Results 51 to 60 of about 854,563 (301)
The challenges facing road-side ‘m-Preneurs’ in leap-frogging the constraints of ICTs in DCs: A Nigerian case study [PDF]
, 2017 Studies have shown that the number of mobile telecommunications operators in Nigeria has been on the increase since the first Global System of Mobile Telecommunications (GSM) licence was granted to MTN (Mobile Telecommunications Network) in 2001 ...
Ojukwu , Dili
core
n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz
Advanced Materials, EarlyView.Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis +19 more
wiley +1 more source
Benefits of Beamforming Training Scheme in Distributed Large-Scale MIMO Systems
IEEE Access, 2018 The downlink training yields rather modest performance gains due to the high degree of channel hardening effect in co-located large-scale multi-input multi-output (MIMO) systems. However, in distributed large-scale MIMO systems, the potential benefits of
Jiamin Li +3 more
doaj +1 more source
Smart Closed‐Loop Systems in Personalized Healthcare: Advances and Outlook
Advanced Materials Technologies, EarlyView.A smart closed‐loop e‐textile integrates multimodal sensing, onboard processing, wireless communication, and wearable power to enable real‐time physiological/biochemical monitoring and feedback‐controlled therapy. ABSTRACT Smart textiles represent a revolutionary frontier in healthcare, seamlessly blending fabric and advanced technologies to create ...
Safoora Khosravi +12 more
wiley +1 more source
Energy Efficient Joint Power Optimization for Full-Duplex Relaying
IEEE Access, 2019 Full-duplex (FD) relaying is a promising technology for the next generation communication systems. In this paper, we aim to jointly optimize the source and relay transmit powers to maximize the energy efficiency (EE) for both amplify-and-forward (AF) and
Zhenyao He +3 more
doaj +1 more source
Hierarchical Energy Efficient Hybrid Precoding for Configurable Sub-Connected MIMO Systems
IEEE Access, 2021 This paper proposed a configurable sub-connected architecture with a framework that dynamically activates the near-optimal subset of antennas and RF chains to implement energy-efficient hybrid precoding in millimeter wave multiple-input multiple-output ...
Xiang Li, Yang Huang, Wei Heng, Jing Wu
doaj +1 more source
Mobile-awareness:designing for mobile interactive systems [PDF]
, 2001 In recent years, we have witnessed a significant increase in the availability and adoption of mobile devices with wireless communications capabilities.
Cheverst, Keith +3 more
core +2 more sources
Advanced Materials Technologies, EarlyView.This review presents recent progress in vision‐augmented wearable interfaces that combine artificial vision, soft wearable sensors, and exoskeletal robots. Inspired by biological visual systems, these technologies enable multimodal perception and intelligent human–machine interaction.
Jihun Lee +4 more
wiley +1 more source
Optimized Full-Duplex MIMO DF Relaying With Limited Dynamic Range
IEEE Access, 2017 This paper investigates the transceiver optimization of full-duplex multiple-input multipleoutput decode-and-forward (DF) relaying by taking into account the practical factor of limited dynamic range (LDR).
Hong Shen +3 more
doaj +1 more source
Consumer Appraisals of Mobile Marketing Communications [PDF]
, 2006 This paper reports on a study that investigates the emotions elicited from appraising SMS-based mobile marketing (m-marketing) communications under three marketing conditions: product consistency, incentives and permission giving.
Andrews, Lynda +2 more
core +1 more source