- [BK21] 초청 세미나 [9/19] Rate-Splitting Multiple Access for 6G
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Y-BASE Energy-Network-Communication 그룹 이장원 교수님께서 아래와 같이 초청 세미나를 개최하오니 많은 참여 부탁드립니다.
◎ 일시: 2022년 9월 19일(월) 17:00 ~◎ 장소: Hybrid 진행 ※ online 참여보다는 대면으로 진행되는 세미나실로 많은 참석 부탁드립니다.- 연세대학교 제4공학관 D508호- ID: 951 5947 2692- PW: 665260
◎ 제목: Rate-Splitting Multiple Access for 6G
◎ 연사: Bruno Clerckx / Imperial College London
◎ 초청: 전기전자공학과 이장원 교수
Rate-Splitting Multiple Access (RSMA), based on (linearly or nonlinearly) precoded Rate-Splitting (RS) at the transmitter and Successive Interference Cancellation (SIC) at the receivers, has emerged as a novel, general and powerful framework for the design and optimization of non-orthogonal transmission, multiple access, and interference management strategies in future MIMO wireless networks. RSMA relies on the split of messages and the non-orthogonal transmission of common messages decoded by multiple users, and private messages decoded by their corresponding users. This enables RSMA to softly bridge and therefore reconcile the two extreme strategies of fully decode interference and treat interference as noise. RSMA has been shown to generalize, and subsume as special cases, four seemingly different strategies, namely Space Division Multiple Access (SDMA) based on linear precoding (currently used in 5G), Orthogonal Multiple Access (OMA), Non-Orthogonal Multiple Access (NOMA) based on linearly precoded superposition coding with SIC, and physical-layer multicasting. RSMA boils down to those strategies in some specific conditions, but outperforms them all in general. Through information and communication theoretic analysis, RSMA is shown to be optimal (from a Degrees-of-Freedom region perspective) in a number of scenarios and provides significant room for spectral efficiency, energy efficiency, fairness, reliability, QoS enhancements in a wide range of network loads and user deployments, robustness against imperfect Channel State Information at the Transmitter (CSIT), as well as feedback overhead and complexity reduction over conventional strategies used in 5G. The benefits of RSMA have been demonstrated in a wide range of scenarios (MU-MIMO, massive MIMO, multi-cell/cell-free MIMO/CoMP, overloaded systems, NOMA, multigroup multicasting, mmwave communications, communications in the presence of RF impairments, superimposed unicast and multicast transmission, relay, reconfigurable intelligent surfaces, etc), systems (terrestrial, cellular, satellite, …), and functionalities (integration of communication, sensing, power transfer, etc). Thanks to its versatility, RSMA has the potential to tackle challenges of modern communication systems and is a gold mine of research problems for academia and industry, spanning fundamental limits, optimization, PHY and MAC layers, and standardization. This lecture will share key principles of RSMA, recent developments, emerging applications and opportunities of RSMA for 6G networks and will cover some of the topics currently investigated as part of the new IEEE special interest group on RSMA https://sites.google.com/view/ieee-comsoc-wtc-sig-rsma/home .