no code implementations • 5 Feb 2024 • Tianzhang Cai, Qichen Wang, Shuai Zhang, Özlem Tuğfe Demir, Cicek Cavdar
We develop a multi-agent reinforcement learning (MARL) algorithm to minimize the total energy consumption of multiple massive MIMO (multiple-input multiple-output) base stations (BSs) in a multi-cell network while preserving the overall quality-of-service (QoS) by making decisions on the multi-level advanced sleep modes (ASMs) and antenna switching of these BSs.
no code implementations • 31 Jan 2024 • Jinxuan Chen, Mustafa Ozger, Cicek Cavdar
Compared with the terrestrial networks (TN), which can only support limited coverage areas, low-earth orbit (LEO) satellites can provide seamless global coverage and high survivability in case of emergencies.
no code implementations • 18 Aug 2023 • Fateme Salehi, Mustafa Ozger, Cicek Cavdar
Based on the simulation results, we find out that even with very efficient interference mitigation, MC is the key enabler for safe remote piloting operations.
1 code implementation • 15 Jan 2023 • Özlem Tuğfe Demir, Meysam Masoudi, Emil Björnson, Cicek Cavdar
In this paper, we explore the performance and power consumption of cell-free massive MIMO technology in comparison with traditional small-cell systems, in the virtualized O-RAN architecture.
no code implementations • 30 Aug 2022 • Meysam Masoudi, Ebrahim Soroush, Jens Zander, Cicek Cavdar
In this study, we model the problem of BS energy saving utilizing multiple sleep modes as a sequential MDP and propose an online traffic-aware deep reinforcement learning approach to maximize the long-term energy saving.
no code implementations • 12 May 2022 • Fateme Salehi, Mustafa Ozger, Naaser Neda, Cicek Cavdar
In our numerical study, we find that providing requirements by single connectivity to AVs is very challenging due to the line-of-sight (LoS) interference and reduced gains of downtilt ground base station (BS) antenna.
no code implementations • 18 Feb 2022 • Özlem Tuğfe Demir, Meysam Masoudi, Emil Björnson, Cicek Cavdar
This paper proposes a new cell-free architecture that can be implemented on top of a virtualized cloud radio access network (V-CRAN).
no code implementations • 2 Nov 2021 • Amin Azari, Fateme Salehi, Panagiotis Papapetrou, Cicek Cavdar
There is a lack of research on the analysis of per-user traffic in cellular networks, for deriving and following traffic-aware network management.
no code implementations • 6 Apr 2021 • Rohit Saluja, Avleen Malhi, Samanta Knapič, Kary Främling, Cicek Cavdar
Machine learning-based systems are rapidly gaining popularity and in-line with that there has been a huge research surge in the field of explainability to ensure that machine learning models are reliable, fair, and can be held liable for their decision-making process.
no code implementations • 22 Jan 2020 • Amin Azari, Fayezeh Ghavimi, Mustafa Ozger, Riku Jantti, Cicek Cavdar
Here, we first present the major challenges in co-existence of terrestrial and drone communications by considering real geographical network data for Stockholm.
no code implementations • 22 Dec 2018 • Amin Azari, Mustafa Ozger, Cicek Cavdar
The results further provide insights on the benefits of leveraging intelligent RRM, e. g. a 75% increase in data rate with respect to the conservative design approach for the scheduled traffic is achieved, while the 99. 99% reliability of both scheduled and nonscheduled traffic types is satisfied.