Industrial metaverse, as an emerging paradigm of the next generation industry transformation, aims to build a fully immersive virtual space that can interact with physical in real time, and enhance its operation process efficiency. Short-packet communication takes substantial portion data exchange, which requires extremely high reliability low latency, keep information fresh, measure Age Information (AoI), Given stringent requirements, coupled systems limited resources, achieving interactive...

We provide a comprehensive energy efficiency (EE) analysis of the full-duplex (FD) and half-duplex (HD) amplify-and-forward (AF) relay-assisted 60-GHz dual-hop indoor wireless systems, aiming to answer question which relaying mode is greener (more efficient) address issue EE optimization. develop an opportunistic selection scheme, where FD with one-stage self-interference cancellation (passive suppression) or two-stage suppression + analog cancellation) HD opportunistically selected,...

Modern software engineering practice increasingly brings redundant code into products, which has caused a phenomenon called bloatware, leading to system maintenance, performance and reliability issues as well security problems. With the rapid advances of smart devices more connected world, it is never important trim bloatware improve leanness, agility, reliability, performance, interconnected network systems. Previous methods have limited scopes are usually not fully automated. In this...

Full-duplex (FD) relaying is a promising solution for fifth generation (5G) wireless communications due to its potential provide high spectral efficiency (SE) transmission. However, FD relay nodes consume much higher power than half-duplex nodes, especially in millimeter (mm)-wave band. Therefore, energy-efficiency (EE) an important issue address mm-wave systems, which highlights the green evolution of 5G communications. Existing related research SE-oriented, not efficient cutting carbon...

In the mining process of II1 coal seam at Zhaogu No. 2 mine, a method stratified is employed, leaving relatively wide pillars in sections. To enhance resource recovery rate, mine carries out cooperative sectional and lower layer seam. The 14,022 working face fully-mechanized top-coal caving taken as research object. Through numerical simulation, theoretical calculations, on-site industrial trials, comprehensive analysis overburden structural characteristics support adaptability conducted. It...

Light fidelity (LiFi), using light emitting devices such as diodes (LEDs) which are operating in the visible spectrum between 400 and 800 THz, provides a new layer of wireless connectivity within existing heterogeneous radio frequency networks. Link data rates 10 Gbps from single transmitter have been demonstrated under ideal laboratory conditions. Synchronization is one these issues usually assumed to be ideal. However, practical deployment, this no longer valid assumption. Therefore, we...

Abstract Invited for the cover of this issue is group Qiang Wu and Zheng Hu at Nanjing University. The image depicts sulfur nitrogen codoped carbon tubes as bifunctional metal‐free electrocatalysts oxygen reduction hydrogen evolution in acidic media. Read full text article 10.1002/chem.201601535 .

Both information age and delay are critical performance metrics of emerging time-sensitive applications. However, their inherent correlation in the finite block length (FBL) regime has remained uninvestigated as it is affected by update rate a complex manner. In this paper, closed-form expressions for average (AoI), peak AoI (PAoI) derived an FBL Last-Come First-Served system with retransmission non-preemption policies, based on which comprehensive analysis relationship among three...

In this paper, we investigate unmanned aerial vehicle (UAV) assisted communication systems that require quasi-balanced data rates in uplink (UL) and downlink (DL), as well users’ heterogeneous traffic. To the best of our knowledge, is first work to explicitly joint UL-DL optimization for UAV under requirements. A hybrid-mode multiple access (HMMA) scheme proposed toward traffic, where non-orthogonal (NOMA) targets high average rate, while orthogonal (OMA) aims meet instantaneous rate demands...

Age of information (AoI) is an effective measure the freshness for wireless networked control systems (WNCSs). However, AoI performance a closed loop WNCS with two-way delays has remained unexplored, especially in finite blocklength (FBL) regime. In this paper, we investigate peak age (PAoL) performances, including average, variance and outage probability PAoL, WNCSs FBL over fading channels. Their closed-form expressions are respectively derived regarding maximum number allowable...

Modern software engineering practice allows us tobuild more complex than ever before. However, onthe other hand, it causes some negative consequences such asbloatware and feature creep which have been observed in manysoftware evolution iteration lifecycle. In this paper, we proposean approach to customizing Java bytecode by applying static dataflow analysis enhanced programming slicing technique. This developers customize programs based on various users' requirements or remove...

Smartphone users are installing more and bigger apps. At the meanwhile, each app carries considerable amount of unused stuff, called software bloat, in its apk file. As a result, resources smartphone, such as hard disk network bandwidth, has become even insufficient than ever before. Therefore, it is critical to investigate existing apps on market development identify sources bloat develop techniques tools remove bloat. In this paper, we present comprehensive study Android applications,...

We consider a multi-cell non-orthogonal multiple access (NOMA) system with coordinated base stations and investigate its downlink user coordination mode selection resource allocation to green the while maintaining high spectral efficiency, in presence of inter-cell interference. To best our knowledge, this is first work criteria for NOMA systems, fuzzy logic (FL) based approach proposed balance among achieve higher robustness against combined effect shadowing, fading interference, compared...

An interference alignment (IA) and independent component analysis (ICA)-based semiblind scheme, referred to as IA-ICA, is proposed for downlink dual-user power-domain nonorthogonal multiple access (NOMA) systems in high-reliability low-latency (HRLL) Internet of Things (IoT). At the base station (BS), one user converted constructive other via phase each symbol. both ends, ICA used signal detection. The rotation nonredundant precoding at BS does not introduce any spectral overhead, while only...

We investigate a multi-device ultra-reliable low-latency communication system with heterogeneous traffic and finite block length over temporally-correlated fading channels. In light of the challenging demand for accurate channel estimation limited pilot in short frame, two frame structures, which respectively adopt independent pilots shared pilot, are investigated. Block lengths jointly optimized through instantaneous state information (CSI) based dynamic optimization statistical CSI static...

Channel estimation for multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDM) systems is a challenging issue in high mobility scenarios due to prohibitive pilot overhead and complexity. In this paper, hierarchical basis expansion model (BEM) based channel scheme proposed doubly selective channels, which requires low computational A mixed-BEM time-varying channels alongside complex exponential-BEM (CE-BEM), resulting very few unknown parameters required estimation....

Energy efficient building design, construction, and operations require the development sharing of information among different individuals, organizations, computer applications. Building Information Modeling (BIM) servers are tools used to enable an effective exchange data. This paper describes investigation into core BIM server requirements needed effectively support related energy retrofit projects. The have been developed through analysis existing functional capabilities combined with a...

In this article, we focus on a wireless-powered body area network in which the simultaneous wireless information and power transfer (SWIPT) technique is adopted. We consider two scenarios based whether sensor nodes (SNs) are equipped with battery. For first time, energy consumption minimization throughput heterogeneity (ECM-TH) problem addressed for both scenarios. battery-free scenario, low-complexity time allocation scheme proposed. This solves ECM-TH hybrid method of gradient descent...

Industrial metaverse aims to empower holographic intelligent manufacturing by mapping the industrial environment into a virtual world in real time. Wireless communication plays pivotal role as bridge between and worlds, making it indispensable for metaverse. However, limited radio resources, combined with diverse requirements of various tasks, bring significant challenges achieving satisfactory data transmission In this context, we are motivated investigate wireless communication, i.e.,...