Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 169-180 |
| Seitenumfang | 12 |
| Fachzeitschrift | Physical communication |
| Jahrgang | 31 |
| Frühes Online-Datum | 30 Apr. 2018 |
| Publikationsstatus | Veröffentlicht - Dez. 2018 |
Abstract
Resource allocation and interference management are two main issues that need to be carefully addressed in visible light communication (VLC) systems. In this paper, we propose a resource allocation scheme that can also handle the inter-cell interference in a multi-user VLC system that employs orthogonal frequency division multiple access (OFDMA). Particularly, we suggest dividing the cell coverage into two non-overlapping zones and performing a two-step resource allocation process, in which each step corresponds to a different level of allocating resources, i.e., zone and user levels. We initially define both zones in terms of the physical area and the amount of allocated resources and we investigate the impact of illumination requirements on defining both zones. Through simulations, we evaluate the performance of the proposed scheme in terms of the area spectral efficiency and the fairness level between the two zones. We show that both performance measures can be potentially enhanced by carefully setting a certain design parameter that reflects the priority level of the users located in the region around the cell center, denoted as Zone 0, in terms of the achievable rate. We further eventuate the system performance in a realistic transmission scenario using a simulation tool.
ASJC Scopus Sachgebiete
- Ingenieurwesen (insg.)
- Elektrotechnik und Elektronik
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in: Physical communication, Jahrgang 31, 12.2018, S. 169-180.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Resource allocation and interference management in OFDMA-based VLC networks
AU - Hammouda, Marwan
AU - Vegni, Anna Maria
AU - Haas, Harald
AU - Peissig, Jürgen
N1 - Funding information: This work was supported by the German Research Foundation (DFG) -FeelMaTyc (329885056).
PY - 2018/12
Y1 - 2018/12
N2 - Resource allocation and interference management are two main issues that need to be carefully addressed in visible light communication (VLC) systems. In this paper, we propose a resource allocation scheme that can also handle the inter-cell interference in a multi-user VLC system that employs orthogonal frequency division multiple access (OFDMA). Particularly, we suggest dividing the cell coverage into two non-overlapping zones and performing a two-step resource allocation process, in which each step corresponds to a different level of allocating resources, i.e., zone and user levels. We initially define both zones in terms of the physical area and the amount of allocated resources and we investigate the impact of illumination requirements on defining both zones. Through simulations, we evaluate the performance of the proposed scheme in terms of the area spectral efficiency and the fairness level between the two zones. We show that both performance measures can be potentially enhanced by carefully setting a certain design parameter that reflects the priority level of the users located in the region around the cell center, denoted as Zone 0, in terms of the achievable rate. We further eventuate the system performance in a realistic transmission scenario using a simulation tool.
AB - Resource allocation and interference management are two main issues that need to be carefully addressed in visible light communication (VLC) systems. In this paper, we propose a resource allocation scheme that can also handle the inter-cell interference in a multi-user VLC system that employs orthogonal frequency division multiple access (OFDMA). Particularly, we suggest dividing the cell coverage into two non-overlapping zones and performing a two-step resource allocation process, in which each step corresponds to a different level of allocating resources, i.e., zone and user levels. We initially define both zones in terms of the physical area and the amount of allocated resources and we investigate the impact of illumination requirements on defining both zones. Through simulations, we evaluate the performance of the proposed scheme in terms of the area spectral efficiency and the fairness level between the two zones. We show that both performance measures can be potentially enhanced by carefully setting a certain design parameter that reflects the priority level of the users located in the region around the cell center, denoted as Zone 0, in terms of the achievable rate. We further eventuate the system performance in a realistic transmission scenario using a simulation tool.
KW - Fairness
KW - Inter-cell interference
KW - LiFi
KW - OFDMA
KW - Spotlighting
KW - Visible light communications
UR - http://www.scopus.com/inward/record.url?scp=85046793609&partnerID=8YFLogxK
U2 - 10.1016/j.phycom.2018.04.014
DO - 10.1016/j.phycom.2018.04.014
M3 - Article
AN - SCOPUS:85046793609
VL - 31
SP - 169
EP - 180
JO - Physical communication
JF - Physical communication
SN - 1874-4907
ER -