Results 1 to 10 of about 887 (159)
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 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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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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SCMA CODEBOOK DESIGN BASED ON GRADIENT ASCENT ALGORITHM [PDF]
Proceedings on Engineering Sciences, 2022 Sparse Code Multiple Access (SCMA) is a non-orthogonal multiple access scheme, which improves spectrum efficiency. SCMA codebooks determine the bit error rate (BER) performance.
Islam Kanatbekuli +4 more
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A Simplified Sphere Decoding-Based Detector for Generalized SCMA Codebooks
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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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. Low density signature (LDS) is a version of CDMA with low density spreading sequences allowing us to take advantage of a near optimal message
Taherzadeh, Mahmoud +3 more
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Research on SCMA-VLC Receiver based on Convolutional Neural Network
Guangtongxin yanjiu, 2022 The signal distortion caused by the limited bandwidth of Light Emitting Diode (LED) and its nonlinear electro-optic conversion severely limit the transmission performance of Visible Light Communication (VLC).
Shao-qin ZOU, Qi-wei LAI, Bang-jiang LIN
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Research on resource allocation algorithm in D2D networks based on alliance game
Dianzi Jishu Yingyong, 2022 The rapid increase in the number of users in wireless networks has brought huge challenges to the existing network architecture, and how to increase the system capacity effectively is an urgent problem to be solved.
Chen Yujie, Ma Caihong
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Low‐complexity detection for uplink massive MIMO SCMA systems
IET Communications, 2021 This paper presents a sparse code multiple access (SCMA) system with massive antennas at the base station. This system is referred to as M‐SCMA system. A spectrally‐efficient and massive access next‐generation wireless network is realized through massive
Sanjeev Sharma +2 more
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IEEE Access, 2020 As the fifth-generation (5G) wireless networks' key technology, the joint design of SCMA and polar code is concerned by the future communication system. In this paper, a CRC aided joint iterative detection and successive cancellation list (SCL) decoding (
Xi Wu, Yafeng Wang, Chuanfeng Li
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