User Assignment with Distributed Large Intelligent Surface (LIS) Systems
Hu, Sha LU ; Chitti, Krishna LU ; Rusek, Fredrik LU and Edfors, Ove LU
(2018)
IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2018
- Abstract
- In this paper, we consider a wireless communication system where a large intelligent surface (LIS) is deployed comprising a number of small and distributed LIS-Units. Each LIS-Unit has a separate signal process unit (SPU) and is connected to a central process unit (CPU) that coordinates the behaviors of all the LIS-Units. With such a LIS system, we consider the user assignments both for sum-rate and minimal user-rate maximizations. That is, assuming $M$ LIS-Units deployed in the LIS system, the objective is to select $K$ ($K\!\leq\!M$) best LIS-Units to serve $K$ autonomous users simultaneously. Based on the nice property of effective inter-user interference suppression of the LIS-Units, the optimal user assignments can be effectively... (More)
- In this paper, we consider a wireless communication system where a large intelligent surface (LIS) is deployed comprising a number of small and distributed LIS-Units. Each LIS-Unit has a separate signal process unit (SPU) and is connected to a central process unit (CPU) that coordinates the behaviors of all the LIS-Units. With such a LIS system, we consider the user assignments both for sum-rate and minimal user-rate maximizations. That is, assuming $M$ LIS-Units deployed in the LIS system, the objective is to select $K$ ($K\!\leq\!M$) best LIS-Units to serve $K$ autonomous users simultaneously. Based on the nice property of effective inter-user interference suppression of the LIS-Units, the optimal user assignments can be effectively found through classical linear assignment problems (LAPs) defined on a bipartite graph. To be specific, the optimal user assignment for sum-rate and user-rate maximizations can be solved by linear sum assignment problem (LSAP) and linear bottleneck assignment problem (LBAP), respectively. The elements of the cost matrix are constructed based on the received signal strength (RSS) measured at each of the $M$ LIS-Units for all the $K$ users. Numerical results show that, the proposed user assignments are close to optimal user assignments both under line-of-sight (LoS) and scattering environments. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/a8da6707-9ec6-4ad8-b4e8-e8720f003e6e
- author
- Hu, Sha
LU
; Chitti, Krishna
LU
; Rusek, Fredrik
LU
and Edfors, Ove
LU
- organization
- publishing date
- 2018-12-20
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- 2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2018
- conference location
- Bologna, Italy
- conference dates
- 2018-09-09 - 2018-09-12
- external identifiers
-
- scopus:85060538856
- ISBN
- 978-1-5386-6009-6
- 978-1-5386-6010-2
- DOI
- 10.1109/PIMRC.2018.8580675
- language
- English
- LU publication?
- yes
- id
- a8da6707-9ec6-4ad8-b4e8-e8720f003e6e
- date added to LUP
- 2017-09-07 09:02:37
- date last changed
- 2024-04-18 02:50:47
@inproceedings{a8da6707-9ec6-4ad8-b4e8-e8720f003e6e,
abstract = {{In this paper, we consider a wireless communication system where a large intelligent surface (LIS) is deployed comprising a number of small and distributed LIS-Units. Each LIS-Unit has a separate signal process unit (SPU) and is connected to a central process unit (CPU) that coordinates the behaviors of all the LIS-Units. With such a LIS system, we consider the user assignments both for sum-rate and minimal user-rate maximizations. That is, assuming $M$ LIS-Units deployed in the LIS system, the objective is to select $K$ ($K\!\leq\!M$) best LIS-Units to serve $K$ autonomous users simultaneously. Based on the nice property of effective inter-user interference suppression of the LIS-Units, the optimal user assignments can be effectively found through classical linear assignment problems (LAPs) defined on a bipartite graph. To be specific, the optimal user assignment for sum-rate and user-rate maximizations can be solved by linear sum assignment problem (LSAP) and linear bottleneck assignment problem (LBAP), respectively. The elements of the cost matrix are constructed based on the received signal strength (RSS) measured at each of the $M$ LIS-Units for all the $K$ users. Numerical results show that, the proposed user assignments are close to optimal user assignments both under line-of-sight (LoS) and scattering environments.}},
author = {{Hu, Sha and Chitti, Krishna and Rusek, Fredrik and Edfors, Ove}},
booktitle = {{2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)}},
isbn = {{978-1-5386-6009-6}},
language = {{eng}},
month = {{12}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
title = {{User Assignment with Distributed Large Intelligent Surface (LIS) Systems}},
url = {{http://dx.doi.org/10.1109/PIMRC.2018.8580675}},
doi = {{10.1109/PIMRC.2018.8580675}},
year = {{2018}},
}