Results 11 to 20 of about 95,222 (318)

Smart geographical routing protocol achieving high QoS and energy efficiency based for wireless multimedia sensor networks

open access: yesEgyptian Informatics Journal, 2022
Over the recent years, multimedia applications have begun to be used over wireless sensor networks (WSN), which hitherto has been primarily used to carry small amount of data.
Wael Ali Hussein   +3 more
doaj   +1 more source

SWORD: Towards a Soft and Open Radio Design for Rapid Development, Profiling, Validation and Testing

open access: yesIEEE Access, 2019
The vision, as we move to future wireless communication systems, embraces diverse qualities targeting significant enhancements from the spectrum, to user experience.
Georgios Georgis   +6 more
doaj   +1 more source

A Novel QoS-Aware Multi-Connectivity Scheme for Wireless IIoT

open access: yesIEEE Access, 2022
Wireless technology is envisioned to be a major enabler of flexible industrial deployments, allowing agile installations and mobility of production elements. However, for industrial IoT (IIoT) use-cases, reliability and service availability remain as key
Rasmus S. Mogensen   +6 more
doaj   +1 more source

Improved IP-level emulation for mobile and wireless systems [PDF]

open access: yes, 2007
More and more applications and protocols are now running on wireless networks. Testing such applications and protocols is a real challenge as the position of the mobile terminals and environmental effects strongly affect the overall performance.
Emmanuel Conchon   +8 more
core   +1 more source

A USRP-Based Multi-Antenna Testbed for Reception of Multi-Site Cellular Signals

open access: yesIEEE Access, 2019
This paper presents a design of a Software Defined Radio (SDR) multi-antenna testbed able to record live cellular signals from multiple sites. This measurement setup based on Universal Software Radio Peripheral (USRP) boards, is used to record live Long ...
Tomasz Izydorczyk   +3 more
doaj   +1 more source

Practical Hybrid Beamforming for Millimeter Wave Massive MIMO Full Duplex With Limited Dynamic Range

open access: yesIEEE Open Journal of the Communications Society, 2022
Full Duplex (FD) radio has emerged as a promising solution to increase the data rates by up to a factor of two via simultaneous transmission and reception in the same frequency band. This paper studies a novel hybrid beamforming (HYBF) design to maximize
Chandan Kumar Sheemar   +2 more
doaj   +1 more source

Optimisation of Lambertian order for indoor non-directed optical wireless communication [PDF]

open access: yes, 2012
This paper studies the optimised Lambertian order (OLO) of light-emitting diodes (LEDs) for an indoor non-directed line of sight optical wireless communication (NLOS-OWC) systems.
Ghassemlooy, Zabih   +11 more
core   +1 more source

Recent developments in indoor optical wireless systems [PDF]

open access: yes, 2008
An overview of the developments in optical wireless systems viewed from the traditional communications viewpoint of transmitter, channel and receiver is presented.
Leeson, Mark S.   +3 more
core   +1 more source

Optimal Energy Efficiency Based Power Adaptation for Downlink Multi-Cell Massive MIMO Systems

open access: yesIEEE Access, 2020
In this paper, the power transmission and energy efficiency (EE) in downlink multi-cell massive multiple-input-multiple-output (MIMO) systems are investigated and optimized.
Vahid Khodamoradi   +6 more
doaj   +1 more source

Semantic security for indoor THz-wireless communication

open access: yes, 2022
S.418-423Physical-layer security (PLS) for industrial indoor terahertz (THz) wireless communication applications is considered. We use a similar model as being employed for additive white Gaussian noise (AWGN) wireless communication channels.
Schaefer, R.F.   +6 more
core   +1 more source

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