大规模MIMO蜂窝网络系统中的导频污染减轻方法
Pilot contamination reduction in very large MIMO cellular network
摘要
Abstract
Two pilot contamination reduction methods in very large MIMO cellular network were proposed by dividing all cells into two types of one-dimensional very large MIMO network. The same pilot sequences were used in cells in the same category while orthogonal pilot sequences were used between these two categorie. Then the pilot power control method can be used to achieve the purpose of alleviating pilot contamination. By coordinating among base stations, the nearly optimal length of pilot sequences and assignment of pilot transmission could be found through minimizing the sum of channel esti-mation mean square error of all base stations. Thus, much better performance of channel estimation could be obtained, greatly enhancing the sum rate in downlink in all cells.关键词
大规模多输入多输出/导频污染/蜂窝网络/时分双工系统/均方误差Key words
very large multiple-input multiple-output/pilot contamination/cellular network/time division duplex system/mean square error分类
信息技术与安全科学引用本文复制引用
王海荣,王玉辉,黄永明,杨绿溪..大规模MIMO蜂窝网络系统中的导频污染减轻方法[J].通信学报,2014,(1):24-33,10.基金项目
国家自然科学基金资助项目(60902012,61071113,61201172,61201176）；国家科技重大专项基金资助项目（2011ZX03003-001-02,2011ZX03003-003-03）；教育部博士点新教师基金资助项目（20090092120013,20100092110010）；江苏省自然科学基金资助项目（BK2011598,BK2011019）@@@@The National Natural Science Foundation of China (60902012,61071113,61201172,61201176) （60902012,61071113,61201172,61201176）；国家科技重大专项基金资助项目（2011ZX03003-001-02,2011ZX03003-003-03）；教育部博士点新教师基金资助项目（20090092120013,20100092110010）；江苏省自然科学基金资助项目（BK2011598,BK2011019）@@@@The National Natural Science Foundation of China (60902012,61071113,61201172,61201176）
The National Science and Technology Major Project of China (2011ZX03003-001-02,2011ZX03003-003-03) （2011ZX03003-001-02,2011ZX03003-003-03）
The Ph.D Programs Foundation of Ministry of Education of China (20090092120013,20100092110010) （20090092120013,20100092110010）
The Natural Science Foundation of Jiangsu Province (BK2011598, BK2011019) （BK2011598, BK2011019）
