Results 61 to 70 of about 255,246 (314)
Linear-Codes-Based Lossless Joint Source-Channel Coding for Multiple-Access Channels
, 2009 A general lossless joint source-channel coding (JSCC) scheme based on linear codes and random interleavers for multiple-access channels (MACs) is presented and then analyzed in this paper.
Chen, Yan +2 more
core +1 more source
Arthritis Care &Research, Accepted Article.Objective We aimed to estimate the prevalence and cumulative incidence of hydroxychloroquine retinopathy (HCQ‐R) and its risk factors among long‐term HCQ users with rheumatic diseases through a systematic review and meta‐analysis of observational studies that used spectral‐domain OCT (SD‐OCT) for screening. Methods A systematic search of PubMed, Scopus,
Narsis Daftarian +4 more
wiley +1 more source
NEW COMPUTER GENERATED-SCMA CODEBOOK WITH MAXIMIZED EUCLIDIAN DISTANCE FOR 5G
Iraqi Journal of Information & Communication Technology, 2019 Sparse code multiple access (SCMA) is one of the Non-Orthogonal Multiple Access (NOMA) that attracts many researchers for its promising future uses in 5G systems. In this paper, a Computer Generated-Sparse Code Multiple Access (CG-SCMA) is proposed.
Yasmine M. Tabra, Bayan M. Sabbar
doaj +1 more source
Low-Density Spreading Codes for NOMA Systems and a Gaussian Separability-Based Design
IEEE Access, 2021 Improved low-density spreading (LDS) code designs based on the Gaussian separability criterion are conceived. We show that the bit error rate (BER) hinges not only on the minimum distance criterion, but also on the average Gaussian separability margin ...
Michel Kulhandjian +3 more
doaj +1 more source
, 2014 Multicarrier CDMA is a multiple access scheme in which modulated QAM symbols are spread over OFDMA tones by using a generally complex spreading sequence. Effectively, a QAM symbol is repeated over multiple tones.
Baligh, Hadi +3 more
core +1 more source
GeNN: a code generation framework for accelerated brain simulations [PDF]
, 2015 Large-scale numerical simulations of detailed brain circuit models are important for identifying hypotheses on brain functions and testing their consistency and plausibility. An ongoing challenge for simulating realistic models is, however, computational
AJ Cope +19 more
core +1 more source
Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials
Advanced Engineering Materials, EarlyView.Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai +2 more
wiley +1 more source
Research on Sparse Code Multiple Access Detection Technology in Satellite Communication Systems
天地一体化信息网络, 2020 SCMA detection algorithms in the satellite communication system was studied,and optimal allocation of codebook and the incomplete iterative MPA detection algorithm were combined to improve system performance while reducing system complexity.The ...
Yiting JIANG, Lidong ZHU
doaj +2 more sources
Pengaruh Pembobotan Desain Codebook terhadap Kinerja Sistem Sparse Code Multiple Access
Jurnal Nasional Teknik Elektro dan Teknologi InformasiSparse code multiple access (SCMA) dapat mendukung sistem saat terjadi overloading di sisi penerima sehingga meningkatkan efisiensi spektrum sistem dengan merancang mapping symbol dengan tepat. Kinerja SCMA ditentukan dengan codebook yang bersifat sparse
Shilvy Fatma Fitria Rachmawati Fatma +2 more
doaj +1 more source
IEEE Access, 2018 Sparse code multiple access (SCMA) is a promising candidate air interface of next-generation mobile networks. In this paper, we focus on a downlink SCMA system where a transmitter sends confidential messages to multiple users in the presence of external ...
Ke Lai +5 more
doaj +1 more source