Reversible data hiding for VQ indices using hierarchical state codebook mapping
Sign Up to like & getrecommendations! Published in 2017 at "Multimedia Tools and Applications"
DOI: 10.1007/s11042-017-5490-3
Abstract: In this paper, we present an approach to efficiently hide sensitive data in vector quantization (VQ) indices and reversibly extract sensitive data from encrypted code stream. The approach uses two patterns to compress VQ indices.… read more here.
Keywords: codebook mapping; hierarchical state; index; state codebook ... See more keywords
Limited Feedback Strategy For MU-MIMO Systems Under Spatially Correlated Channels
Sign Up to like & getrecommendations! Published in 2017 at "Wireless Personal Communications"
DOI: 10.1007/s11277-017-4386-x
Abstract: AbstractThis paper studies limited feedback transmission strategy for downlink multiuser multiple-input multiple-output (MU-MIMO) systems under spatially correlated channels. To exploit the channel statistics for improving the performance of precoding at the base station (BS) with… read more here.
Keywords: feedback strategy; correlated channels; limited feedback; strategy ... See more keywords
An Optimal Codebook for Content-Based Image Retrieval in JPEG Compressed Domain
Sign Up to like & getrecommendations! Published in 2019 at "Arabian Journal for Science and Engineering"
DOI: 10.1007/s13369-019-03880-0
Abstract: Images in JPEG compressed domain have a widespread use and computationally efficient retrieval of those images is of prime concern. In this paper, a content-based image retrieval system in JPEG compressed domain is presented, which… read more here.
Keywords: retrieval; jpeg compressed; compressed domain; image retrieval ... See more keywords
Image compression based on vector quantization using cuckoo search optimization technique
Sign Up to like & getrecommendations! Published in 2018 at "Ain Shams Engineering Journal"
DOI: 10.1016/j.asej.2016.09.009
Abstract: Abstract Most common vector quantization (VQ) is Linde Buzo Gray (LBG), that designs a local optimal codebook for image compression. Recently firefly algorithm (FA), particle swarm optimization (PSO) and Honey bee mating optimization (HBMO) were… read more here.
Keywords: search; optimization; cuckoo search; vector quantization ... See more keywords
Joint uplink SCMA codebook design for correlated fading channels
Sign Up to like & getrecommendations! Published in 2020 at "Physical Communication"
DOI: 10.1016/j.phycom.2020.101041
Abstract: Abstract Sparse Code Multiple Access (SCMA) is currently one of the most intensively investigated Multicarrier Non-Orthogonal Multiple Access (NOMA) technology for 5G wireless communication system. Careful design of SCMA codebook is one of the major… read more here.
Keywords: uplink scma; codebook design; scma codebook; fading channels ... See more keywords
Adaptive Codebook Design and Assignment for Energy Saving in SCMA Networks
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Access"
DOI: 10.1109/access.2017.2764120
Abstract: Sparse code multiple access (SCMA) has been proposed as a candidate air interface (AI) technique for 5G wireless networks. However, the existing resource management schemes with predesigned SCMA codebooks cannot fully exploit user diversities in… read more here.
Keywords: codebook design; codebook; design assignment; problem ... See more keywords
ACTL: Adaptive Codebook Transfer Learning for Cross-Domain Recommendation
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Access"
DOI: 10.1109/access.2019.2896881
Abstract: Collaborative filtering usually suffers from limited performance due to the data sparsity problem. Transfer learning presents an unprecedented opportunity to alleviate this issue through transfer useful knowledge from an auxiliary domain to a target domain.… read more here.
Keywords: cross domain; domain recommendation; transfer learning; transfer ... See more keywords
An Efficient SCMA Codebook Design Based on Lattice Theory for Information-Centric IoT
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Access"
DOI: 10.1109/access.2019.2938637
Abstract: Different from traditional communication systems, information-centric Internet of things (IC-IoT) as a novel smart paradigm needs to guarantee end-to-end connectivity for rapidly growing smart devices. How to meet the demands of massive connection has become… read more here.
Keywords: information centric; lattice; mother constellation; constellation ... See more keywords
A Novel Scheme for the Construction of the SCMA Codebook
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3207898
Abstract: As a code-domain non-orthogonal multiple access technique, sparse code multiple access (SCMA) is considered as a promising technique for future wireless Internet of Things (IoT) networks. The minimum Euclidean distance (MED) and minimum product distance… read more here.
Keywords: scma; codebook; novel scheme; performance ... See more keywords
Limited Feedback Design Based on Kronecker Product Codebook for Massive MIMO Systems
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Access"
DOI: 10.1109/access.2023.3251726
Abstract: To realize massive multiple-input multiple-output (MIMO) systems, the uniform planar array (UPA) structure has been adopted to deploy a large number of antennas in a limited area of a radio unit at a base station.… read more here.
Keywords: codebook; domain; mimo systems; kronecker product ... See more keywords
On Optimizing Multicarrier-Low-Density Codebook for GMAC With Finite Alphabet Inputs
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Communications Letters"
DOI: 10.1109/lcomm.2017.2701801
Abstract: Multicarrier-low-density spreading multiple access (MC-LDSMA) is a novel non-orthogonal multiple access scheme, which exploits a multidimensional codebook based on the sparse spreading technique. In this letter, instead of assuming the ideal Gaussian inputs, we contribute… read more here.
Keywords: alphabet inputs; multicarrier low; low density; codebook ... See more keywords