Enhanced User Pairing and Power Allocation Strategies for Downlink NOMA Systems with Imperfections in SIC

被引:4
作者
Mouni, Nemalidinne Siva [1 ]
Reddy, Pavan M. [2 ]
Kumar, Abhinav [1 ]
Upadhyay, Prabhat K. [3 ]
机构
[1] Indian Inst Technol Hyderabad, Dept Elect Engn, Hyderabad 502284, Telangana, India
[2] WiSig Networks Pvt Ltd, Hyderabad 502284, Telangana, India
[3] Indian Inst Technol Indore, Dept Elect Engn, Indore 453552, Madhya Pradesh, India
来源
2023 15TH INTERNATIONAL CONFERENCE ON COMMUNICATION SYSTEMS & NETWORKS, COMSNETS | 2023年
关键词
Imperfect successive interference cancellation (SIC); multi-user clustering; non-orthogonal multiple access (NOMA); power allocation; spectral efficiency;
D O I
10.1109/COMSNETS56262.2023.10041284
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
Non-orthogonal multiple access (NOMA) is a key energy and spectrally-efficient multiple access technique. In this poster, we analyze the adaptive multi-user clustering (AMUC) for the downlink NOMA systems in the presence of imperfections in successive interference cancellation (SIC) and propose various user arrangements and power allocation strategies. Given a cluster arrangement, we initially allocate the minimum required power and ensure each user in the cluster achieves at least orthogonal multiple access (OMA) rates. Then, we present fair, greedy, and max-min power allocation strategies to utilize the remaining power and achieve various trade-offs. Through numerical evaluations, we show that the proposed user arrangements and power allocation strategies achieve a significant improvement in network performance when compared to the state-of-the-art algorithms.
引用
收藏
页数:5
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