Results 51 to 60 of about 128,513 (359)
A class of nearly optimal codebooks and their applications in strongly regular Cayley graphs
AIMS MathematicsCodebooks with small inner-product correlations are desirable in many fields, including compressed sensing, direct spread code division multiple access (CDMA) systems, and space-time codes.
Qiuyan Wang +3 more
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An Uplink SCMA Codebook Design Combining Probabilistic Shaping and Geometric Shaping
IEEE Access, 2020 Sparse Code Multiple Access (SCMA) is a promising non-orthogonal multiple access scheme owning to the shaping gain of its multi-dimensional codebook. Most of the existing designs of the codebook are based on geometric shaping (GS), while probabilistic ...
Chengxin Jiang, Yafeng Wang
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Embedding Secret Data in a Vector Quantization Codebook Using a Novel Thresholding Scheme
MathematicsIn recent decades, information security has become increasingly valued, including many aspects of privacy protection, copyright protection, and digital forensics. Therefore, many data hiding schemes have been proposed and applied to various carriers such
Yijie Lin +3 more
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Design Low Complexity SCMA Codebook Using Arnold’s Cat Map
Journal of Telecommunications and Information Technology, 2022 In 5G wireless communications, sparse code multiple access (SCMA) – a multi-dimensional codebook based on a specific category of the non-orthogonal multiple access (NOMA) technique - enables many users to share non-orthogonal resource components with a ...
Sura S. Mohamed, Hikmat N. Abdullah
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BMC Medical Research Methodology, 2019 BackgroundNavigating the world of qualitative thematic analysis can be challenging. This is compounded by the fact that detailed descriptions of methods are often omitted from qualitative discussions.
K. Roberts, A. Dowell, J. Nie
semanticscholar +1 more source
Agribusiness, EarlyView.ABSTRACT The cocoa‐chocolate value chain faces significant environmental and social challenges, driving firms to adopt sustainability strategies ranging from individual practices to third‐party certifications. This study investigates the factors associated with these strategies by analyzing 304 cocoa‐chocolate companies using firm‐level data from the ...
Stella Marschner +3 more
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VQ-oriented data hiding based on adjustable error compensation strategy
Connection Science, 2021 Nowadays, we greatly depend on Internet mass transmission, of all kinds of data, including critical information among them. Therefore, secure communication is an important topic.
Chin-Chen Chang +3 more
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Evaluation of articulatory codebooks [PDF]
The Journal of the Acoustical Society of America, 1987 The design of a codebook of articulatory shapes was recently reported [M. M. Sondhi, J. Schroeter, and J. N. Larar, J. Acoust. Soc. Am. Suppl. 1 81, S78 (1987)]. The codebook is used in an automatic articulatory analysis/synthesis scheme relying on good initial estimates of vocal tract cross-sectional areas to start up an optimization procedure [J ...
Man Mohan Sondhi +2 more
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SCMA with Low Complexity Symmetric Codebook Design for Visible Light Communication
, 2017 Sparse code multiple access (SCMA) is attracting significant research interests currently, which is considered as a promising multiple access technique for 5G systems.
Gao, Qian +3 more
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American Journal of Community Psychology, EarlyView.Abstract Intergenerational connectedness broadly encompasses relations among humans, lands, and all living and spiritual beings, and functions as an important part of Indigenous well‐being. Many public health campaigns and interventions aim to promote connectedness to support holistic wellness and reduce health inequities. Currently, however, there are
Victoria M. O'Keefe +13 more
wiley +1 more source