GPC 2017: Green, Pervasive, and Cloud Computing pp 129-137 | Cite as
A Study of Interference Cancellation for NOMA Downlink Near-Far Effect to Support Big Data
Abstract
Non-orthogonal Multiple Access (NOMA) is proposed as a new multiple access for 5G communication. However, one of the crucial constraints is near-far effect that occurs to the NOMA downlink and serial interference cancellation (SIC). To avoid near-far effect, we propose 3D beam forming application based on antenna polarization in M-MIMO systems to re-group users. The proposed scheme effectively reduces the number of users within the beam coverage. On the other hand, we propose a method that adaptively selects channel estimation method according to the power of the user in SIC process to eliminate the effect.
Keywords
Non-orthogonal multiple access Serial interference cancellation 3D beam-forming Near-far effectNotes
Acknowledgements
This work was supported in part by the Basic Science Research Program through National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning under Grant 2015R1C1A1A02037515, and by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. NRF-2016R1A2B4012638). Also, This work is also supported by the Natural Science Foundation of Jiangsu Province under Grant BK20160287, and in part by Fundamental Research Funds for the Central Universities under Grant 2015B30614.
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