Outage Performance for Dynamic Power Allocation in Hybrid Non-Orthogonal Multiple Access Systems
Outage Performance for Dynamic Power Allocation in Hybrid Non-Orthogonal Multiple Access Systems
复制标题
混合非正交多址系统中动态功率分配的停电性能
DOI：
10.1109/lcomm.2016.2581803
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Ma Zheng
中科院分区：
文献类型：
--
作者：
Yang Zheng;Ding Zhiguo;Fan Pingzhi;Ma Zheng
在这封信中，我们提出了一种新的动态功率分配方案的混合非正交多址（DH-NOMA）。推导了DH-NOMA系统中中断概率的精确表达式及其在高信噪比下的渐近近似。蒙特卡洛模拟和分析结果被用来比较所提出的方案与现有的作品，如NOMA基于固定功率分配（F-NOMA）和认知无线电启发NOMA（CR-NOMA）。仿真结果表明，DH-NOMA方案比传统的正交多址接入方案具有更好的中断性能，并且比F-NOMA和CR-NOMA方案在两个用户的速率之间实现了更均衡的折衷。
In this letter, we propose a novel dynamic power allocation scheme for hybrid non-orthogonal multiple access (DH-NOMA). The exact expressions for the outage probabilities and their asymptotic approximations at high signal-to-noise ratio are derived in DH-NOMA systems. Both Monte Carlo simulations and analytical results are used to compare the proposed scheme with the existing works, such as NOMA based on fixed power allocation (F-NOMA) and cognitive radio inspired NOMA (CR-NOMA). The provided results demonstrate that the DH-NOMA scheme can always achieve better outage performance than the traditional orthogonal multiple access, and achieve a more balanced tradeoff between the two user individual rates than F-NOMA and CR-NOMA.