Rate-Splitting Multiple Access for 6G—Part I: Principles, Applications and Future Works

Mishra, Anup; Mao, Yijie; Dizdar, Onur; Clerckx, Bruno

doi:10.1109/lcomm.2022.3192012

Cited by 40 publications

(25 citation statements)

References 20 publications

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“…1) RSMA: RSMA has received significant attention recently due to its capability to improve the spectral/energy efficiencies, robustness, reliability, and latency of downlink and uplink multi-user transmissions [16], [17]. In downlink RSMA, the users' messages are split into common and private streams using available channel state information at the transmitter (CSIT) [18].…”

Section: A Related Workmentioning

confidence: 99%

Outage Performance Analysis of RSMA-Aided Semi-Grant-Free Transmission Systems

Xiao

Yang

et al. 2023

IEEE Open J. Commun. Soc.

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In this paper, we analyze the outage performance of a rate-splitting multiple access (RSMA)aided semi-grant-free (SGF) transmission system, in which a grant-based user (GBU) and multiple grantfree users (GFUs) access the base station by sharing the same resource blocks. In the RSMA-aided SGF (RSMA-SGF) transmission system, the GBU and admitted GFU are respectively treated as the primary and secondary users by using the cognitive radio principle. With the aid of RSMA, the admitted GFU's transmit power allocation, target rate allocation, and successive interference cancellation decoding order are jointly optimized to attain the maximum achievable rate for the admitted GFU, without deteriorating the GBU's outage performance compared to orthogonal multiple access. Taking into account the extended non-outage zone achieved by rate-splitting, a closed-form expression is derived for the outage probability of the admitted GFU in the considered RSMA-SGF system. Asymptotic analysis for the admitted GFU's outage probability is also provided. The superior outage performance and full multiuser diversity gain achieved by the RSMA-SGF transmission system are verified by the analytical and simulation results.INDEX TERMS Grant-free transmissions, multiple access, outage probability, rate-splitting.

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Section: A Related Workmentioning

confidence: 99%

Outage Performance Analysis of RSMA-Aided Semi-Grant-Free Transmission Systems

Xiao

Yang

et al. 2023

IEEE Open J. Commun. Soc.

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“…In [22], [23] and [24], the authors present the principles, applications, and future works of RSMA, as well as discuss its interplay with integrated sensing and communications, and with RIS.…”

Section: Next Generation Multiple Accessmentioning

confidence: 99%

A Survey on Enabling Technologies and Recent Advancements in 6G Communication

Kamath

Bhandari²,

Shekhar³

et al. 2023

J. Phys.: Conf. Ser.

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The growth of IoT and data-driven applications has caused network evolution with a demand for high internet speeds capable of handling data-intensive operations and high-performance computing in real-time. Despite massive strides in the past decade to achieve low-latency ultra-reliable network connections, by 2030, 5G technology will be unable to keep pace with emerging applications like unmanned autonomous vehicles, brain-computer interactive devices, extended reality (XR), ubiquitous AI, Internet of Everything and global network coverage. Subsequently, there will arise a need to transcend from 5G to 6G. 6G is being touted as the next giant leap forward to support ultra-fast intelligent networks resulting in speculations about the various use cases which will adopt 6G. We discuss the enabling technologies and recent advancements in the development of 6G. We talk about the most advanced and promising technologies that will revolutionise 6G communication. Furthermore, we give an objective analysis of these technologies and possible hindrances in their adoption.

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“…Due to the capability to improve spectrum efficiency, enhance reliability, and reduce latency for multi-user transmissions, rate-splitting (RS) has received a lot of attention [29], [30]. For downlink multi-user transmissions, the user messages were split into the common and private streams by using RS, which not only bridges NOMA and space division multiple access (SDMA), but also provides tradeoff between system performance and implementation complexity [31].…”

Section: Introductionmentioning

confidence: 99%