Enabling High Order SCMA Systems in Downlink Scenarios With a Serial Coding Scheme
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Access"
DOI: 10.1109/access.2018.2842233
Abstract: In the future fifth generation communication systems, sparse code multiple access (SCMA) shows strong competitiveness as a novel non-orthogonal multiple access (NOMA) technique. Attributing to multi-dimensional codebooks, the SCMA can obtain shaping gain and provide… read more here.
Keywords: downlink scenarios; order; scma; order scma ... See more keywords
Grant-Free Uplink Transmission With Multi-Codebook-Based Sparse Code Multiple Access (MC-SCMA)
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Access"
DOI: 10.1109/access.2019.2954492
Abstract: In sparse code multiple access (SCMA)-based grant-free (GF) access, both user’s channel and the selected SCMA codebook (CB) are considered as a transmission signature for multi-user detection (MUD). In conventional SCMA-based grant-free (GF) access where… read more here.
Keywords: access; multiple access; scma; grant free ... See more keywords
Resource Allocation for SCMA-Based IoT Systems With Layered Multicast
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Access"
DOI: 10.1109/access.2021.3122449
Abstract: Due to the lack of spectrum resources, effective methods must be proposed to meet the needs of the Internet of Things (IoT) massive connectivity. In this paper, two effective techniques to improve spectral efficiency, namely,… read more here.
Keywords: based iot; resource allocation; scma; scma based ... See more keywords
MIMO Hybrid PD-SCMA NOMA Uplink Transceiver System
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3200372
Abstract: 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. However, this is at a cost of increased detection… read more here.
Keywords: system; scma; hybrid scma; mimo hybrid ... 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
Achieving Ultrareliable and Low-Latency Communications in IoT by FD-SCMA
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Internet of Things Journal"
DOI: 10.1109/jiot.2019.2948281
Abstract: To enable ultrareliable and low-latency communications (URLLCs) in the Internet of Things (IoT), a sparse-code multiple-access (SCMA)-enhanced full-duplex (FD) scheme (FD-SCMA) is proposed in this article. FD-SCMA can support short-packet transmissions of several SCMA users… read more here.
Keywords: ultrareliable low; latency communications; low latency; scma ... See more keywords
A Comprehensive Technique to Design SCMA Codebooks
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Communications Letters"
DOI: 10.1109/lcomm.2022.3177542
Abstract: Sparse code multiple access (SCMA) is a potential candidate for improving spectral efficiency through overloading over resources. This letter proposes a comprehensive approach to achieve near-optimal SCMA codebooks designs for 150% and 200% overloading factors… read more here.
Keywords: scma; comprehensive technique; scma codebooks; technique design ... See more keywords
Design of Uplink SCMA Codebooks Using Evolution Strategies
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Communications Letters"
DOI: 10.1109/lcomm.2024.3390602
Abstract: Sparse Code Multiple Access (SCMA) is a promising non-orthogonal multiple access (NOMA) technique in future wireless communications. In this letter, a novel uplink codebook optimization method for SCMA using evolution strategies is proposed. Unlike traditional… read more here.
Keywords: scma; design uplink; evolution strategies; using evolution ... See more keywords
SCMA: A Scattering Center Model Attack on CNN-SAR Target Recognition
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2023.3253189
Abstract: Convolutional neural networks (CNNs) have been widely used in synthetic aperture radar (SAR) target recognition, which can extract feature automatically. However, due to its own structural flaws, CNNs are easy to be fooled by adversarial… read more here.
Keywords: scma; center model; attack; scattering center ... See more keywords
A Multistage Method for SCMA Codebook Design Based on MDS Codes
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Wireless Communications Letters"
DOI: 10.1109/lwc.2019.2925801
Abstract: Sparse code multiple access (SCMA) has been recently proposed for the future generation of wireless communication standards. SCMA system design involves specifying several parameters. To simplify the procedure, most works consider a multistage design approach.… read more here.
Keywords: scma; codebook design; scma codebook; mds codes ... See more keywords
On Performance Comparison of Multi-Antenna HD-NOMA, SCMA, and PD-NOMA Schemes
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Wireless Communications Letters"
DOI: 10.1109/lwc.2020.3041601
Abstract: In this letter, we study the uplink channel throughput performance of a proposed novel multiple-antenna hybrid-domain non-orthogonal multiple access (MA-HD-NOMA) scheme. This scheme combines the conventional sparse code multiple access (SCMA) and power-domain NOMA (PD-NOMA)… read more here.
Keywords: performance; scma; noma; multi antenna ... See more keywords