Indexed Multiple Access with Reconfigurable Intelligent Surfaces: The Reflection Tuning Potential

被引：4
|
作者：
Singh, Rohit [1 ]
Kaushik, Aryan [2 ]
Shin, Wonjae [3 ]
Alexandropoulos, George C. [4 ]
Toka, Mesut [5 ]
Di Renzo, Marco [6 ,7 ]
机构：
[1] Dr BR Ambedkar Natl Inst Technol, Elect & Commun Engn Dept, Jalandhar, India
[2] Univ Sussex, Brighton, England
[3] Korea Univ, Sch Elect Engn, Seoul, South Korea
[4] Kapodistrian Univ Athens, Dept Informat & Telecommun, Athens, Greece
[5] Ajou Univ, Dept Elect & Comp Engn, Seoul, South Korea
[6] CNRS, Lab Signals & Syst, Paris, France
[7] Paris Saclay Univ, Cent Supelec, Paris, France
来源：
IEEE COMMUNICATIONS MAGAZINE | 2024年 / 62卷 / 04期
基金：
新加坡国家研究基金会; 英国科研创新办公室;
关键词：
Indexing; Tuning; Transmitting antennas; NOMA; Interference cancellation; Multiaccess communication; Wireless communication; Modulation; Reconfigurable intelligent surfaces; MODULATION; MIMO;
D O I：
10.1109/MCOM.020.2300073
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Indexed modulation (IM) is an evolving technique that has become popular due to its ability of parallel data communication over distinct combinations of transmission entities. In this article, we first provide a comprehensive survey of IM-enabled multiple access (MA) techniques, emphasizing the shortcomings of existing non-indexed MA schemes. Theoretical comparisons are presented to show how the notion of indexing alleviates the limitations of non-indexed solutions. We also discuss the benefits of utilizing a reconfigurable intelligent surface (RIS) when deployed as an indexing entity. In particular, we propose an RIS-indexed multiple access (RIMA) transmission scheme that utilizes dynamic phase tuning to embed multi-user information over a single carrier. The performance of the proposed RIMA is assessed using simulation results that confirm its performance gains. The article further includes a list of relevant open technical issues and research directions.
引用
收藏
页码：120 / 126
页数：7
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