Max-Min Fairness of Rate-Splitting Multiple Access With Finite Blocklength Communications

Xu, Yunnuo; Mao, Yijie; Dizdar, Onur; Clerckx, Bruno

doi:10.1109/tvt.2022.3229822

Cited by 22 publications

(5 citation statements)

References 38 publications

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“…In [49], the authors proposed a flexible RSMA scheme for a MISO BC with FBL and showed that their proposed scheme outperforms SDMA and NOMA. In [50], [51], it was shown that RSMA can achieve the same minimum or sum rate as NOMA and SDMA with a smaller packet length, meaning that RSMA may reduce latency for a given target rate. In [52], the authors proposed resource allocation schemes for RSMA in a MISO URLLC BC, showing that RSMA provides a higher effective throughput than NOMA.…”

Section: A Related Workmentioning

confidence: 99%

Spectral and Energy Efficiency Maximization of MISO STAR-RIS-Assisted URLLC Systems

2023

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This paper proposes a general optimization framework for rate splitting multiple access (RSMA) in beyond diagonal (BD) reconfigurable intelligent surface (RIS) assisted ultra-reliable low-latency communications (URLLC) systems. This framework can solve a large family of optimization problems in which the objective and/or constraints are linear functions of the rates and/or energy efficiency (EE) of users. Using this framework, we show that RSMA and RIS can be mutually beneficial tools when the system is overloaded, i.e., when the number of users per cell is higher than the number of base station (BS) antennas. Additionally, we show that the benefits of RSMA increase when the packets are shorter and/or the reliability constraint is more stringent. Furthermore, we show that the RSMA benefits increase with the number of users per cell and decrease with the number of BS antennas. Finally, we show that RIS (either diagonal or BD) can highly improve the system performance, and BD-RIS outperforms regular RIS.

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Section: A Related Workmentioning

confidence: 99%

Spectral and Energy Efficiency Maximization of MISO STAR-RIS-Assisted URLLC Systems

2023

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“…RSMA outperforms other multiple access techniques by offering greater flexibility and powerful interference management capabilities [10]. In downlink RSMA, numerous studies have focused on optimizing the transmission power and precoding vectors for both the common and private signals to achieve various objectives, such as sum-rate maximization [10,[13][14][15], max-min rate fairness [16,17], and energy efficiency maximization [11,18]. The symbol is used to denote that an aspect is included in the study, while indicates that it is not.…”

Section: Related Workmentioning

confidence: 99%

“…Different from the previous studies, we focus on a multi-antenna FlyBS with RSMA that can fly along a 3D trajectory while providing communication services to mobile ground users. The multi-antenna technology has been extensively employed in groundbased BSs [10,11,[13][14][15][16][17][18]. By leveraging the benefits of increased signal strength, expanded coverage, reduced interference, and beamforming capabilities, multi-antenna arrays can provide reliable and high-quality wireless services.…”

Section: Related Workmentioning

confidence: 99%

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TD3-Based Optimization Framework for RSMA-Enhanced UAV-Aided Downlink Communications in Remote Areas

Nguyen,

Dang

et al. 2023

Remote Sensing

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The need for reliable wireless communication in remote areas has led to the adoption of unmanned aerial vehicles (UAVs) as flying base stations (FlyBSs). FlyBSs hover over a designated area to ensure continuous communication coverage for mobile users on the ground. Moreover, rate-splitting multiple access (RSMA) has emerged as a promising interference management scheme in multi-user communication systems. In this paper, we investigate an RSMA-enhanced FlyBS downlink communication system and formulate an optimization problem to maximize the sum-rate of users, taking into account the three-dimensional FlyBS trajectory and RSMA parameters. To address this continuous non-convex optimization problem, we propose a TD3-RFBS optimization framework based on the twin-delayed deep deterministic policy gradient (TD3). This framework overcomes the limitations associated with the overestimation issue encountered in the deep deterministic policy gradient (DDPG), a well-known deep reinforcement learning method. Our simulation results demonstrate that TD3-RFBS outperforms existing solutions for FlyBS downlink communication systems, indicating its potential as a solution for future wireless networks.

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“…Ref. [ 21 ] investigated RSMA in short-packet communication and demonstrated that RSMA with smaller block lengths achieves the same maximum–minimum fairness rate as NOMA and space division multiple access (SDMA). Ref.…”

Section: Introductionmentioning

confidence: 99%

RIS-Assisted D2D Communication over Nakagami-m Fading with RSMA

Ding,

Chen,

Yan

et al. 2024

Sensors

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In this study, we investigated reconfigurable intelligent surface (RIS)-assisted device-to-device (D2D) communication systems over Nakagami-m fading channels. To enhance the reliability of RIS-assisted D2D communications, we utilized the rate-splitting multiple access (RSMA) technique to maximize the achievable ergodic rate for our considered systems. Specifically, both devices decoded the common symbol by treating private symbols as interference, and then each private symbol was decoded by treating the other as interference. In order to maximize the achievable ergodic rate at the destination, we analyzed the achievable ergodic rate of the RIS link and the D2D link, and the destination jointly decoded both symbols transmitted from the source and device by involving the maximum ratio combination (MRC). We obtained a closed-form expression for the achievable ergodic rate of the proposed RIS-assisted D2D communication system. Finally, we investigated the influence of power allocation factors and the number of reflective elements on the achievable ergodic rate. As seen by the numerical results, there was a good match between the analysis and simulation results, as well as significant superiority compared with existing works.

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Max-Min Fairness of Rate-Splitting Multiple Access With Finite Blocklength Communications

Cited by 22 publications

References 38 publications

Spectral and Energy Efficiency Maximization of MISO STAR-RIS-Assisted URLLC Systems

Spectral and Energy Efficiency Maximization of MISO STAR-RIS-Assisted URLLC Systems

TD3-Based Optimization Framework for RSMA-Enhanced UAV-Aided Downlink Communications in Remote Areas

RIS-Assisted D2D Communication over Nakagami-m Fading with RSMA

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