To solve the contradiction between limited spectrum resources and increasing
communication demand, this paper proposes a wireless resource allocation scheme based …

In this paper, we study resource allocation problems for a two-tier cognitive heterogeneous
network in interweave spectrum sharing mode. Secondary users (SUs) in small cells (SCs) …

In a conventional cognitive radio (CR) network, only when the primary user's (PU) frequency
bands are sensed to be free, secondary users (SUs) can utilize these frequency band …

In this paper, we investigate improved spectrum concern by employing non-orthogonal
multiple access (NOMA) scheme in cognitive radio (CR) network to form CR-NOMA and to …

In this paper, we propose a novel robust resource allocation algorithm for downlink non-
orthogonal multiple access (NOMA) cognitive radio networks with the underlay spectrum …

Sixth generation (6G)-enabled Internet of Things (IoT) needs sufficient spectrum resources
to provide spectrum access for massive IoT's terminals. However, traditional orthogonal …

Aiming at the high-performance requirements of Internet of Things (IoT) scenarios, a
cognitive radio-inspired nonorthogonal multiple access (CR-NOMA) scheme in short packet …

In traditional cognitive radio (CR), secondary user (SU) can only access the idle spectrum
when primary user (PU) is absent, which has to vacate the spectrum when detecting the …

In 5G mobile technology, the expansion of Internet of Things (IoT) has created a huge need
for a wide variety of latency, dependability, and energy efficiency requirements, etc …

The integration of non-orthogonal multiple access (NOMA) technology and cognitive radio
networks (CRNs) promises to enhance the spectrum utilization efficiency of 5G and beyond …