Results 21 to 30 of about 3,430 (173)
Quasi-Concavity for Gaussian Multicast Relay Channels
Entropy, 2019 Standard upper and lower bounds on the capacity of relay channels are cut-set (CS), decode-forward (DF), and quantize-forward (QF) rates. For real additive white Gaussian noise (AWGN) multicast relay channels with one source node and one relay node ...
Mohit Thakur, Gerhard Kramer
doaj +1 more source
Hybrid Decode-Forward & Amplify-Forward Relaying With Non-Orthogonal Multiple Access
IEEE Access, 2016 Cooperative communication has used to be a hot topic and it has been studied extensively in the past 10 years, but in recent years, it becomes less likely to find substantial innovation in this field as before.
Yang Liu +3 more
doaj +1 more source
Optimal Relay Selection Scheme Based on Hybrid Decode-Amplify-and-Forward [PDF]
Jisuanji gongcheng, 2017 In order to extend the network life on the base of lower Symbol Error Rate(SER),a relay selection scheme based on Hybrid Decode-Amplify-and-Forward(HDAF) relaying method is proposed.Joint optimization function about receiving Signal to Noise Ratio(SNR ...
SUN Wensheng,LI Leyuan
doaj +1 more source
Secrecy Performance Analysis of Relay Selection in Cooperative NOMA Systems
IEEE Access, 2019 This paper investigates the security performance of two relay selection schemes for cooperative non-orthogonal multiple access (NOMA) systems, where K randomly distributed relays are employed with either decode-and-forward (DF) or amplify-and-forward (AF)
Zhenling Wang, Zhangyou Peng
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Code-rate-optimized differentially modulated near-capacity cooperation [PDF]
, 2011 It is widely recognized that half-duplex-relay-aided differential decode-and-forward (DDF) cooperative transmission schemes are capable of achieving a cooperative diversity gain, while circumventing the potentially excessive-complexity and yet inaccurate
Wang, Li +3 more
core +2 more sources
Spectrum and Energy Efficiency Equilibrium Scheme for Decode and Forward Relay Networks [PDF]
Jisuanji gongcheng, 2020 In order to reduce network resource consumption and ensure green communication,this paper proposes a scheme to balance Spectrum Efficiency(SE) and Energy Efficiency(EE) of Decode and Forward(DF) Two-Way Relay Transmission(TWRT) and One-Way Relay ...
GAO Zhongxia, QIU Runhe
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ICT Express, 2019 In this letter, we propose two power allocation strategies, named Optimal Power Allocation (OPA) and Equal Intercept Probability (EIP), for dual-hop cooperative decode-and-forward (DF) relaying networks under constraint of intercept probability (IP ...
Phu Tran Tin, Tran Trung Duy
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IEEE AccessThis paper introduces the cooperative quadrature spatial modulation (CQSM) system with hybrid decode-amplify-forward (HDAF) relaying protocol. Compered with the traditional CQSM system which only uses amplify-and-forward (AF) protocol and decode-and ...
Xiangyan Bu, Ke Pang
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Energy Efficiency of a Decode-and-Forward Multiple-Relay Network with Rate Adaptive LDPC Codes
Sensors, 2019 This paper presents cooperative transmission (CT), where multiple relays are used to achieve array and diversity gains, as an enabling technology for Internet of Things (IoT) networks with hardware-limited devices.
Bushra Bashir Chaoudhry +3 more
doaj +1 more source
Advanced Science, EarlyView.Two‐photon calcium imaging in behaving 5xFAD mice reveals early CA1 coding deficits before behavioral decline. Task‐related place cell activity and splitter cell trajectory coding are impaired, with reduced retrospective dominance and greater prospective weighting.
Yimei Li +8 more
wiley +1 more source