Results 11 to 20 of about 85,381 (188)
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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Design of Power-Imbalanced SCMA Codebook [PDF]
IEEE Transactions on Vehicular Technology, 2022 Sparse code multiple access (SCMA) is a promising multiuser communication technique for the enabling of future massive machine-type networks. Unlike existing codebook design schemes assuming uniform power allocation, we present a novel class of SCMA codebooks which display power imbalance among different users for downlink transmission.
Xudong Li +5 more
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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
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SCMA High-Dimensional Codebook Design Based on VBR-GAM
天地一体化信息网络, 2023 At the physical layer, sparse code multiple access (SCMA) technology is used to solve the problem of massive user access.In the current research on SCMA, in addition to the research on SCMA multi-user detection technology, more attention will be paid to ...
Xu DENG, Ke CHU, Lidong ZHU
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Variable dimension VQ encoding and codebook design [PDF]
IEEE Transactions on Communications, 1997 A variable dimension vector quantizer (VDVQ) has codewords of unequal dimensions. Here, a trellis-based sequential optimal VDVQ encoding algorithm is proposed. Also, a VDVQ codebook design algorithm based on splitting a node with equal or reduced dimensions is proposed that does not require any codebook parameter to be prespecified unlike known schemes.
Makur, Anamitra, Subbalakshmi, KP
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Investigating High Performance Implementations of Sparse Code Multiple Access (SCMA) Codebook Design
JISR on Computing, 2022 - The number of mobile devices, IoT devices, and their applications is increasing day by day in recent years and further going to increase in coming years.
Halar Mustafa
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Fast Codebook Generation Using Pattern Based Masking Algorithm for Image Compression
IEEE Access, 2021 Vector Quantization (VQ) is a classical block coding technique used for image compression which achieves high compression using simple encoding and decoding process.
Muhammad Bilal +2 more
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A Review of Codebook Models in Patch-Based Visual Object Recognition [PDF]
, 2011 The codebook model-based approach, while ignoring any structural aspect in vision, nonetheless provides state-of-the-art performances on current datasets.
Niranjan, Mahesan +1 more
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Convolutional neural network and clustering-based codebook design method for massive MIMO systems
EURASIP Journal on Advances in Signal Processing, 2022 In this paper, we propose a convolutional neural network (CNN) and clustering-based codebook design method. Specifically, we train two different CNNs, i.e., CNN1 and CNN2, to compress the channel state information (CSI) matrices into the channel vectors ...
Jing Xing, Die Hu
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Deep Clustering-Based Codebook Design for Massive MIMO Systems
IEEE Access, 2019 Deep learning (DL) can effectively handle explosive data and solve the complicated non-convex problems. Recently, it is used to reduce the overhead of channel state information (CSI) feedback and improve the performance of the limited feedback massive ...
Jing Jiang +4 more
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