Results 81 to 90 of about 1,022 (162)

Resource Allocation-Based PAPR Analysis in Uplink SCMA-OFDM Systems

open access: yesIEEE 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

Optimized Low Density Superposition Modulation for 5G Mobile Multimedia Wireless Networks

open access: yesIEEE Access, 2019
The explosive growth of mobile multimedia services and applications are increasing the demand of access ability for the recent 5G networks. Non-orthogonal multiple access (NOMA) techniques have been recently proposed for 5G to improve access efficiency ...
Kun Lu, Chengxin Jiang
doaj   +1 more source

Many Access for Small Packets Based on Precoding and Sparsity-aware Recovery [PDF]

open access: yes, 2016
Modern mobile terminals produce massive small data packets. For these short-length packets, it is inefficient to follow the current multiple access schemes to allocate transmission resources due to heavy signaling overhead.
Chen, Xiaohui   +4 more
core   +3 more sources

Strategy for Non-Orthogonal Multiple Access and Performance in 5G and 6G Networks. [PDF]

open access: yesSensors (Basel), 2023
Al-Dulaimi OMK   +3 more
europepmc   +1 more source

Message Passing Algorithm Receiver Design for RIS-Assisted Downlink MIMO-SCMA System

open access: yesApplied Sciences
Sparse code multiple access (SCMA) and reconfigurable intelligent surfaces (RISs) are two promising techniques in the forthcoming 6G communication networks to provide massive connectivity and enhance the spectral efficiency.
Dun Feng   +5 more
doaj   +1 more source

Design of Enhanced Protograph Codes and Codebooks for IDD-SCMA Systems

open access: yesIEEE Access
This paper investigates the design of protograph low-density parity-check (PLDPC) codes and Gray-labeling codebooks (CBs) for the sparse code multiple access systems with iterative detection and decoding receiver (IDD-SCMA).
Jiaqin Chen   +3 more
doaj   +1 more source

Federated Learning Driven Sparse Code Multiple Access in V2X Communications [PDF]

open access: yes
Sparse code multiple access (SCMA) is one of the competitive non-orthogonal multiple access techniques for the next generation multiple access systems.
Chae, Chan-Byoung   +5 more
core  

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