论文标题
使用有限的区块沟通的最大速率分类多访问率的公平性
Max-Min Fairness of Rate-Splitting Multiple Access with Finite Blocklength Communications
论文作者
论文摘要
速率分类的多个访问（RSMA）已成为无线网络的灵活而有力的框架。在本文中，我们研究了与合作（用户延迟）传输的短包通信中下行链路多端RSMA的用户公平性。我们设计了最佳的时间分配和线性预编码，以使用有限的区块长（FBL）约束最大化最大最大公平性（MMF）速率。研究了各种网络负载，研究了RSMA的MMF速率和区块长度之间的关系以及合作传播的影响。数值结果表明，RSMA可以达到与非正交多重访问（NOMA）和空间分裂多访问（SDMA）相同的MMF速率，具有较小的块长度（因此较低的延迟），尤其是在合作传输部署中。因此，我们得出的结论是，RSMA是保证在低延迟通信中用户公平性的有希望的多重访问。
Rate-Splitting Multiple Access (RSMA) has emerged as a flexible and powerful framework for wireless networks. In this paper, we investigate the user fairness of downlink multi-antenna RSMA in short-packet communications with/without cooperative (user-relaying) transmission. We design optimal time allocation and linear precoders that maximize the Max-Min Fairness (MMF) rate with Finite Blocklength (FBL) constraints. The relation between the MMF rate and blocklength of RSMA, as well as the impact of cooperative transmission are investigated for a wide range of network loads. Numerical results demonstrate that RSMA can achieve the same MMF rate as Non-Orthogonal Multiple Access (NOMA) and Space Division Multiple Access (SDMA) with smaller blocklengths (and therefore lower latency), especially in cooperative transmission deployment. Hence, we conclude that RSMA is a promising multiple access for guaranteeing user fairness in low-latency communications.
