Results 11 to 20 of about 51,024 (274)
An Error Rate Comparison of Power Domain Non-Orthogonal Multiple Access and Sparse Code Multiple Access [PDF]
IEEE Open Journal of the Communications Society, 2021 Non-orthogonal Multiple Access (NOMA) has been envisioned as one of the key enabling techniques to fulfill the requirements of future wireless networks. The primary benefit of NOMA is higher spectrum efficiency compared to Orthogonal Multiple Access (OMA)
Qu Luo +6 more
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Spatial Modulated Multicarrier Sparse Code-Division Multiple Access [PDF]
IEEE Transactions on Wireless Communications, 2020 This paper proposes a novel spatial-modulated multicarrier sparse code-division multiple access (SM/MC-SCDMA) system for achieving massive connectivity in device-centric wireless communications. In our SM/MC-SCDMA system, the advantages of both MC signalling and SM are amalgamated to conceive a low-complexity transceiver.
Yusha Liu +4 more
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Sparse Code Multiple Access (SCMA) Technique
, 2023 Next-generation wireless networks require higher spectral efficiency and lower latency to meet the demands of various upcoming applications. Recently, non-orthogonal multiple access (NOMA) schemes are introduced in the literature for 5G and beyond. Various forms of NOMA are considered like power domain, code domain, pattern division multiple access ...
Sharma, Sanjeev, Deka, Kuntal
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Delayed Bit Interleaved Coded Sparse Code Multiple Access
IEEE Transactions on Vehicular Technology, 2020 Targeting to provide reliable short-packet communications with tens of bits in machine-type networks, we investigate a novel sparse code multiple access (SCMA) scheme called delayed bit-interleaved coded SCMA (DBIC-SCMA). At the transmitter side, a delay module is introduced between each channel encoder and SCMA mapper such that data bits from ...
Zeina Mheich +3 more
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Spatial Modulation Aided Sparse Code-Division Multiple Access [PDF]
IEEE Transactions on Wireless Communications, 2018 In order to support high-user-load multiple-access (MA), we propose a non-orthogonal MA scheme based on a beneficial amalgam of spatial modulation (SM) and sparse code-division multiple-access (SCDMA), which is termed the SM-SCDMA. Hence, SM-SCDMA inherits both the merits of SM with single radio-frequency MIMO transceiver implementation and the ...
Yusha Liu, Lie-Liang Yang, Lajos Hanzo
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Quantum Search-Aided Multi-User Detection for Sparse Code Multiple Access
IEEE Access, 2019 With the explosive proliferation of mobile devices, the scarcity of communication resources has emerged as a critical issue in the next generation (NG) communication systems.
Wenjing Ye +4 more
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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
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Sparse Code Multiple Access-Based Edge Computing for IoT Systems
IEEE Internet of Things Journal, 2019 In this paper, a sparse code multiple access (SCMA)-based edge computing scheme is proposed for Internet-of-Things (IoT) systems. The aim of implementing SCMA, which is a nonorthogonal multiple access resource allocation technique, is to improve network connectivity and maximize data rate provision.
Alnoman, Ali +3 more
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Secure Transmission With Interleaver for Uplink Sparse Code Multiple Access System
IEEE Wireless Communications Letters, 2019 Sparse code multiple access (SCMA) is a promising air interface candidate technique for next generation mobile networks. By introducing the Tent map in the Chaos theory, we propose a novel physical layer transmission scheme with codeword level interleaving at the transmitter in this letter, which is termed as interleaver-based SCMA (I-SCMA ...
Ke Lai +5 more
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PhotonicsThe capacity performance of visible light communication (VLC) systems can be improved by using sparse code multiple access (SCMA). Since SCMA is a codebook-based multiple access scheme, the design of the codebook is crucial.
Jingxuan Dong +3 more
doaj +2 more sources