Results 21 to 30 of about 2,780,357 (337)
Cooperative Non-Orthogonal Multiple Access for Beyond 5G Networks
IEEE Open Journal of the Communications Society, 2021 In the beyond 5G networks, extraordinary demands for data rates and capacity are to be met. A possible candidate to address these challenges is Non-Orthogonal Multiple Access (NOMA) technique, which leads to higher diversity gains and massive ...
Abbas Ahmed +3 more
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On Cooperative Relay in Cognitive Radio Networks
EAI 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
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Distributed Linear Convolutional Space-Time Coding for Two-Relay Full-Duplex Asynchronous Cooperative Networks [PDF]
, 2013 In this paper, a two-relay full-duplex asynchronous cooperative network with the amplify-and-forward (AF) protocol is considered. We propose two distributed space-time coding schemes for the cases with and without cross-talks, respectively.
Liu, Yi, Xia, Xiang-Gen, Zhang, Hailin
core +1 more source
Cooperative differential space-time spreading for the asynchronous relay aided CDMA uplink using interference rejection spreading code [PDF]
, 2010 —This letter proposes a differential Space–Time Coding (STC) scheme designed for asynchronous cooperative networks, where neither channel estimation nor symbol-level synchroniza-tion is required at the cooperating nodes.
Chen, Sheng +2 more
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Effects of CSI Knowledge on Secrecy of Threshold-Selection Decode-and-Forward Relaying
IEEE Access, 2017 This paper considers secrecy of a three node cooperative wireless system in the presence of a passive eavesdropper. The threshold-selection decode-and-forward relay is considered, which can decode the source message correctly only if a predefined signal ...
Chinmoy Kundu +5 more
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EURASIP Journal on Wireless Communications and Networking, 2009 The study of relaying systems has found renewed interest in the context of cooperative diversity for communication channels suffering from fading. This paper provides analytical expressions for the end-to-end SNR and outage probability of cooperative ...
D. Skraparlis +3 more
doaj +2 more sources
Journal of Responsible Technology, 2020 Covid-19 changes the lives for all of us: Institutions and other places are closed; it is not possible to see friends and family personally and keeping distance is the topmost commandment. Therefore, most of us are working from home and digitalisation is
Karin Grasenick, Manuel Guerrero
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Policy Diversity for Cooperative Agents
2023 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
Tan, Mingxi +2 more
openaire +2 more sources
On Security and Reliability using Cooperative Transmissions in Sensor Networks [PDF]
, 2010 Recent work on cooperative communications has demonstrated benefits in terms of improving the reliability of links through diversity and/or increasing the reach of a link compared to a single transmitter transmitting to a single receiver (single-input ...
Aksu, Aylin +3 more
core +4 more sources
IEEE Access, 2020 In this paper, a novel signal-space diversity (SSD) technique based multipoint-to-multipoint cooperative scheme for a multiuser free-space optical communication system is proposed.
Anshul Jaiswal +3 more
doaj +1 more source