Results 121 to 130 of about 887 (159)

Randomized, double-blind, placebo-controlled trial of fecal microbiota transplantation from young physically active donors to promote resilient aging: clinical trial protocol (ARMOR study). [PDF]

BMC Geriatr
Astudillo-Guerrero C, Garrido Á, Masferrer D, Sepúlveda C, Olavarría L, Del Campo R, Bravo-Sagua R, Cubero FJ, Salech F, Thumala-Dockendorff D, Urrutia PJ, Quera R, Bunout D, Espinoza R, Jorquera G.   +14 more
europepmc   +1 more source

Distributed sensing along fibers for smart clothing. [PDF]

Sci Adv
Hannigan BC, Cuthbert TJ, Ahmadizadeh C, Menon C.   +3 more
europepmc   +1 more source

Prevalence of arboviruses in sickle cell disease patients from two different regions of Brazil, the North and Northeast. [PDF]

Braz J Infect Dis
Souza Gonçalves M, Albuquerque CCMX, Yahouedehou SCMA, Francisco MVL, Fraiji NA, de Siqueira IC, Gonçalves MS.   +6 more
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Enabling SCMA long codewords with a parallel SCMA coding scheme

2015 International Conference on Wireless Communications & Signal Processing (WCSP), 2015
Fifth generation (5G) wireless networks require massive connectivity with a large number of devices and ask for non-orthogonal multiple access which has been proposed as a paradigm shift of physical layer technologies. Among all the existing non-orthogonal technologies where the number of users can be larger than the spreading factor, recently proposed
Yuxi Han, Sihai Zhang, Wuyang Zhou, Qing Ling   +3 more
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Dynamically changing SCMA codebooks

2017 International Siberian Conference on Control and Communications (SIBCON), 2017
Sparse code multiple access is a new method for non-orthogonal multiplexing proposed in the framework of the 5G concept development. Noise immunity of this method depends directly on the codebooks. The article reviews the method of forming dynamically changing complex numbers of SCMA codebooks depending on the signal noise ratio. The method is based on
D. A. Pokamestov, A. Ya. Demidov, Ya. V. Kryukov, E. V. Rogozhnikov   +3 more
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SCMA Decoding via Deep Learning

IEEE Wireless Communications Letters, 2021
Sparse code multiple access (SCMA) has become a highly competitive technology for future cellular systems. For the receiver of the SCMA system, besides the traditional maximum likelihood and message passing algorithm solutions, a deep neural network (DNN) method that causes whirlwinds in image recognition can reduce the computational complexity of the ...
Chia-Po Wei, Han Yang, Chih-Peng Li, Yen-Ming Chen   +3 more
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Deep Learning-Aided SCMA

IEEE Communications Letters, 2018
Sparse code multiple access (SCMA) is a promising code-based non-orthogonal multiple-access technique that can provide improved spectral efficiency and massive connectivity meeting the requirements of 5G wireless communication systems. We propose a deep learning-aided SCMA (D-SCMA) in which the codebook that minimizes the bit error rate (BER) is ...
Minhoe Kim, Nam-I Kim, Woongsup Lee, Dong-Ho Cho   +3 more
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Uplink Spatial Modulation SCMA System

IEEE Communications Letters, 2019
Multiple-input multiple-output (MIMO) and sparse code multiple access (SCMA) are two effective techniques supporting high spectral efficiency and massive connectivity, respectively. Although the combination of these two techniques, namely MIMO-SCMA, can further improve the spectral efficiency, it deteriorates the error performance and greatly increases
Zhipeng Pan, Junshan Luo, Jing Lei, Lei Wen, Chaojing Tang   +4 more
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Adapting SCMA Codebooks to Channel State

2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE), 2021
Non-orthogonal multiple access (NOMA) methods are a promising technology for organizing the physical layer of next generation communication networks. Sparse code multiple access (SCMA) is one of the most efficient NOMA implementations. The SCMA method is based on the use of codebooks – sets of sparse signals.
Dmitriy A. Pokamestov, Yakov V. Kryukov, Eugeniy V. Rogozhnikov, Islam Kanatbekuli   +3 more
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A novel codeword grouped SCMA

2015 IEEE 6th International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE), 2015
In the future 5G, the fast-growing requirements of massive connectivity, higher data-rate transmissions and multiple services should be matched with new multiple access technology. Non-orthogonal multiple access, nowadays, is considered as an effective method to solve those problems. Some non-orthogonal multiple access technologies, e.g.
Jun Wang, null Hui Zhao, null Yuexing Peng, null Sha Liu, null Senyao Zheng   +4 more
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