论文标题
基于重复的NOMA传播及其中断概率分析
Repetition-based NOMA Transmission and Its Outage Probability Analysis
论文作者
论文摘要
在本文中，我们讨论了一种非正交的多重访问（NOMA）方案，以利用重复（即基于重复的Noma）利用高多样性增长。与传统的电源域NOMA不同，所有用户都可以具有相同的发射功率，但重复数量不同。由于多样性的增益很高，没有瞬时通道状态信息（CSI）反馈以进行电力分配的情况下，就可以实现较低的中断概率。得出了在中断概率上上限的封闭形式表达式，因此可以决定将关键参数的值确定维持在目标值以下的中断概率。我们还考虑有限长度代码的平均误差概率。将仿真结果与派生的边界进行了比较，并表明边界相当紧密，可用于确定关键参数（例如代码速率）以保证目标误差概率。
In this paper, we discuss a non-orthogonal multiple access (NOMA) scheme to exploit a high diversity gain using repetition, namely repetition-based NOMA. Unlike conventional power-domain NOMA, all the users can have the same transmit power, but different number of repetitions. Thanks to a high diversity gain, a low outage probability can be achieved without instantaneous channel state information (CSI) feedback for power allocation. A closed-form expression for an upper-bound on the outage probability is derived so that the values of key parameters can be decided to maintain the outage probability below a target value. We also consider the average error probability for finite-length codes. Simulation results are compared with the derived bounds and it is shown that the bounds are reasonably tight and can be used to decide key parameters (e.g., code rates) to guarantee target error probabilities.
