Results 21 to 30 of about 198 (123)
Asynchronous Flipped Grant-Free SCMA for Satellite-Based Internet of Things Communication Networks
Applied Sciences, 2019 Sparse code multiple access (SCMA) is a promising code domain non-orthogonal multiple-access scheme which is able to support massive connectivity and grant-free transmission in future satellite-based Internet of Things (IoT) communication networks ...
Pengxu Li, Gaofeng Cui, Weidong Wang
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A New Multiple Access Technique for 5G: Power Domain Sparse Code Multiple Access (PSMA)
IEEE Access, 2018 In this paper, a new approach for multiple access in the fifth generation (5G) of cellular networks called power domain sparse code multiple access (PSMA) is proposed. In PSMA, we adopt both the power domain and the code domain to transmit multiple users'
Mohammad Moltafet +4 more
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A novel receiver for uplink SCMA system
Dianxin kexue, 2017 Sparse code multiple access (SCMA) is a type of code domain non-orthogonal multiple access technology,which is regarded as a promising multiple access technology for 5G due to its excellent performance.The uplink SCMA system generally uses a message ...
Hongyang ZHANG +3 more
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The Journal of Engineering, 2019 New non-orthogonal multiple access technology is proposed with the development of 5G, which is expected to support higher spectrum efficiency and massive terminal access, it enables the communication system to achieve better bit error rate performance ...
Qing Wang +3 more
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Sub-Graph Based Joint Sparse Graph for Sparse Code Multiple Access Systems
IEEE Access, 2018 Sparse code multiple access (SCMA) is a promising air interface candidate technique for next-generation mobile networks, especially for massive machine-type communications. In this paper, we design a low-density parity-check (LDPC) coded SCMA detector by
Ke Lai +5 more
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IEEE Access, 2017 Sparse code multiple access (SCMA), as a promising non-orthogonal multiple access scheme for the 5G system, aims to achieve massive connections and grant-free transmission in the radio access scenario.
Guangjin Chen +3 more
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IEEE Access, 2018 SCMA and polar coding are possible candidates for 5G systems. In this paper, we firstly propose the joint iterative detection and decoding (JIDD) receiver for the uplink polar coded sparse code multiple access (PC-SCMA) system.
Zhipeng Pan +4 more
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Transceiver design and performance analysis for uplink SCMA based on CP-free OFDM
Dianxin kexue, 2021 A typical sparse code multiple access (SCMA) system utilizes orthogonal frequency division multiplexing (OFDM) technology with cyclic prefix (CP) to combat multipath fading in wireless channels.Therefore, its capacity is reduced by the CP-insertion.To ...
Li ZHOU, Xiqing LIU
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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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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
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