Grant-Free Uplink Transmission With Multi-Codebook-Based Sparse Code Multiple Access (MC-SCMA) [PDF]
IEEE Access, 2019 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
Ameha Tsegaye Abebe, Chung G. Kang
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Investigating High Performance Implementations of Sparse Code Multiple Access (SCMA) Codebook Design
JISR on Computing, 2022 - The number of mobile devices, IoT devices, and their applications is increasing day by day in recent years and further going to increase in coming years.
Halar Mustafa
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Sparse Code Multiple Access (SCMA) Technique [PDF]
, 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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A Tutorial on Decoding Techniques of Sparse Code Multiple Access [PDF]
IEEE Access, 2022 Sparse Code Multiple Access (SCMA) is a disruptive code-domain non-orthogonal multiple access (NOMA) scheme to enable future massive machine-type communication networks.
Saumya Chaturvedi +4 more
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Windowed Joint Detection and Decoding with IR-HARQ for Asynchronous SCMA Systems [PDF]
Entropy, 2023 To improve the decoding performance of asynchronous sparse code multiple access (SCMA) systems over additive white Gaussian noise (AWGN) channels, this paper proposes a novel windowed joint detection and decoding algorithm for a rate-compatible (RC ...
Mengsheng Guan, Min Zhu, Baoming Bai
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Joint Iterative Decoding Design of Cooperative Downlink SCMA Systems [PDF]
EntropySparse code multiple access (SCMA) has been a competitive multiple access candidate for future communication networks due to its superiority in spectrum efficiency and providing massive connectivity.
Hao Cheng, Min Zhang, Ruoyu Su
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Improving Polar-Coded SCMA System by Information Coupling and Parity Check [PDF]
Sensors, 2020 In this paper, the uplink information-coupled polar-coded sparse code multiple access (PC-SCMA) system is proposed. For this system, we first design the encoding method of systematic joint parity check and CRC-aided (PCCA) polar code.
Xi Wu, Yafeng Wang
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Sub-Graph Based Joint Sparse Graph for Sparse Code Multiple Access Systems [PDF]
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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Design and Optimization of Joint Iterative Detection and Decoding Receiver for Uplink Polar Coded SCMA System [PDF]
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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Impact of Factor Graph on Average Sum Rate for Uplink Sparse Code Multiple Access Systems [PDF]
IEEE Access, 2016 In this paper, we first study the average sum rate of sparse code multiple access (SCMA) systems, where a general scenario is considered under the assumption that the distances between the mobile users and the base station are not necessarily identical ...
Zheng Yang +5 more
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