非正交多重存取傳輸下之功率分配研究

Power Allocation in Downlink Non-Orthogonal Multiple Access System

詹祐驊(Yu-Hua Chan)

指導教授 ： 吳燦明

中原大學/電機資訊學院/電機工程研究所/碩士(2018年)

https://doi.org/10.6840/cycu201800578

摘要

在新一代的5G 網路技術裡, 非正交多重存取(Non- orthogonal
multiple access, NOMA) 被大量的研究, 多個用戶訊號可以在傳
輸端的功率域上疊加, 並在接收端上採用連續干擾消除法
(Successive interference cancellation,SIC), 來解碼多個用戶的訊號。利用NOMA 在基站(Base Station,BS) 上的同一無線電資源, 同時服務一個或多個用戶。在這篇論文中, 我們研究了多個用戶的下行鏈路NOMA 系統, 在使用者配對中, 整理出現有三種的使用者配對方法並提出通道條件排序的用戶配對演算法(Channel State Sorting-Pairing Algorithm, CSS-PA) 來做比較。功率分配部分則是NOMA 和一般OMA 做比較。在模擬結果的分析顯示, 提出基於通道條件排序的用戶配對演算法方案, 可以改善錯誤機率和提升頻譜效率這兩種的性能, 此外看出NOMA 與傳統的OMA 相比，前者方法可以提供更好的系統容量。

關鍵字

非正交多重存取 ； 功率分配 ； 用戶配對

並列摘要

In the new generation of 5G network technology, NOMA has been extensively studied. Multiple users can superimpose on the power domain of the transmission end, and use SIC on the receiving end to decode signals of multiple users. Utilize the same radio resource of the NOMA on the BS to
serve one or more users simultaneously. In this thesis, we can learn the Non- orthogonal multiple access in downlink of the multi-input multi-output system.In the user pairing,we sorted out the existing three kinds of user pairing methods and propose CSS-PA to comparison.
The power allocation is compared to NOMA and OMA.
The simulation results show that channel state sorting-pairing algorithm can improve spectral efficiency and error probability ,the comparison between NOMA and OMA shows that NOMA provides more system capacity than OMA.

並列關鍵字

NOMA ； power allocation ； user pairing

參考文獻

[1] L. Dai, B. Wang, Y. Yuan, and, S. Han, “Non-Orthogonal Multiple Access for 5G:Solutions, Challenges, Opportunities, and Future.” IEEE Commun. Mag.,vol.53, no.9, pp.74-81, Sep. 2015.

[2] Z. Edoo, M.R. Hojeij, C.A. Nour, J. Farah, and, C. Douillard,“Evaluation of Intra-Subband Power Allocation for a Downlink Non-Orthogonal Multiple Access System,”

IEEE. GC. Wkshps., pp.1-7, Dec 2016.

[3] H. Zhang, D.K. Zhang, W.X. Meng, and, C. Li, “User pairing algorithm with SIC in non-orthogonal multiple access system,” IEEE. ICC., pp.1-6, Sep. 2016.

[4] M.R. Hojeij, C.A. Nour, J. Farah, and, C. Douilard, “Waterfilling-Based Proportional Fairness Scheduler for Downlink Non-Orthogonal Multiple Access,” IEEE.Commun. Lett., vol.53, no.2, pp.230-233, APR. 2017.