Search Results for author: Cicek Cavdar

Found 11 papers, 1 papers with code

Multi-agent Reinforcement Learning for Energy Saving in Multi-Cell Massive MIMO Systems

no code implementations5 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.

Multi-agent Reinforcement Learning Total Energy

Nash Soft Actor-Critic LEO Satellite Handover Management Algorithm for Flying Vehicles

no code implementations31 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.

Blocking Management +2

Reliability and Delay Analysis of 3-Dimensional Networks with Multi-Connectivity: Satellite, HAPs, and Cellular Communications

no code implementations18 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.

Cell-Free Massive MIMO in O-RAN: Energy-Aware Joint Orchestration of Cloud, Fronthaul, and Radio Resources

1 code implementation15 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.

Digital Twin Assisted Risk-Aware Sleep Mode Management Using Deep Q-Networks

no code implementations30 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.

Decision Making Management +1

Ultra-Reliable Low-Latency Communication for Aerial Vehicles via Multi-Connectivity

no code implementations12 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.

Cell-Free Massive MIMO in Virtualized CRAN: How to Minimize the Total Network Power?

no code implementations18 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).

Energy and Resource Efficiency by User Traffic Prediction and Classification in Cellular Networks

no code implementations2 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.

feature selection Management +2

Towards a Rigorous Evaluation of Explainability for Multivariate Time Series

no code implementations6 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.

BIG-bench Machine Learning Decision Making +4

Machine Learning assisted Handover and Resource Management for Cellular Connected Drones

no code implementations22 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.

BIG-bench Machine Learning Management

Risk-Aware Resource Allocation for URLLC: Challenges and Strategies with Machine Learning

no code implementations22 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.

BIG-bench Machine Learning Management

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