A Promising Non-orthogonal Multiple Access Scheme:Devoting to System Performance Improvement
CUI Zhao-yang1, HUANG Rong-lan2, WAN De-huan3
1. Guangzhou Power Supply Bureau Co., Ltd., Guangzhou, Guangdong 510620, China;
2. Guangxi Colleges and Universities Key Laboratory of Image Processing and Intelligent Information System, Wuzhou University, Wuzhou, Guangxi 543002, China;
3. Guangdong University of Finance, Guangzhou, Guangdong 510521, China
Abstract：This paper aims to solve several underlying problems arising from the application of current single-cell power domain non-orthogonal multiple access (NOMA) structure.Specifically,to solve the problems lying in the current single-cell structure such as high decoding complexity,poor user fairness,and bad quality of service of cell edge users,this paper integrates NOMA technique with the orthogonal resource allocation strategy to present a parallel multiple-pairing operation unit,where the frequency band orthogonally allocated to each central user and the cell edge user share the total bandwidth by pairing with each central user to perform NOMA and a full-duplex cooperative communication strategy is further introduced to the central users for they have the priori-knowledge of the cell edge user.Simulation results verify the validity of the proposed scheme.
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2020, Vol. 48 
