Reconfigurable Intelligent Surface-Assisted Uplink Sparse Code Multiple Access

被引：23
作者：
Al-Nahhal, Ibrahim [1 ]
Dobre, Octavia A. [1 ]
Basar, Ertugrul [2 ]
机构：
[1] Mem Univ Newfoundland, Fac Engn & Appl Sci, St John, NF A1C 5S7, Canada
[2] Koc Univ, Dept Elect & Elect Engn, CoreLab, TR-34450 Istanbul, Turkey
来源：
IEEE COMMUNICATIONS LETTERS | 2021年 / 25卷 / 06期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Complexity theory; Uplink; Bit error rate; Maximum likelihood decoding; Iterative decoding; Receivers; NOMA; Sparse code multiple access (SCMA); reconfigurable intelligent surface (RIS); message passing algorithm (MPA); low-complexity decoder; NOMA;
D O I：
10.1109/LCOMM.2021.3058142
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
Reconfigurable intelligent surface-empowered communication (RIS) and sparse code multiple access (SCMA) are promising candidates for future generations of wireless networks. The former enhances the transmission environments, whereas the latter provides a high spectral efficiency transmission. This letter proposes, for the first time, a low-cost design for RIS-assisted uplink SCMA (SCMA-RIS) scheme to improve the conventional SCMA spectrum efficiency. The message passing algorithm (MPA) is utilized and modified to decode the SCMA-RIS transmitted signals. Moreover, a low-complexity decoder for the SCMA-RIS scheme is proposed to significantly reduce the MPA decoding complexity and improve the bit error rate performance of the conventional SCMA. Monte Carlo simulations and complexity analysis are presented, which support the findings.
引用
收藏
页码：2058 / 2062
页数：5
相关论文
共 14 条
[1]   Low-Cost Uplink Sparse Code Multiple Access for Spatial Modulation [J].
Al-Nahhal, Ibrahim ;
Dobre, Octavia A. ;
Basar, Ertugrul ;
Ikki, Salama .
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2019, 68 (09) :9313-9317
[2]   Wireless Communications Through Reconfigurable Intelligent Surfaces [J].
Basar, Ertugrul ;
Di Renzo, Marco ;
De Rosny, Julien ;
Debbah, Merouane ;
Alouini, Mohamed-Slim ;
Zhang, Rui .
IEEE ACCESS, 2019, 7 :116753-116773
[3]  
Basar E, 2019, EUR CONF NETW COMMUN, P112, DOI [10.1109/EuCNC.2019.8801961, 10.1109/eucnc.2019.8801961]
[4]   A Survey on Non-Orthogonal Multiple Access for 5G Networks: Research Challenges and Future Trends [J].
Ding, Zhiguo ;
Lei, Xianfu ;
Karagiannidis, George K. ;
Schober, Robert ;
Yuan, Jinhong ;
Bhargava, Vijay K. .
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2017, 35 (10) :2181-2195
[5]   Reconfigurable Intelligent Surface Assisted Coordinated Multipoint in Downlink NOMA Networks [J].
Elhattab, Mohamed ;
Arfaoui, Mohamed-Amine ;
Assi, Chadi ;
Ghrayeb, Ali .
IEEE COMMUNICATIONS LETTERS, 2021, 25 (02) :632-636
[6]   Reconfigurable Intelligent Surfaces for Wireless Communications: Principles, Challenges, and Opportunities [J].
ElMossallamy, Mohamed A. ;
Zhang, Hongliang ;
Song, Lingyang ;
Seddik, Karim G. ;
Han, Zhu ;
Li, Geoffrey Ye .
IEEE TRANSACTIONS ON COGNITIVE COMMUNICATIONS AND NETWORKING, 2020, 6 (03) :990-1002
[7]   MIMO-NOMA Networks Relying on Reconfigurable Intelligent Surface: A Signal Cancellation-Based Design [J].
Hou, Tianwei ;
Liu, Yuanwei ;
Song, Zhengyu ;
Sun, Xin ;
Chen, Yue .
IEEE TRANSACTIONS ON COMMUNICATIONS, 2020, 68 (11) :6932-6944
[8]   Reconfigurable Intelligent Surface Aided NOMA Networks [J].
Hou, Tianwei ;
Liu, Yuanwei ;
Song, Zhengyu ;
Sun, Xin ;
Chen, Yue ;
Hanzo, Lajos .
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2020, 38 (11) :2575-2588
[9]   Power-Domain Non-Orthogonal Multiple Access (NOMA) in 5G Systems: Potentials and Challenges [J].
Islam, S. M. Riazul ;
Avazov, Nurilla ;
Dobre, Octavia A. ;
Kwak, Kyung-Sup .
IEEE COMMUNICATIONS SURVEYS AND TUTORIALS, 2017, 19 (02) :721-742
[10]   RIS Enhanced Massive Non-Orthogonal Multiple Access Networks: Deployment and Passive Beamforming Design [J].
Liu, Xiao ;
Liu, Yuanwei ;
Chen, Yue ;
Poor, H. Vincent .
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2021, 39 (04) :1057-1071
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