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- research-articleJune 2024
Impact of Modulation Constellation Type on the Finite Signal-to-Noise Ratio Diversity Gain in the Presence of a Multipath Fading Channel
Problems of Information Transmission (PRIT), Volume 60, Issue 2Pages 90–112https://doi.org/10.1134/S0032946024020029AbstractThe evolution of wireless communication in the presence of multipath fading and shadowing is generally strained by the worsening of propagation conditions. Thus, in order to estimate the achievable improvements of the link quality (due to channel ...
- research-articleJanuary 2024
Energy Detector–Based Spectrum Sensing in Cognitive Radios Over α−κ−F Fading Channel
Journal of Computer Networks and Communications (JCNC), Volume 2024https://doi.org/10.1155/jcnc/5541283Cognitive radios (CRs) are envisioned as a potential solution, to provide spectrum-efficient communication for futuristic wireless communication systems like the Internet of Things (IoT) and others. This article examines the efficiency of CR’s detection ...
- research-articleNovember 2023
PAMLR: A Passive-Active Multi-Arm Bandit-Based Solution for LoRa Channel Allocation
BuildSys '23: Proceedings of the 10th ACM International Conference on Systems for Energy-Efficient Buildings, Cities, and TransportationPages 31–40https://doi.org/10.1145/3600100.3623725Achieving low duty cycle operation in low-power wireless networks in urban environments is complicated by the complex and variable dynamics of external interference and fading. We explore the use of reinforcement learning for achieving low power ...
- Work in ProgressApril 2023
NotiFade: Minimizing OHMD Notification Distractions Using Fading
CHI EA '23: Extended Abstracts of the 2023 CHI Conference on Human Factors in Computing SystemsArticle No.: 218, Pages 1–9https://doi.org/10.1145/3544549.3585784While animations can minimize attention costs for desktop notifications, their application for Optical see-through Head-Mounted Display (OHMD) notifications is underexplored. To investigate the effectiveness of animation on OHMD notifications in ...
- research-articleJanuary 2020
Multi-UAV cooperative spectrum sensing in cognitive UAV network
ICCIP '19: Proceedings of the 5th International Conference on Communication and Information ProcessingPages 273–278https://doi.org/10.1145/3369985.3370014Unmanned aerial vehicles (UAVs) are characterized by various functions, such as flexibility and easy operation, which enable them to be widely used in certain dangerous scenarios. Considering that the cooperative working mode of multi-UAV will have an ...
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- research-articleJanuary 2019
Controlling interferences in smart building IoT networks using machine learning
International Journal of Sensor Networks (IJSNET), Volume 30, Issue 1Pages 46–55https://doi.org/10.1504/ijsnet.2019.099233The coexistence of many internet of things (IoT) networks in smart buildings poses a major challenge because they interfere mutually. In most settings this results in a greedy approach where each IoT node optimises its own performance parameters like ...
- research-articleJuly 2018
Game‐theoretic resource allocation scheme for multiple‐amplify‐and‐forward‐relay wireless networks
IET Communications (CMU2), Volume 12, Issue 14Pages 1649–1660https://doi.org/10.1049/iet-com.2017.1202Mitigating the effect of fading in wireless networks has been a prominent benefit associated with cooperative relaying. Especially in multi‐relay scenarios, efficient resource allocation can drastically improve the performance of cooperative systems ...
- research-articleNovember 2017
Blind estimation of transmit‐antenna number for non‐Cooperative multiple‐input multiple‐output orthogonal frequency division multiplexing systems
IET Communications (CMU2), Volume 11, Issue 17Pages 2637–2642https://doi.org/10.1049/iet-com.2017.0184In this study, the authors propose a non‐parametric algorithm to implement the estimation of transmit‐antenna number, which is a prerequisite for blind interception process of multiple‐input multiple‐output orthogonal frequency division multiplexing ...
- research-articleNovember 2017
One Dimensional Vehicular Ad-hoc Network Connectivity Analysis Under Fading Conditions
Procedia Computer Science (PROCS), Volume 115, Issue CPages 615–625https://doi.org/10.1016/j.procs.2017.09.148Inter vehicle headway distance and channel fading are the two important highly random factors affecting the connectivity of vehicular ad-hoc networks (VANET). In this paper we investigate the combined effect of vehicle headway distance and channel ...
- research-articleMay 2017
Improved clustering algorithm based on energy consumption in wireless sensor networks
Wireless sensor networks (WSNs) are widely used in military, traffic, medical and so on. The design of routing protocol for WSNs is limited by the single nature of the local topology information. Meanwhile, the power supply of sensor networks node, ...
- surveyMarch 2017
Wireless Body Area Network (WBAN): A Survey on Reliability, Fault Tolerance, and Technologies Coexistence
ACM Computing Surveys (CSUR), Volume 50, Issue 1Article No.: 3, Pages 1–38https://doi.org/10.1145/3041956Wireless Body Area Network (WBAN) has been a key element in e-health to monitor bodies. This technology enables new applications under the umbrella of different domains, including the medical field, the entertainment and ambient intelligence areas. This ...
- research-articleJanuary 2017
Relayed FSO communication with aperture averaging receivers and misalignment errors
In this study, the performance of decode‐and‐forward relay‐assisted free‐space‐optical (FSO) communication systems under atmospheric turbulence‐induced fading and misalignment errors is investigated. To mitigate the adverse effects of the atmospheric ...
- articleNovember 2016
Wireless Channel Characterization for Indoor Environment in Thermal Power Plant
Electronics and Communications in Japan (WECJ), Volume 99, Issue 11Pages 3–12https://doi.org/10.1002/ecj.11879Wireless communications in industrial environments are seriously affected by reliability and performance issues, due to the multipath nature of obstacles within such environments. In order to utilize wireless systems for machine-to-machine applications ...
- articleFebruary 2016
Network-layer performance analysis of multihop fading channels
IEEE/ACM Transactions on Networking (TON), Volume 24, Issue 1Pages 204–217https://doi.org/10.1109/TNET.2014.2360675A fundamental problem for the delay and backlog analysis across multihop paths in wireless networks is how to account for the random properties of the wireless channel. Since the usual statistical models for radio signals in a propagation environment do ...
- research-articleDecember 2015
Studying the SINR Process of the Typical User in Poisson Networks Using Its Factorial Moment Measures
IEEE Transactions on Information Theory (ITHR), Volume 61, Issue 12Pages 6774–6794https://doi.org/10.1109/TIT.2015.2484348Based on a stationary Poisson point process, a wireless network model with random propagation effects (shadowing and/or fading) is considered in order to examine the process formed by the signal-to-interference-plus-noise ratio (SINR) values experienced ...
- articleNovember 2015
Geolocation-aware security in a netcentric small unmanned-aerial-system for RF emitters
Security and Communication Networks (SACN), Volume 8, Issue 16Pages 2661–2670https://doi.org/10.1002/sec.532Enhancing security requires sensing devices surveilling over critical infrastructures for early warning of radio frequency RF emitter geolocations. Conventional geolocation of RF emitters has adopted active methodologies by illuminating targets, such as ...
- research-articleNovember 2015
An Error Event Sensitive Tradeoff Between Rate and Coding Gain in MIMO MAC
IEEE Transactions on Information Theory (ITHR), Volume 61, Issue 11Pages 5931–5947https://doi.org/10.1109/TIT.2015.2479638This paper investigates the design of codes for multiple-input multiple-output (MIMO) multiple access channel (MAC). If a joint maximum-likelihood decoding is to be performed at the receiver, then every MIMO-MAC code can be regarded as a single-user code, ...
- research-articleOctober 2015
Average Fade Duration for Amplify-and-Forward Relay Networks in Fading Channels
IEEE Transactions on Wireless Communications (TWC), Volume 14, Issue 10Pages 5454–5467https://doi.org/10.1109/TWC.2015.2438815We analyze the level crossing rate and the average fade duration of amplify and forward multihop relay networks. We first calculate exact closed-form expressions for these statistics when the individual links are affected by log-normal fading with ...
- research-articleSeptember 2015
Mixed RF/FSO Relaying With Outdated Channel State Information
IEEE Journal on Selected Areas in Communications (JSAC), Volume 33, Issue 9Pages 1935–1948https://doi.org/10.1109/JSAC.2015.2433055We investigate the outage probability and the average bit error rate (BER) performance of a dual-hop amplify-and-forward (AF) relaying system, composed of a mixed radio frequency (RF)/free-space optical (FSO) link, when simultaneously outdated channel ...
- research-articleSeptember 2015
Performance Analysis of FSO Communications With Diversity Methods: Add More Relays or More Apertures?
IEEE Journal on Selected Areas in Communications (JSAC), Volume 33, Issue 9Pages 1890–1902https://doi.org/10.1109/JSAC.2015.2432526This paper targets the performance analysis of multiple-input-multiple-output (MIMO) point-to-point single-aperture relay-assisted and MIMO relay-assisted free-space optical (FSO) communications. The objective of the paper is to compare the different FSO ...