Results 31 to 40 of about 1,654 (206)
Sum-Rate Maximization of IRS-Aided SCMA System [PDF]
, 2023 We study an intelligent reflecting surface (IRS)-aided downlink sparse code multiple access (SCMA) system for massive connectivity in future machine -type communication networks.
Bohara, Vivek Ashok +7 more
core +1 more source
Particle swarm optimization of the spectral and energy efficiency of an SCMA-based heterogeneous cellular network [PDF]
, 2022 Background The effect of stochastic small base station (SBS) deployment on the energy efficiency (EE) and spectral efficiency (SE) of sparse code multiple access (SCMA)-based heterogeneous cellular networks (HCNs) is still mostly unknown.
Misra, Sanjay +7 more
core +2 more sources
A Novel K-Repetition Design for SCMA
CoRR, 2022 This work presents a novel K-Repetition based HARQ scheme for LDPC coded uplink SCMA by employing a network coding (NC) principle to encode different packets, where K-Repetition is an emerging technique (recommended in 3GPP Release 15) for enhanced reliability and reduced latency in future massive machine-type communication.
Ke Lai +5 more
openaire +2 more sources
Resource Allocation-Based PAPR Analysis in Uplink SCMA-OFDM Systems
IEEE Access, 2019 Sparse code multiple access (SCMA) is a non-orthogonal multiple access (NOMA) uplink solution that overloads resource elements (RE's) with more than one user.
Aditya S. Rajasekaran +4 more
doaj +1 more source
Interleaving based SCMA Codebook Design Using Arnold’s Cat Chaotic Map
Iraqi Journal of Information & Communication Technology, 2023 Non-orthogonal multiple access (NOMA) technology is a significant topic of the present 5G investigation. A possible NOMA approach is Sparse Code Multiple Access (SCMA), increasing next-generation communication's ability to handle multiple users. In SCMA,
Sura S. Mohamed, Hikmat N. Abdullah
doaj +1 more source
An Efficient Quantized Message Passing Receiver Design for SCMA Systems. [PDF]
Sensors (Basel)Sparse code multiple access (SCMA) has been considered as an efficient technique to provide both massive connectivity and high spectrum efficiency for future machine-type wireless networks.
Cheng H, Zhang M, Su R.
europepmc +2 more sources
Investigating the Pharmacokinetics and Efficacy of Intramammary Ceftiofur Hydrochloride in Prevention of Udder Inflammation in Non-Lactating Dairy Heifers. [PDF]
J Vet Pharmacol TherABSTRACT Mastitis is the most burdensome concern for the dairy cattle industry. Antimicrobials are often prophylactically administered to dairy cows at dry‐off to reduce the risk of intramammary infection during the dry period and subsequent lactation.
Miller RA +4 more
europepmc +2 more sources
2017 IEEE 86th Vehicular Technology Conference (VTC-Fall), 2017 In this paper, we design and compare multilevel polar coding (MLPC) and bit-interleaved polar coded modulation (BIPCM) for uplink sparse code multiple access (SCMA) systems that operate over fast and block fading channels. Both successive cancellation (SC) and successive cancellation list (SCL) decoding algorithms are considered.
Monirosharieh Vameghestahbanati +3 more
openaire +2 more sources
Irregular SCMA System for Enhanced Quality of Service
, 2022 International audienceAs a scheme of non-orthogonal multiple access in the code-domain, sparse code multiple access (SCMA) is one of the promoting candidate for the upcoming generations of wireless communication systems, and it has been actively ...
Raoof, Kosai +3 more
core +1 more source
MIMO Hybrid PD-SCMA NOMA Uplink Transceiver System
IEEE Access, 2022 The application of multiple-input multiple-output (MIMO) on power domain sparse code multiple access (PD-SCMA) systems would enhance their performance by increasing the multiplexing and diversity gains.
Simon Chege, Tom Walingo
doaj +1 more source