Cell partitioned M-QAM for semi-blind uplink interference suppression on multicell massive MIMO systems

被引：1

作者：

Matsubara, Kakeru ^{[1
]}

Goto, Yuta ^{[1
]}

Ito, Koki ^{[1
]}

Shimada, Kazushi ^{[1
]}

Maruta, Kazuki ^{[2
]}

Ahn, Chang-Jun ^{[1
]}

机构：

[1] Chiba Univ, Grad Sch Sci & Engn, Inage Ku, 1-33 Yayoi Cho, Chiba 2638522, Japan

[2] Tokyo Inst Technol, Acad Super Smart Soc, Tokyo 1528552, Japan

来源：

IEICE COMMUNICATIONS EXPRESS | 2021年 / 10卷 / 08期

关键词：

channel estimation; pilot contamination; massive MIMO; multicell; decision feedback; sample matrix inversion;

D O I：

10.1587/comex.2021ETL0015

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This letter adopts higher-order modulation scheme than 16QAM to our previously proposed semi-blind uplink interference suppression scheme for multicell multiuser massive MIMO systems. Our semi-blind approach is attained by the decision feedback channel estimation (DFCE) and the sample matrix inversion (SMI) spatial adaptive filtering. However, its efficiency depended on inter-cell interference (ICI), in particular for higher-order QAM. We propose to employ cell partitioning-based M-ary QAM to avoid ICI at the initial condition and verify overall spectral efficiency improvement.

引用

页码：428 / 434

页数：7

共 6 条

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