Energy efficient transmission in dynamic PDMA‐based systems with RF energy harvesting,Transactions on Emerging Telecommunications Technologies

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Energy efficient transmission in dynamic PDMA‐based systems with RF energy harvesting
Transactions on Emerging Telecommunications Technologies ( IF 2.5 ) Pub Date : 2020-03-19 , DOI: 10.1002/ett.3923
A. Hooshiary ₁ , P. Azmi ₁ , N. Mokari ₁

Affiliation

Nonorthogonal multiple access (NOMA) and energy harvesting technologies are two promising approaches to increase spectral and energy efficiency, respectively. In this paper, a pattern division multiple access (PDMA) uplink transmission network in which users are able to harvest energy from the received radio frequency power is considered. In order to maximize the energy efficiency, we perform resource allocation in the power, subcarrier, and time domains. Also, for each time slot, the pattern matrix is determined dynamically. To enhance the detection reliability, successive interference cancellation and maximal ratio combining at each receiver are utilized. For resource allocation, the actual harvested and available energies of the users are considered. Moreover, in order to perform a comprehensive analysis, further to PDMA, the energy efficiency of the power domain NOMA (PD‐NOMA) is also investigated and the results are compared. It is shown that the energy efficiency and the average total transferred data of PDMA are higher than that of PD‐NOMA.

中文翻译：

具有射频能量收集功能的基于动态PDMA的系统中的节能传输

非正交多路访问（NOMA）和能量收集技术分别是增加频谱和能量效率的两种有前途的方法。在本文中，考虑了一种模式划分多址（PDMA）上行链路传输网络，其中用户能够从接收到的射频功率中获取能量。为了最大程度地提高能源效率，我们在功率，子载波和时域中执行资源分配。而且，对于每个时隙，动态地确定模式矩阵。为了提高检测的可靠性，在每个接收器处利用了相继的干扰消除和最大比率组合。对于资源分配，要考虑用户的实际收获能量和可用能量。此外，为了对PDMA进行更深入的分析，还研究了功率域NOMA（PD-NOMA）的能源效率，并对结果进行了比较。结果表明，PDMA的能效和平均总传输数据高于PD-NOMA。

更新日期：2020-03-19

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