Resource Allocation Design for IRS-Aided Downlink MU-MISO RSMA Systems

Fu, Hao; Feng, Suili; Ng, Derrick Wing Kwan

doi:10.1109/iccworkshops50388.2021.9473650

Cited by 40 publications

(10 citation statements)

References 12 publications

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“…It is worthwhile to highlight here that the multi-RIS-aided multi-AP MU-MISO transmission network described in this section can be regarded as a general system model including all of the existing RIS-aided RSMA schemes. On one hand, when the transmission network adopts a 1layer RSMA, the illustrated general model boils down to [12], [13] with the number of APs N = 1, to [14], [15] with the number of RISs L = 1, and to [16], [17] with both N = 1 and L = 1; when the transmission network applies a 2-layer RSMA and N = 1, the illustrated model boils down to the model utilized in [18], [19]. This system model can also be further extended by embracing the generalized RSMA.…”

Section: B Architecture For Rismentioning

confidence: 99%

“…This system model can also be further extended by embracing the generalized RSMA. On the other hand, most of the existing work [12]- [16], [18], [19] considers the deployment of single-connected RISs; only [17] considers designs of both single-and fully-connected RISs.…”

Section: B Architecture For Rismentioning

confidence: 99%

“…Remark 2. Given the above RIS-aided and RSMA-enabled system model, existing works have investigated joint transmit beamforming and phase design by considering various metrics, which include energy efficiency maximization [12], [15], outage probability analysis [13], [18], power minimization [14], max-min fairness [16], and sum-rate maximization The AP applies a 1-layer RSMA and the RIS is assumed to have a single-connected architecture. Channels for direct and reflect links are both realized by Rayleigh fading models to account for small-scale fading.…”

Section: B Architecture For Rismentioning

confidence: 99%

“…2) Joint Transmit Beamforming and Phase Design with Different RIS Constraints: Existing research on RIS-aided RSMA mainly focused on joint transmit beamforming and single-connected RIS design [12]- [16], [18], [19] and only the recent work [17] considered both single-and fully-connected RIS design. It is interesting to consider the joint RSMA and RIS design when RIS has a group-connected architecture.…”

Section: Conclusion and Open Problemsmentioning

confidence: 99%

“…Inspired by the appealing advantages of RIS and RSMA as well as the performance benefits of synergizing RIS and other techniques [8]- [10], some recent works [12]- [19] have investigated the interplay between RSMA and RIS, and shown their benefits in terms of energy efficiency maximization [12], [15], outage probability analysis [13], [18], transmit power minimization [14], max-min fairness [16], and spectral efficiency maximization [17], [19]. However, none of the above works explain the fundamental motivation to integrate RSMA with RIS.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Rate-Splitting Multiple Access for 6G -- Part III: Interplay with Reconfigurable Intelligent Surfaces

Li¹,

Mao²,

Dizdar³

et al. 2022

Preprint

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This letter is the third part of a three-part tutorial that focuses on rate-splitting multiple access (RSMA) for 6G. As Part III of the tutorial, this letter provides an overview of integrating RSMA and reconfigurable intelligent surface (RIS). We first introduce two potential PHY layer techniques, namely, RSMA and RIS, including the need for integrating RSMA with RIS and how they could help each other. Next, we provide a general model of an RIS-aided RSMA system and summarize some key performance metrics. Then, we discuss the major advantages of RIS-aided RSMA networks, and illustrate the rate region of RIS-aided RSMA for both perfect and imperfect channel conditions. Finally, we summarize the research challenges and open problems for RIS-aided RSMA systems. In conclusion, RSMA is a promising technology for next generation multiple access (NGMA) and future networks such as 6G and beyond.

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Section: B Architecture For Rismentioning

confidence: 99%

Section: B Architecture For Rismentioning

confidence: 99%

Section: B Architecture For Rismentioning

confidence: 99%

Section: Conclusion and Open Problemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Rate-Splitting Multiple Access for 6G -- Part III: Interplay with Reconfigurable Intelligent Surfaces

Li¹,

Mao²,

Dizdar³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

Joint optimal beam forming and resource allocation in intelligent reflecting surface aided wireless power transfer rate splitting multiple access system

Naresh,

Pradeep Kumar,

Sireesha

et al. 2024

Concurrency and Computation

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SummaryThe intelligent reflecting surface (IRS) has recently become the most promising technology to achieve maximum beam‐forming gain with a simultaneous wireless information and power transfer (SWIPT) system. Many existing studies perform a single IRS deployment or utilize space division multiple access (SDMA) and non‐orthogonal multiple access (NOMA) schemes. However, the existing schemes face high time complexity and block signal transmission for larger indoor communications. Hence, this article introduces a dual IRS‐aided multiuser SWIPT system by implementing rate‐splitting multiple access (RSMA) systems. To enhance the minimum achievable rate and ensure the minimum harvesting energy (HE), this study proposes a joint successive convex approximation with an integrated optimization algorithm (SCA‐IOA). The proposed algorithm jointly optimizes the reflecting beam forming and power splitting (PS) coefficient of all the users effectively. The simulation results demonstrate the effectiveness of the proposed techniques and produce an outstanding performance for deploying dual IRS and implementing RSMA compared to traditional SDMA and NOMA systems.

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Opportunistic RIS-assisted rate splitting transmission in coordinated multiple points networks

Tian

Xiao

Wang

et al. 2023

Computer Communications

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Resource Allocation Design for IRS-Aided Downlink MU-MISO RSMA Systems

Cited by 40 publications

References 12 publications

Rate-Splitting Multiple Access for 6G -- Part III: Interplay with Reconfigurable Intelligent Surfaces

Rate-Splitting Multiple Access for 6G -- Part III: Interplay with Reconfigurable Intelligent Surfaces

Joint optimal beam forming and resource allocation in intelligent reflecting surface aided wireless power transfer rate splitting multiple access system

Opportunistic RIS-assisted rate splitting transmission in coordinated multiple points networks

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