Rate Splitting Multiple Access for Multigroup Multicast Beamforming in Cache-Enabled C-RAN

Zhou, Jiasi; Sun, Yanjing; Chen, Ruirui; Tellambura, Chintha

doi:10.1109/tvt.2021.3120093

Cited by 18 publications

(6 citation statements)

References 52 publications

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“…After all the conversions, the optimization problem ( 14) is converted into (31), which is solved through Algorithm 1.…”

Section: Iterative Algorithmmentioning

confidence: 99%

“…In (31), the number of constraints is calculated as 10K + 2. The number of iterations needed to reduce the duality gap to a small constant is upper bounded as…”

Section: Computational Complexitymentioning

confidence: 99%

“…For satellite and aerial integrated networks, the UAV subnetwork can significantly suppress the mutual interference via RSMA [30]. Through managing the BS clustering and designing the precoders in [31], the minimum weighted rate was maximized by Zhou et al, indicating the benefits of RSMA scheme. A sum-rate maximization scheme for RSMA systems was proposed, in which successive convex approximation was implemented for settling the original optimization [32].…”

Section: Introductionmentioning

confidence: 99%

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A Unified Rate-Splitting Framework for Secure Spectrum Sharing via Joint Precoding Optimization

Yang

Zhao

et al. 2023

IEEE Systems Journal

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To handle the security problem of cognitive radio (CR) systems, secondary users (SUs) are able to be designed to assist the primary user (PU) in secure transmission. To realize the spectrum sharing among CR users, we adopt the rate-splitting multiple access (RSMA) properly, with non-orthogonal multiple access (NOMA) and space division multiple access (SDMA) as its special cases. In this paper, we set up a unified ratesplitting framework to guarantee the safe spectrum sharing through multiple multi-access strategies, without the knowledge of wiretap channels. The precoding vectors at the transmitter are conjointly designed to boost the transmission of common stream, which is from both PU and SU. Besides, the private stream of the downlink CR system can be well secreted in the high-power common signal. As for NOMA and SDMA, when the message of SU is regarded as the friendly jamming signal, the security transmission requirement of PU can be similarly guaranteed via precoding design. Simulations validate that the rate-splitting framework we established can be effective in ensuring the spectrum sharing security for the secure users through RSMA, and the security for NOMA and SDMA is also able to be promoted through adjusting our designed framework.

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“…After all the conversions, the optimization problem ( 14) is converted into (31), which is solved through Algorithm 1.…”

Section: Iterative Algorithmmentioning

confidence: 99%

“…In (31), the number of constraints is calculated as 10K + 2. The number of iterations needed to reduce the duality gap to a small constant is upper bounded as…”

Section: Computational Complexitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Unified Rate-Splitting Framework for Secure Spectrum Sharing via Joint Precoding Optimization

Yang

Zhao

et al. 2023

IEEE Systems Journal

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“…Step 3: In each ℬ ∈ 𝔹, the 𝔾 𝐴 ℬ game is operated in a dispersive manner. In this game, the 𝒮 𝐶 ℬ and 𝒮 𝒟 𝑗 ℬ are game players, and their utility functions, i.e., 𝑈 𝐶 ℬ (•) and 𝑈 𝒟 𝑗 ℬ (•), are defined according to (6).…”

Section: Main Steps Of Our Rsma Resource Manage-ment Algorithmmentioning

confidence: 99%

“…Rate splitting technology grants all users the ability to partially decode the interference and partially treat the remaining interference as noise. By steering the power allocation between private and common parts, it is suitable for integrating with the multicast communication scenario for sixth generation (6G) wireless communications [6], [9].…”

Section: Introductionmentioning

confidence: 99%

Efficient Rate Splitting Multiple Access Scheme Based Cooperative Bargaining Solutions

Kim

2022

IEEE Access

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Due to the increasingly new communication technologies and growing traffic demands, dynamic spectrum allocation method becomes insufficient to guarantee the satisfaction of main wireless communication requirements such as spectrum and energy efficiency. In order to meet different requests, rate splitting multiple access (RSMA) has been recently presented as a generalized multiple access technique. In this study, we design a novel RSMA resource management scheme based on the cooperative bargaining game theory. According to the fundamental ideas of pessimistic utilitarian and optimistic max-min bargaining solutions, we can leverage a mutual consensus among different network users to improve the total system performance. Based on our interactive bargaining approach, the proposed scheme adaptively controls the spectrum and power resources in the RSMA system. To get a desirable fair-efficient solution, our bargaining strategy can make control decisions in a coordinated manner while ensuring the relevant trade-off between conflicting criteria. Under the diverse RSMA traffic scenario, the numerical simulation results demonstrate the efficiency of our proposed scheme over the existing state-of-the-art protocols. Finally, some open issues are spotted to shed lights on the need for further studies and future research efforts. INDEX TERMSRate splitting multiple access, Pessimistic utilitarian solution, Optimistic max-min solution, Cooperative Game model, Multiple access technique.

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Cooperative secure beamforming optimization for Full-Duplex Rate Splitting Multiple Access-enabled beyond-5G communication networks

Duan,

Li,

Wei

et al. 2024

Computers and Electrical Engineering

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Rate Splitting Multiple Access for Multigroup Multicast Beamforming in Cache-Enabled C-RAN

Cited by 18 publications

References 52 publications

A Unified Rate-Splitting Framework for Secure Spectrum Sharing via Joint Precoding Optimization

A Unified Rate-Splitting Framework for Secure Spectrum Sharing via Joint Precoding Optimization

Efficient Rate Splitting Multiple Access Scheme Based Cooperative Bargaining Solutions

Cooperative secure beamforming optimization for Full-Duplex Rate Splitting Multiple Access-enabled beyond-5G communication networks

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