Title
Reconfigurable Intelligent Surface (RIS) Assisted Wireless Coverage Extension: RIS Orientation and Location Optimization
Abstract
Recently, reconfigurable intelligent surfaces (RIS) have attracted a lot of attention due to their capability of extending cell coverage by reflecting signals toward the receiver. In this letter, we analyze the coverage of a downlink RIS-assisted network with one base station (BS) and one user equipment (UE). Since the RIS orientation and the horizontal distance between the RIS and the BS have a significant influence on the cell coverage, we formulate an RIS placement optimization problem to maximize the cell coverage by optimizing the RIS orientation and horizontal distance. To solve the formulated problem, a coverage maximization algorithm (CMA) is proposed, where a closed-form optimal RIS orientation is obtained. Numerical results verify our analysis.
Year
DOI
Venue
2021
10.1109/LCOMM.2020.3025345
IEEE Communications Letters
Keywords
DocType
Volume
Reconfigurable intelligent surface assisted communication,coverage analysis,RIS placement optimization
Journal
25
Issue
ISSN
Citations 
1
1089-7798
16
PageRank 
References 
Authors
0.58
0
5
Name
Order
Citations
PageRank
Shuhao Zeng1412.76
Hongliang Zhang257747.71
Boya Di351844.66
Zhu Han411215760.71
Lingyang Song53674238.94