ABSTRACT

In this work, a novel network is proposed, which supports simultaneous dual-hop and multi-hop transmissions using the key concept of non-orthogonal multiple access (NOMA). The proposed network is designed in such a way that the existing infrastructure of a multi-hop network can be utilised efficiently for concurrent dual-hop transmissions. While one source transmits its signal to a remote destination via $N$ relay nodes in $(N+1)$ time slots, a maximum of another $N$ sources may transmit their information to the corresponding $N$ destinations using dual-hop transmissions via the same $N$ relay nodes over $(N+2)$ time slots. The performance of this hybrid dual-hop/multi-hop network is analysed and the impact of number of hops, transmit signal-to-noise ratio (SNR) and imperfection of successive interference cancellation (SIC) on the outage performance of each source is evaluated. Novel closed-form expressions for outage probability and ergodic capacity have been developed to assess the performance of the proposed network. In addition, an asymptotic performance analysis has also been also carried out for both outage probability and ergodic capacity of the proposed network.

摘要

在这项工作中，提出了一种新颖的网络，它使用非正交多址接入 (NOMA) 的关键概念支持同步双跳和多跳传输。所提议的网络的设计方式使得多跳网络的现有基础设施可以有效地用于并发双跳传输。当一个源通过以下方式将其信号传输到远程目的地时$否$中的中继节点$(否+\mathrm{1个})$时隙，最多另一个$否$来源可以将他们的信息传送给相应的$否$通过相同的使用双跳传输的目的地$否$中继节点$(否+\mathrm{2个})$时隙。分析了这种混合双跳/多跳网络的性能，跳数、传输信噪比 (SNR) 和连续干扰消除 (SIC) 的不完善对每个源的中断性能的影响是评估。已经开发了新的中断概率和遍历容量的封闭式表达式来评估所提议网络的性能。此外，还对拟议网络的中断概率和遍历容量进行了渐近性能分析。