Results 1 to 10 of about 38,907 (118)
SCMA CODEBOOK DESIGN BASED ON GRADIENT ASCENT ALGORITHM [PDF]
Proceedings on Engineering Sciences, 2022 Sparse Code Multiple Access (SCMA) is a non-orthogonal multiple access scheme, which improves spectrum efficiency. SCMA codebooks determine the bit error rate (BER) performance.
Islam Kanatbekuli +4 more
doaj +1 more source
Mathematics, 2023 For constructing the best local codebook for image compression, there are many Vector Quantization (VQ) procedures, but the simplest VQ procedure is the Linde–Buzo–Gray (LBG) procedure.
Aditya Bakshi +7 more
doaj +1 more source
BOVW FOR CLASSIFICATION IN GEOMETRICS SHAPES [PDF]
Applied Computer Science, 2018 The classification of forms is a process used in various areas, to perform a classification based on the manipulation of shape contours it is necessary to extract certain common characteristics, it is proposed to use the bag of visual words model, this ...
Baldemar ZURITA +3 more
doaj +1 more source
Ecology and Society, 2021 Manual content analysis provides a systematic and reliable method to analyze patterns within a narrative text, but for larger datasets, where human coding is not feasible, automated content analysis methods present enticing and time-efficient solutions ...
Aviv Suan +2 more
doaj +1 more source
IEEE Access, 2021 5G new radio (NR) provides features such as enhanced mobile broadband (eMBB) services and massive machine-type communications (mMTC). Multiple-input multiple-output (MIMO) transmission is an essential technique to enable these features, using antenna ...
Wonjae Ryoo, Wonjin Sung
doaj +1 more source
Differential Data-Aided Beam Training for RIS-Empowered Multi-Antenna Communications
IEEE Access, 2022 The Reconfigurable Intelligent Surface (RIS) constitutes one of the prominent technologies for the next generation of wireless communications. It is envisioned to enhance the signal coverage in cases when the direct link of the communication is weak ...
Kun Chen-Hu +2 more
doaj +1 more source
Speaker Sound Coding Using Vector Quantization Technique (Vq) [PDF]
Engineering and Technology Journal, 2014 The key objective of this research is to compress the speech sound or in another meaning coding speaker sound with a small matrix called code book represent the speaker sound information this is done by using Vector Quantization method (VQ).The sound ...
Oday Kamil Hamid
doaj +1 more source
CG-SCMA Codebook Design Based on Maximized Euclidian Distance
Journal of Telecommunications and Information Technology, 2023 Sparse code multiple access (SCMA) is a multi-dimensional codebook based on a class of non-orthogonal multiple access (NOMA) technologies enabling the delivery of non-orthogonal resource elements to numerous users in 5G wireless communications without ...
Sura S. Mohamed, Hikmat N. Abdullah
doaj +1 more source
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
doaj +1 more source
Utilization of Beam Signatures Supporting High User Mobility With Extremely Low Feedback Overhead
IEEE Access, 2022 Accurate beamforming under the constraint of limited-feedback for the channel state information (CSI) has always been a challenging task, despite its huge impact on the quality of multiple-input multiple-output (MIMO) transmission.
Sangchun Park, Wonjin Sung
doaj +1 more source