Layer-aware Interference Mitigation Scheme for Downlink Multi-User SCMA System

被引：0
|
作者：
Li, Xinmin [1 ]
Qiu, Ling [1 ]
Liang, Xiaowen [1 ]
机构：
[1] Univ Sci & Technol China, Sch Informat Sci & Technol, Chinese Acad Sci, Key Lab Wireless Opt Commun, Hefei, Anhui, Peoples R China
来源：
2017 IEEE 85TH VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING) | 2017年
关键词：
Sparse code multiple access; downlink; precoding; generalized singular value decomposition;
D O I：
暂无
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Sparse code multiple access system with multiple antennas offers unprecedented massive connectivity and capacity. To reduce the interference in a downlink multiple user SCMA (MU-SCMA) system, we propose a layer-aware interference mitigation scheme (L-AIMS). Firstly, preprocess the codewords of paired users to mitigate the intra-layer interference. Secondly, adopt the generalized singular value decomposition to mitigate the inter-user interference. Then, we obtain the adjusted rate of paired users with L-AIMS. The simulation results show that the proposed L-AIMS can improve the sum rate of paired users and the adjusted rate of the user with bad channel condition compared with the original scheme.
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收藏
页数：5
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