Publications

Cell selection algorithm performance for Tetra trunk

Bu makalede, telsiz haberleşme sistemi Tetra trunk standardı için, kullanıcıların hesapladığı C1 yol kaybı parametresi ve baz istasyonları tarafından yayınlanan baz istasyonunun yeterli kapasiteye sahip olduğu bilgisi kullanılarak, kullanıcıların en uygun baz istasyonunu ile haberleşmesini sağlayan hücre seçim algoritması önerilmiştir. Kullanıcıların hareketsiz olduğu ortamda, hücre içerisindeki farklı sayıda kullanıcılara göre benzetim sonuçları elde edilmiştir. Önerilen hücre seçim algoritmasının mesafe tabanlı hücre seçim algoritmasına göre kullanıcıların baz istasyonlarına daha adil bir şekilde dağılım sağladığı ve bağlanan kullanıcıların daha iyi sinyal karışım ve gürültü oranı değerlerine sahip oldukları gözlemlenmişstir.
Karataş, B. Özbek, E. D. Bardak and İ Sönmez, "Cell selection algorithm performance for Tetra trunk," 2016 24th Signal Processing and Communication Application Conference (SIU), Zonguldak, 2016, pp. 373-376.

http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7495755

Load Based Cell Selection Algorithm for Tetra based Professional Mobile Radio

This paper proposes a cell selection algorithm for Tetra based professional mobile radio systems where the users select the base station according to the proposed utility value. This utility value is determined by considering both cell load and received signal strength indicator. The main aim of the proposed method is to distribute the users in a balanced way among base stations. Based on performance evaluations, we illustrate that the proposed cell selection algorithm gives better results than Tetra based cell selection method in a manner of distribution of the users over all BSs while reducing waiting time for establishing connection.
Azad Karataş, Izmir Institute of Technology, Berna Özbek, Izmir Institute of Technology, 
İlker Sönmez, Aselsan A.Ş., Sıdıka Bengür, Aselsan A.Ş.

http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7818782

Projects

Cell Selection Algorithms for Tetra Trunk Systems

Different type of cell selection algorithms applied for various scenarios.

E2E Throughput and Delay Performances in LTE Networks

End-to-end throughput and delays are analyzed and plotted for the different number of users and base stations.

RF Data Transceiver

* Transmitter and receiver for RF channel that connects serial ports of two computers in one direction.
* Modulates/demodulates RF signal.
* Maximum transmission rate is 9600 baud.
* Minimum transmission distance is 5 meters.

Link Budget Calculation

My main goal is to calculate the BER values according to different modulation and coding techniques.

Convolutional Encoding and Decoding

The main objective of this project is to analyze the BER performance of uncoded and convolutional encoded 16QAM in AWGN channels.