We investigate the problem of designing efficient and low-complexity centralized algorithms for joint power admission control in a cellular cognitive radio network (CRN) which coexists with primary (PRN) spectrum underlay fashion. first derive simple one-to-one relation between signal-to-interference-plus-noise ratio (SINR) vector its corresponding all users CRN PRN, based on this we propose two new metrics. Then, an infeasible system, where minimum acceptable target-SINRs secondary are not...

The stabilizability of wireless networked control systems (WNCSs) is a deterministic binary valued parameter proven to hold if the communication data rate higher than sum logarithm unstable eigenvalues open-loop system. In this analysis, it assumed that system provides fixed transmission between sensors and controllers. Due stochastic parameters channels, such as small-scale fading, instantaneous an intrinsically parameter. sense, common practice in literature use ergodic analyzing...

Communication reliability, as defined by 3GPP, refers to the probability of providing a desired quality service (QoS). This metric is typically quantified for wireless networks averaging QoS success indicator over spatial and temporal random variables. Recently, meta distribution (MD) has emerged two-level performance analysis tool networks, offering detailed examination outer level (i.e., system-level) reliability assessment versus inner link-level) thresholds. Most existing studies focus...

Current spectrum-sharing frameworks struggle with adaptability, often being either static or insufficiently dynamic. They primarily emphasize temporal sharing while overlooking spatial and spectral dimensions. We propose an adaptive, AI-driven framework within the O-RAN architecture, integrating discriminative generative AI (GenAI) to forecast spectrum needs across multiple timescales granularities. A marketplace model, managed by authorized broker, enables operators trade dynamically,...

We develop a comprehensive framework to characterize and optimize the performance of unmanned aerial vehicle (UAV)-assisted D2D network, where transmissions underlay cellular transmissions. Different from conventional non-line-of-sight (NLoS) terrestrial transmissions, are highly likely experience line-of-sight (LoS). As such, characterizing mixed aerial-terrestrial networks with accurate fading models is critical precise network characterization resource optimization. first closed-form...

Communication reliability, as defined by 3GPP, refers to the probability of providing a desired quality service (QoS). This metric is typically quantified for wireless networks averaging QoS success indicator over spatial and temporal random variables. Recently, meta distribution (MD) has emerged two-level performance analysis tool networks, offering detailed examination outer level (i.e., system-level) reliability assessment versus inner link-level) thresholds. Most existing studies focus...

In the state-of-the-art interference management schemes for underlay CRNs, it is considered that all PUs are protected if cognitive each primary receiving-point lower than a maximum threshold, so called temperature limit (ITL) corresponding receiving-point. This assumed to be fixed and independent of ITL values other receiving-points, which corresponds box-like FCIR. this paper, we characterize FCIR {\em uplink} transmissions in cellular CRNs direct ad-hoc CRNs. We show fact polyhedron...

We propose a novel approach to smart spot-beamforming (SBF) in the Fresnel zone leveraging extremely large-scale programmable metasurfaces (ELPMs). A SBF scheme aims adaptively concentrate aperture's radiating power exactly at desired focal point (DFP) 3D space utilizing some Machine Learning (ML) method. This offers numerous advantages for next-generation networks including ultra-high-speed wireless communication, location-based multiple access (LDMA), efficient transfer (WPT), interference...

In the well-known distributed target-SINR-tracking power control algorithm (TPC), when system is infeasible, some users transmit at maximum without obtaining their target-SINRs. This imposes extra interference on other and results in an increased number of non-supported users. Several ideas have been proposed to alleviate this deficiency, most which employ a removal scheme for who cannot attain paper, we propose multiple target-SINRs tracking (MTPC) instead single target-SINR (as case...

Non-orthogonal multiple access (NOMA) is a promising technique for beyond fifth generation (B5G) cellular wireless networks, where several users can be served on single time-frequency resource block, using the concepts of superposition coding at transmitter and self-interference cancellation (SIC) receiver. For terrestrial achievable performance gains NOMA over traditional orthogonal (OMA) are well-known. However, in aerial compared to not well-understood. In this paper, we provide unified...

Next generation cellular networks will consist of multiple tiers cells and users associated with different network may have priorities (e.g., macrocell-picocell- femtocell macro tier prioritized over pico tier, which is again femto tier). Designing efficient joint power admission control (JPAC) algorithms for such under a cochannel deployment (i.e., underlay) scenario significant importance. Feasibility checking given target signal-to-noise-plus-interference ratio (SINR) vector generally the...

In an underlay cognitive radio network (CRN), in order to guarantee protection of primary users (PUs) (i.e., all PUs achieve their target signal-to-interference-plus-noise ratios [SINRs]), the interference caused by secondary (SUs) receiving-points should be controlled. To do so, feasible region (FCIR), i.e., for allowable values at receiving-points, which protecting PUs, needs formally characterized. state-of-the-art management schemes CRNs, it is considered that are protected if each...

Transmit antenna selection (TAS) at base station has been widely studied and employed in many communication networks (such as those using massive multiple-input multiple-output (MIMO) systems). Thanks to the small size of microstrip elements applicable millimeter-wave (mmWave) frequencies, implementation TAS user equipments (UEs) employing switchable directional antennas is recently becoming popular. In this paper, we consider device-to-device (D2D) communications underlaying a cellular...

Spot beamfocusing (SBF) is the process of focusing signal power in a small spot-like region 3D space, which can be either hard-tuned (HT) using traditional tools like lenses and mirrors or electronically reconfigured (ER) modern large-scale intelligent surface phased arrays. ER-SBF key enabling technology (KET) for next-generation 6G wireless networks offering benefits to many future application areas such as communication security, mid-range chargers, medical health, physics, etc. Although...

3D spot beamfocusing (SBF), in contrast to conventional angular-domain beamforming, concentrates radiating power within very small volume both radial and angular domains the near-field zone. Recently implementation of channel-state-information (CSI)-independent machine learning (ML)-based approaches have been developed for effective SBF using extremely-largescale-programable-metasurface (ELPMs). These methods involve dividing ELPMs into subarrays independently training them with Deep...

This paper presents the characterization of near-field propagation regions for phased array antennas, with a particular focus on boundaries defined by Fraunhofer and Fresnel distances. These distances, which serve as critical understanding signal behavior, have been extensively studied characterized in literature single-element antennas. However, direct application these results to arrays, common practice field, is argued be invalid non-exact. work calls deeper accurately characterize such...