南方科技大学知识苑(SUSTech KC): Symbol-Level Precoding Made Practical for Multi-Level Modulations via Block-Level Rescaling

题名	Symbol-Level Precoding Made Practical for Multi-Level Modulations via Block-Level Rescaling
作者	Li，Ang 1; Liu，Fan2 ; Liao，Xuewen 1; Shen，Yuanjun 3; Masouros，Christos 3
DOI	10.1109/SPAWC51858.2021.9593254
发表日期	2021
ISSN	1948-3244
ISBN	978-1-6654-2852-1
会议录名称	IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
卷号	2021-September
页码	71-75
会议日期	27-30 Sept. 2021
会议地点	Lucca, Italy
摘要	In this paper, we propose an interference exploitation symbol-level precoding (SLP) method for multi-level modulations via an in-block power allocation scheme to greatly reduce the signaling overhead. Existing SLP approaches require the symbol-level broadcast of the rescaling factor to the users for correct demodulation, which hinders the practical implementation of SLP. The proposed approach allows a block-level broadcast of the rescaling factor as done in traditional block-level precoding, greatly reducing the signaling overhead for SLP without sacrificing the performance. Our derivations further show that the proposed in-block power allocation enjoys an exact closed-form solution and thus does not increase the complexity at the base station (BS). In addition to the significant alleviation of the signaling overhead validated by the effective throughput result, numerical results demonstrate that the proposed power allocation approach also improves the error-rate performance of the existing SLP. Accordingly, the proposed approach enables the practical use of SLP in multi-level modulations.
关键词	constructive interference MIMO multi-level modulations signaling overhead symbol-level precoding
学校署名	其他
语种	英语
相关链接	[Scopus记录]
收录类别	EI
EI入藏号	20220311473759
EI主题词	Cost reduction ; Signaling
Scopus记录号	2-s2.0-85122801228
来源库	Scopus
全文链接	https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9593254
引用统计	被引频次[WOS]：5
成果类型	会议论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/314134
专题	工学院_电子与电气工程系
作者单位	1.Xi'an Jiaotong University,School Of Information And Communications Engineering,Xi'An,China 2.Southern University Of Science And Technology,Department Of Electrical And Electronic Engineering,Shenzhen,China 3.University College London,Department Of Electronic And Electrical Engineering,London,United Kingdom
推荐引用方式 GB/T 7714	Li，Ang,Liu，Fan,Liao，Xuewen,et al. Symbol-Level Precoding Made Practical for Multi-Level Modulations via Block-Level Rescaling[C],2021:71-75.