonal frequency-division multiplexing
(OFDM)-based cognitive radio (CR) spectrum sharing communication system that assumes …