supported in part by the National Natural Science Foundation of China under Grants 61971176 and 61901156;in part by the Anhui Provincial Natural Science Foundation under Grant 2008085QF281;in part by the Fundamental Research Fund for the Central Universities of China under Grant JZ2021HGTB0081。
This paper proposes a novel joint channel estimation and beamforming scheme for the massive multiple-input-multiple-output(MIMO)frequency-division duplexing(FDD) wireless legitimate surveillance system. With the propo...
National Key R&D Program of China(2017YFB0403604);the Fundamental Research Funds for the Central Universities(No.292021000242);the National Natural Science Foundation of China(Grant No.61571416,61072045,61032006)。
Massive multiple-input multiple-output(MIMO),a technique that can greatly increase spectral efficiency(SE)of cellular networks,has attracted significant interests in recent years.One of the major limitations of massiv...
This work was supported in part by the Chongqing Research Program of Basic Research and Frontier Technology under Grant cstc2019jcyj-msxmX0233;in part by Science and Technology Research Program of Chongqing Education Commission of China under Grant KJQN201901125,Grant KJQN201901103;in part by the Scientific Research Foundation of Chongqing University of Technology under Grant 2019ZD42,Grant 2019ZD63.
With the ever-growing number of base stations(BSs)and user equipments(UEs)in ultra-dense networks(UDN),reusing the same pilot sequences among the cells is inevitable.With pilot reuse scheme,the channel estimation obta...