通信学报2017，Vol.38Issue(2)：165-172,8.DOI:10.11959/j.issn.1000-436x.2017038
联合时移和空间划分方法抑制大规模MIMO导频污染
Pilot decontamination in massive MIMO system combining time-shifted and cell sectorization pilot assignment
摘要
Abstract
Pilot contamination is appeared in massive MIMO (multiple input multiple output) system when using the same pilot sequences at different cells to get the channel state information. It becomes a bottleneck problem of massive MIMO when the number of antenna goes infinite. In order to dealt with pilot contamination, a new TS-CSPA joint scheme was proposed. This scheme can mitigate pilot contamination by reduce the reuse of pilot sequence through the time domain and space domain. And the closed-form expression for the achieved rates and signal to interference plus noise ratio(SINR) to verify the advantages of the proposed scheme were given. Numerical results show that significant performance gains to mitigate pilot contamination problem compared to other methods.关键词
大规模MIMO/导频污染/频谱效率/信道估计Key words
massive MIMO/pilot contamination/spectral efficiency/channel estimate分类
信息技术与安全科学引用本文复制引用
宋新雷,杨霖,杜嘉良..联合时移和空间划分方法抑制大规模MIMO导频污染[J].通信学报,2017,38(2):165-172,8.基金项目
国家自然科学基金资助项目(No.61370012, No.61571082) （No.61370012, No.61571082）
国家科技重大专项基金资助项目(No.2014ZX03004003)The National Natural Science Foundation of China (No.61370012, No.61571082), TheNational Science and Technology Major Project of the Ministry of Science and Technology of China (No. 2014ZX03004003) （No.2014ZX03004003）
