Results 31 to 40 of about 475 (165)
Low-Complexity Codebook Design for SCMA-Based Visible Light Communication
IEEE Open Journal of the Communications Society, 2022 Sparse code multiple access (SCMA), as a code-domain non-orthogonal multiple access (NOMA) scheme, has received considerable research attention for enabling massive connectivity in future wireless communication systems.
Saumya Chaturvedi +4 more
doaj +1 more source
Joint Task Partition and Resource Allocation for Multiuser Cooperative Mobile Edge Computing
Wireless Communications and Mobile Computing, Volume 2022, Issue 1, 2022., 2022 Exploiting the idle computation resources distributed at wireless devices (WDs) can enhance the mobile edge computing (MEC) computation performance. This paper studies a multiuser cooperative computing system consisting of one local user and multiple helpers, in which the user solicits multiple nearby WDs acting as helpers for cooperative computing. We
Gang Xie +3 more
wiley +1 more source
Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022 The advent of the 5G mobile network has brought a lot of benefits. However, it prompted new challenges on the 5G network cybersecurity defense system, resource management, energy, cache, and mobile network, therefore making the existing approaches obsolete to tackle the new challenges. As a result of that, research studies were conducted to investigate
Mubarak S. Almutairi, Akif Akgul
wiley +1 more source
Equalization Network‐Aided SCMA Codec Scheme with Deep Learning
Wireless Communications and Mobile Computing, Volume 2022, Issue 1, 2022., 2022 With the rapid development of the Internet of Things, sparse code multiple access (SCMA), which aims to promote spectrum efficiency and support massive connectivity in the future beyond fifth‐ and sixth‐generation massive machine‐type communication (mMTC) scenarios, has been widely investigated.
Fang Jiang +6 more
wiley +1 more source
Codeword Position Index based Sparse Code Multiple Access System [PDF]
, 2018 In this letter, a novel variant of sparse code multiple access (SCMA), called codeword position index based SCMA (CPI-SCMA), is proposed. In this scheme, the information is transmitted not only by the codewords in a M-point SCMA codebook, but also by the
L Wen (7696007) +5 more
core +4 more sources
Low‐complexity sphere decoding for MIMO‐SCMA systems
IET Communications, Volume 15, Issue 4, Page 537-545, March 2021., 2021 Abstract Multiple‐input multiple‐output‐sparse code multiple access, a non‐trivial integration of sparse code multiple access and multiple‐input multiple‐output techniques, is able to achieve high spectrum efficiency and massive user connections. However, this integration also increases the complexity of signal detection.
Zhipeng Pan +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
College Physical Education Teaching Aided by Virtual Reality Technology
Mobile Information Systems, Volume 2021, Issue 1, 2021., 2021 In recent years, College PE has received more and more attention. Traditional PE and teaching cannot meet the demand of students in today’s society and cannot attract students’ interest in sports. Under the current situation that the country actively promotes information science education, there is an urgent need to innovate PE teaching methods. VRT is
Junniao Meng, Sang-Bing Tsai
wiley +1 more source
Optimal Power Allocation for Cooperative Pattern Division Multiple Access Systems
Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021 This study focuses on the power allocation (PA) problem in code division multiple access (PDMA) networks with amplify‐and‐forward (AF) relays. We provide two wireless communication technical performance indexes, which are system throughput and outage probability.
Xiurong Zhang +3 more
wiley +1 more source
Downlink Multiple Input Multiple Output Mixed Sparse Code Multiple Access for 5G System
IEEE Access, 2018 For downlink multiple-input multiple-output-sparse code multiple access (MIMO-SCMA) system, the convergence reliability of the detected codeword in each decision process is unsatisfactory at the message passing algorithm receiver. To address this problem,
Cheng Yan, Ningbo Zhang, Guixia Kang
doaj +1 more source