Joint User Scheduling and Precoding for XL-MIMO Systems With Imperfect CSI

被引：1
|
作者：
Gonzalez-Coma, Jose P. [1 ]
Lopez-Martinez, F. Javier [2 ,3 ]
Castedo, Luis [4 ,5 ]
机构：
[1] Spanish Naval Acad, Def Univ Ctr, Marin 36920, Spain
[2] Univ Granada, Dept Signal Theory Networking & Commun, Granada 18071, Spain
[3] Univ Malaga, Commun & Signal Proc Lab, TELMA Res Inst, Malaga 29010, Spain
[4] Univ A Coruna, Dept Comp Engn, La Coruna 15001, Spain
[5] Univ A Coruna, CITIC Res Ctr, La Coruna 15001, Spain
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2023年 / 12卷 / 10期
关键词：
Antenna arrays; massive MIMO; near-field; precoding; XL-MIMO; MASSIVE MIMO; SELECTION; DESIGN;
D O I：
10.1109/LWC.2023.3281650
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
We propose an algorithm for joint precoding and user scheduling in multiple-input multiple-output systems with extremely-large aperture arrays, assuming realistic channel conditions and imperfect channel estimates. The use of statistical channel state information (CSI) for user scheduling, and a proper selection of the set of users for which CSI is updated allow for obtaining an improved achievable sum spectral efficiency. We also confirm that the effect of imperfect CSI in the precoding vector design and the cost of training must be taken into consideration for realistic performance prediction.
引用
收藏
页码：1657 / 1661
页数：5
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