Interference Management in Cognitive Radio Networks; funded by Presidency of Defense Industries, Turkey-(2017-2019)
This project includes reducing interference in military communications utilizing efficient spectrum allocation for all terminals. In addition, the projects aim to support different location and network topologies without spectrum planning in military communications. Flexibility to use in countries’ borders or conflict zones is aimed at designing next-generation communication systems that can be configured dynamically.
Efficient IoT System Design Through Energy Harvesting; funded by İTÜ Vodafone Future Lab, (2018-2019)
Powering the IoT devices is an important issue in the 5G and beyond. Conventional batteries won’t work in the IoT applicaitons because of their various shapes and sizes and low power requirements. Therefore, power sources for IoT devices will need several key features of their own like: small/thin size and flexible shape and wireless connectivity which ables them to charge a device on the go, easy to use anywhere. A promising approach of power source alternatives for the IoT is harvesting energy from radio frequencies.
Optimization of a mobile network based on most used sites / routes; funded by İTÜ Vodafone Future Lab, (2018-2019)
Using the signaling information which contains the handover attempts and successes between the spurge and destination cells, it is possible to form a pattern of sites and cells in a matrix, that indicate the typical route that mobility, service and capacity needs to be sured for the smooth operation of the mobile network. This is valid for all the technologies and also for voice and data, even though voice will benefit the most from this type of optimization. Using machine learning and forecasting, it is possible to predict the traffic that can be carried by new sites that can be introduced in the network as well as the amount of traffic lost due to the loss of a site/ radio/ cell.
Wireless energy harvesting has been regarded as a promising approach to extend the life-time of a wireless communication systems. In energy harvesting (EH), energy is obtained by wind, solar, vibration and etc. Thus, the harvesting energy transformed to electricity and can be used by the nodes. However, the aforementioned traditional EH methods are not always available. RF EH has been emerged as a key promising technique which enables the wireless systems to harvests energy from the incoming signals in the environment. This energy is available as a dedicated or ambient and can be used in through the whole day.
Network Optimization Based on Intensive Cellular Transitions in Mobile Communication Networks; funded by İTÜ BAP, (2019-2020)
Further information is needed to enable a fully autonomous and flexible network to enable future next-generation networks to overcome existing limitations and address the problems of existing cellular systems. This project focuses on the learning behavior of solutions of self-healing networks (SHN). The main issue addressed in this project is to dynamically adjust network parameters for detecting heavily used transitions in a cellular network in order to prevent interruption of service and uninterrupted communication. For the purpose of SHN, a review of common machine learning techniques encountered in cellular networks will be presented, as well as machine learning solutions. Within the scope of this project, it is planned to receive data from a telecommunication operator and if this is not possible, it is aimed to continue the new researches in the field of self-optimizing networks that can be implemented in the near future by using algorithms developed on synthetic data.
The algorithm has been developed and performance analyzes have been performed for the unmanned aerial vehicles (UAV) to perform image processing assisted landing.
[Research Project , funded by TUSAŞ/TAI]
[funded by ASELSAN Inc-(2017-2018)]
The goal of the project is to design a new generation TV unit with the partnership of Arçelik AŞ, which senses home-environment sounds and notifies the user visually especially for hearing-impaired persons.
[ SAN-TEZ Project, Funded by the Ministry of Science, Industry and Technology-(2014 – 2015)]
LTE eNodeB Performance Measurement, Software Development of Self-Configurable Networks: The role of handover parameters in improving the energy efficiency of cellular networks is analyzed, and the negative effects of handover failure (HOF) and ping-pong (PP) rate are investigated. The network performance of the new algorithm is explored in terms of real vehicular traffic data and state-of-the-art specifications of eNodeBs.
[Funded by Scientific and Technological Research Council of Turkey, TUBITAK under Grant TEYDEB Project No.3160085-(2017 – 2018)]
[Umbrella Project, funded by Istanbul Technical University-(2015 – 2016)]
We have participated in the development and implementation of a multi-sensor landmine detection system. We have worked on feature extraction techniques and fuzzy decision problem based on the Neyman-Pearson criterion. We have assumed responsibilities on the sensor fusion processor.
[ Funded by Ministry of Defense]
Detection and Parameter Extraction of Low Probability of Intercept Radar Waveforms by Time-Frequency Signal Processing
Conventional pulsed radar systems are easily detected by advanced electronic support systems and radar warning receivers due to their high-powered transmissions. As the use of low probability of intercept (LPI) radar waveforms provides significant advantages in radar systems, we investigate LPI radar waveform detection and parameter extraction in this project. The proposed novel analysis techniques are implemented on the FPGA.
[Research Project of no. 113E117, funded by The Scientific and Technological Research Council of Turkey (TÜBİTAK)-(2013 – 2015)]
High-resolution time-frequency distributions on the application of spread-spectrum communications and dissimilarity measures and retrieval on time-frequency distributions
High-resolution time-frequency representations are developed and applied to various communication applications. Moreover, fractional Fourier domain adaptive filter has been designed and original results in the discrete form of the transform are obtained. Signal retrieval and classification problem is also investigated by time-frequency signal processing.
[ Research Project of no. 105E078, Funded by The Scientific and Technological Research Council of Turkey (TÜBİTAK)-(2006 – 2013)]