Results 11 to 20 of about 67,451 (260)

Log Likelihood Ratio Based Relay Selection Scheme for Amplify and Forward Relaying with Three State Markov Channel

open access: yesFuture Internet, 2018
This paper presents log likelihood ratio (LLR) based relay selection scheme for a cooperative amplify and forward relaying system. To evaluate the performance of the aforementioned system model, a three state Markov chain based fading environment has ...
Manish Sahajwani   +2 more
doaj   +1 more source

Multiuser Cooperative Diversity for Wireless Networks

open access: yesEURASIP Journal on Wireless Communications and Networking, 2006
Tellambura Chintha   +3 more
doaj   +2 more sources

An Optimized Relay Selection Technique to Improve the Communication Reliability in Wireless Sensor Networks

open access: yesSensors, 2018
Wireless Sensor Networks (WSN) are enabler technologies for the implementation of the Internet of Things (IoT) concept. WSNs provide an adequate infrastructure for the last-link communication with smart objects.
Suelen Laurindo   +4 more
doaj   +1 more source

Exploiting Outage and Error Probability of Cooperative Incremental Relaying in Underwater Wireless Sensor Networks

open access: yesSensors, 2016
This paper embeds a bi-fold contribution for Underwater Wireless Sensor Networks (UWSNs); performance analysis of incremental relaying in terms of outage and error probability, and based on the analysis proposition of two new cooperative routing ...
Hina Nasir   +6 more
doaj   +1 more source

Amplify-and-Forward Relaying Based Spectrum Sharing in Both Time and Spectrum Domains With Wireless Powered Primary User

open access: yesIEEE Access, 2019
We propose a spectral and energy efficient cooperative spectrum sharing scheme with the primary user (PU) capable of harvesting wireless energy. Along with an access point (AP) transferring wireless power to PU, a secondary source (SS) and a secondary ...
Lina Zheng, Chao Zhai
doaj   +1 more source

Optimal Relay Selection using jellyfish Optimization Algorithm for Image Transmission over Multiuser Cooperative Communication Networks [PDF]

open access: yesJES: Journal of Engineering Sciences, 2023
A recent study and research have shown that the relay selection schemes for cooperative communication can achieve full cooperative diversity gains and still maintains energy efficiency.
fatma mohamed   +2 more
doaj   +1 more source

A Low Complexity Approach of Combining Cooperative Diversity and Multiuser Diversity in Multiuser Cooperative Networks [PDF]

open access: yesIEEE Transactions on Signal Processing, 2013
10 pages, 7 figures, accepted by IEEE Transactions on Signal Processing, to be fully published in Nov.
Tiejun Lv, Zhang Zhang, Shaoshi Yang
openaire   +4 more sources

Throughput Analysis of ALOHA with Cooperative Diversity [PDF]

open access: yesIEEE Communications Letters, 2008
Cooperative transmissions emulate multi-antenna systems and can improve the quality of signal reception. In this paper, we propose and analyze a cross layer random access scheme, C-ALOHA, that enables cooperative transmissions in the context of ALOHA system.
Göktürk, Sarper Muharrem   +2 more
openaire   +3 more sources

Including Diversity Through Cooperation

open access: yesProcedia Computer Science, 2012
AbstractIn this article we describe the experience of several Portuguese Higher Education Institutions (HEI) that in the midst of a legislative void regarding the inclusion of students with special education's needs, try to work their way into the inclusion of those students through cooperation.We will focus on how that cooperation came into being, the
Alice Ribeiro   +1 more
openaire   +2 more sources

On Cooperative Relay in Cognitive Radio Networks

open access: yesEAI Endorsed Transactions on Mobile Communications and Applications, 2013
Cognitive radios (CR) and cooperative communications represent new paradigms that both can effectively improve the spectrum efficiency of future wireless networks.
Donglin Hu, Shiwen Mao
doaj   +1 more source

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