论文标题
全双工合作MIMO-NOMA系统的新天线选择方案
New Antenna Selection Schemes for Full-Duplex Cooperative MIMO-NOMA Systems
论文作者
论文摘要
在本文中,我们解决了全双工(FD)合作的非正交多访问(NOMA)系统中的天线选择(AS)问题,其中多端Aantenna FD继电器桥梁桥接了多方Antenna Base Station和Noma远端用户之间的连接。具体而言,提出了两个方案,即最大 - $ \ suu $和最大$ \ suuu $,以分别在或远处和远处的用户分别最大化端到端的端到端信噪比interference-plus-noise比率。此外,两阶段作为方案,即服务质量(QOS)供应方案,旨在在远面用户实现特定费率,同时提高近用户的速度。为了提高QoS配置作为方案的性能,在继电器上应用动态天线聚类的概念,以自适应将继电器的天线自适应分配到发射和接收子集。提出的作为计划的确切中断概率和可实现的速率表达式。为了提供最大 - $ \ suu $和max-$ \ suuu $的更多见解,封闭形式的渐近中断概率表达式。我们的结果表明,虽然QoS供应作为方案可以在继电器上为静态天线设置提供近乎最佳的性能,但它提供了最高$ 12 \%$ $的平均汇率利率,而固定天线设置的最佳选择。
In this paper, we address the antenna selection (AS) problem in full-duplex (FD) cooperative non-orthogonal multiple access (NOMA) systems, where a multi-antenna FD relay bridges the connection between the multi-antenna base station and NOMA far user. Specifically, two AS schemes, namely max-$\SUu$ and max-$\SUuu$, are proposed to maximize the end-to-end signal-to-interference-plus-noise ratio at either or both near and far users, respectively. Moreover, a two-stage AS scheme, namely quality-of-service (QoS) provisioning scheme, is designed to realize a specific rate at the far user while improving the near user's rate. To enhance the performance of the QoS provisioning AS scheme, the idea of dynamic antenna clustering is applied at the relay to adaptively partition the relay's antennas into transmit and receive subsets. The proposed AS schemes' exact outage probability and achievable rate expressions are derived. To provide more insight, closed-form asymptotic outage probability expressions for the max-$\SUu$ and max-$\SUuu$ AS schemes are obtained. Our results show that while the QoS provisioning AS scheme can deliver a near-optimal performance for static antenna setup at the relay, it provides up to $12\%$ average sum rate gain over the optimum AS selection with fixed antenna setup.