Browsing Tez Koleksiyonu by Author "Panayırcı, Erdal"
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Analysis of visible light communation sytems and adaptive equalization effects
Mamus, Atilla (Kadir Has Üniversitesi, 2015)Communication by means of visible light is a newly developing technology that has been brought up as an alternative to the current electromagnetic based communication systems. The recently conducted studies led to the use ... -
Femtocell design for data communications in mobile networks
Cogalan, Tezcan (Kadir Has Üniversitesi, 2013)in this thesis game theoretic utility-based adaptive power control algorithm for uplink of femtocell networks is performed for mitigation of interference in two different ways. The first one is allocation of femtocell ... -
Modelling of visible light channels and performance analysis for optical ofdm systems
Alsan, Hüseyin Fuat (Kadir Has Üniversitesi, 2016)This work is concerned with a challenging problem of modeling and simulation of visible light communications (VLC) channels for optical wireless communication (OWC) systems. A proper channel model for VLC is absent in the ... -
New channel estimation techniques for cooperative underwater acoustic OFDM systems
Mustafa, Erdoğan (Kadir Has Üniversitesi, 2013)Cooperative underwater acoustic communication systems come into prominence in recent years. Since underwater channels are sparse and additive noise entering the system is colored Gaussian noise it is very difficult to ... -
Optimal rate and power allocation algorithm in tdd-ofdm based two-tier femtocell networks
Altabaa, Mhd Tahssin (Kadir Has Üniversitesi, 2014)People nowadays are witnessing the acceleration of development of electronics. The new technologies of electronic devices has made mobile phones smarter and more technologically advanced, where they support software platforms ... -
Phase noise estimation for wireless communication systems
Kaleli, Burç Arslan (Kadir Has Üniversitesi, 2011)in wireless communication systems information symbols are transmitted through a communication channel which are affected many degradation factors. Besides fading and multipath effect of channel transmitted symbols are ... -
Physical layer security and channel estimation in optical generalized index-modulated ofdm system
Okumuş, Furkan Batuhan (Kadir Has Üniversitesi, 2022-01)Visible light communication (VLC) is a promising and not completely discovered technology for next-generation wireless communication systems. In this thesis, gen eralized LED index modulation (GLIM-OFDM), which is a new ... -
Physical layer security in the visible light communications systems
Bektaş, Ekin Başak (Kadir Has Üniversitesi, 2020)With the rapid developments in technology in recent years, the need for fast and secure access to information has been increasing day by day. With this increasing demand, the radio frequency (RF) band which used for wireless ... -
SISO - MIMO applications and analysis of visible light communications systems
Yeşilkaya, Anıl (Kadir Has Üniversitesi, 2016)Rapid development in technology and increasing necessity to reach information instantaneously saturates RF bands rapidly. Because of that, it can be seen that we are gradually approaching upper limits of the band. It can ... -
Sparse channel estimation and data detection algorithms for ofdm-based underwater acoustic communication systems
Altabbaa, Mhd Tahssin (Kadir Has Üniversitesi, 2018)Communication over acoustic signals in underwater results into a multi-scale multilag channels which occurs due to the multipath propagation. Hence a robust channel estimation technique has to be present at the receiver ...