Results 1 to 10 of about 67,451 (260)

Asynchronous cooperative diversity [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2006
Cooperative diversity, which employs multiple nodes for the simultaneous relaying of a given packet in wireless ad hoc networks, has been shown to be an effective means of improving diversity, and, hence, mitigating the detrimental effects of multipath fading.
Shuangqing Wei   +2 more
exaly   +3 more sources

Amplify-and-Forward Cooperative Diversity for Green UWB-Based WBSNs [PDF]

open access: yesThe Scientific World Journal, 2013
This paper proposes a novel green cooperative diversity technique based on suboptimal template-based ultra-wideband (UWB) wireless body sensor networks (WBSNs) using amplify-and-forward (AF) relays.
Heba Shaban, Mohamad Abou El-Nasr
doaj   +2 more sources

A Survey on Cooperative Diversity for Wireless Networks

open access: yesIEEE Communications Surveys and Tutorials, 2011
Diversity, i.e. transmitting multiple replicas of a signal, may mitigate fading in wireless networks. Among other diversity techniques, the space diversity of multi-antenna systems is particularly interesting since it can complement other forms of diversity.
Rafael Asorey-Cacheda   +1 more
exaly   +3 more sources

Developing Cost-Effective and High-Speed 40 Gbps FSO Systems Incorporating Wavelength and Spatial Diversity Techniques

open access: yesFrontiers in Physics, 2021
Free-space optical (FSO) communication systems are being anticipated to offer promising alternatives to existing radio networks in delivering high-speed data access to end-users.
Satish Kumar Modalavalasa   +5 more
doaj   +1 more source

Policy Diversity for Cooperative Agents

open access: yes2023 IEEE Conference on Games (CoG), 2023
Standard cooperative multi-agent reinforcement learning (MARL) methods aim to find the optimal team cooperative policy to complete a task. However there may exist multiple different ways of cooperating, which usually are very needed by domain experts. Therefore, identifying a set of significantly different policies can alleviate the task complexity for
Mingxi Tan, Andong Tian, Ludovic Denoyer
openaire   +2 more sources

Link and Loss Aware GW-COOP Routing Protocol for FANETs

open access: yesIEEE Access, 2021
The dynamic network topology of Flying Ad hoc Networks (FANETs) leads to challenges during communications. This becomes complicated when dealing with multiple transmission paths and relays.
Shahzad Hameed   +8 more
doaj   +1 more source

Diversity through coded cooperation [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2006
Motivated by the recent works on the relay channel and cooperative diversity, this letter introduces coded cooperation, where cooperation is achieved through channel coding methods instead of a direct relay or repetition. Each codeword is partitioned into two subsets that are transmitted from the user's and partner's antennas, respectively.
Todd E. Hunter, Aria Nosratinia
openaire   +1 more source

On the Cooperative Relaying Strategies for Multi-Core Wireless Network-on-Chip

open access: yesIEEE Access, 2021
Recently, hybrid wired-wireless Network-on-Chip (WiNoC) has been proposed as a suitable communication fabric to provide scalability and satisfy high performance demands of the exascale era of modern multi/many-core System-on-Chip (SoC) design.
Quoc-Tuan Vien   +3 more
doaj   +1 more source

The Influence of Student Diversity on Applying Cooperative Learning in Ethiopian Polytechnic Colleges

open access: yesEducation Sciences, 2023
Cooperative learning is more effective in a well-managed classroom with diverse ethnic, linguistic, and religious backgrounds. To that end, this study examined the state of applications of cooperative learning and student diversity in polytechnic ...
Getachew Robo Gebremariam   +2 more
doaj   +1 more source

Cooperative diversity with opportunistic relaying [PDF]

open access: yesIEEE Wireless Communications and Networking Conference, 2006. WCNC 2006., 2006
In this paper, we present single-selection-opportunistic-relaying with decode-and-forward (DaF) and amplify-and-forward (AaF) protocols under an aggregate power constraint. We show that opportunistic DaF relaying is equivalent to the outage bound of the optimal DaF strategy using all potential relays.
Aggelos Bletsas   +3 more
openaire   +1 more source

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