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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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A Simplified Sphere Decoding-Based Detector for Generalized SCMA Codebooks [PDF]
IEEE Access, 2022 Sparse code multiple access (SCMA) is one of the promising schemes to meet high connectivity and spectral efficiency in the future wireless networks. The iterative detectors, for example message passing algorithm (MPA), can provide near optimal multiuser
Xiaotian Fu +3 more
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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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2014 IEEE 80th Vehicular Technology Conference (VTC2014-Fall), 2014 Multicarrier CDMA is a multiple access scheme in which modulated QAM symbols are spread over OFDMA tones by using a generally complex spreading sequence. Effectively, a QAM symbol is repeated over multiple tones.
Baligh, Hadi +3 more
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An Efficient Quantized Message Passing Receiver Design for SCMA Systems. [PDF]
Sensors (Basel)Sparse code multiple access (SCMA) has been considered as an efficient technique to provide both massive connectivity and high spectrum efficiency for future machine-type wireless networks.
Cheng H, Zhang M, Su R.
europepmc +2 more sources
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 ...
Sanjeev Sharma, Kuntal Deka
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A Novel Image-Classification-Based Decoding Strategy for Downlink Sparse Code Multiple Access Systems [PDF]
Entropy, 2023 The introduction of sparse code multiple access (SCMA) is driven by the high expectations for future cellular systems. In traditional SCMA receivers, the message passing algorithm (MPA) is commonly employed for received-signal decoding. However, the high
Zikang Chen +4 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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Enabling Sphere Decoding for SCMA [PDF]
IEEE Communications Letters, 2017 In this paper, we propose a reduced-complexity optimal modified sphere decoding (MSD) detection scheme for SCMA. As SCMA systems are characterized by a number of resource elements (REs) that are less than the number of the supported users, the channel matrix is rank-deficient, and sphere decoding (SD) cannot be directly applied.
Monirosharieh Vameghestahbanati +4 more
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A Low‐Complexity and High‐Decoding Performance Scheme for the MIMO‐SCMA System [PDF]
IEEE Communications Letters, 2021 Multiple-input multiple-output (MIMO) and sparse code multiple access (SCMA) are two effective techniques supporting high spectral efficiency and massive connectivity, respectively. Although the combination of these two techniques, namely MIMO-SCMA, can further improve the spectral efficiency, it deteriorates the error performance and greatly increases
Wenping Ge +4 more
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