A Novel Multitask Learning Empowered Codebook Design for Downlink SCMA Networks [PDF]
IEEE Wireless Communications Letters, 2022 Sparse code multiple access (SCMA) is a promising code-domain non-orthogonal multiple access (NOMA) scheme for the enabling of massive machine-type communication.
Qu Luo +4 more
semanticscholar +1 more source
Vowel Phoneme Segmentation for Speaker Identification Using an ANN-Based Framework
Journal of Intelligent Systems, 2013 Vowel phonemes are a part of any acoustic speech signal. Vowel sounds occur in speech more frequently and with higher energy. Therefore, vowel phoneme can be used to extract different amounts of speaker discriminative information in situations where ...
Sarma Mousmita, Sarma Kandarpa Kumar
doaj +1 more source
Extended Codebook with Multispectral Sequences for Background Subtraction
Sensors, 2019 The Codebook model is one of the popular real-time models for background subtraction. In this paper, we first extend it from traditional Red-Green-Blue (RGB) color model to multispectral sequences.
Rongrong Liu +2 more
doaj +1 more source
PCA-Based Fast Search Method Using PCA-LBG-Based VQ Codebook for Codebook Search
IEEE Access, 2016 A fast search method based on principle component analysis (PCA) is proposed to search codewords using vector quantization (VQ) codebooks obtained by PCA with Linde-Buzo-Gray (LBG) algorithms.
Po-Yuan Yang +2 more
doaj +1 more source
Downlink SCMA Codebook Design With Low Error Rate by Maximizing Minimum Euclidean Distance of Superimposed Codewords [PDF]
IEEE Transactions on Vehicular Technology, 2021 Sparse code multiple access (SCMA), as a codebook-based non-orthogonal multiple access (NOMA) technique, has received research attention in recent years. The codebook design problem for SCMA has also been studied to some extent since codebook choices are
Chinwei Huang +3 more
semanticscholar +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
SCMA Codebook Design Based on Uniquely Decomposable Constellation Groups [PDF]
IEEE Transactions on Wireless Communications, 2021 Sparse code multiple access (SCMA), which helps improve spectrum efficiency (SE) and enhance connectivity, has been proposed as a non-orthogonal multiple access (NOMA) scheme for 5G systems.
Xuewan Zhang +5 more
semanticscholar +1 more source
Improvements on stochastic vector quantization of images [PDF]
, 1993 A novel nonadaptive fixed-rate vector quantizer encoding scheme is presented, and preliminary results are shown. The design of the codebook has been based on a stochastic approach in order to match a previously defined model for the image to be encoded ...
Torres Urgell, Lluís
core +1 more source
ITM Web of Conferences, 2018 Codebook design is a key point in beam-forming which is necessary for millimeter Wave (mmWave) communications to compensate its huge path loss. In our study, we demonstrate the benefits of the number of antenna elements for beamforming; we focus on the ...
Abdo Adam Mohamed Ahmed +3 more
doaj +1 more source
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
doaj +1 more source