• New channel estimation techniques for cooperative underwater acoustic OFDM systems 

  Authors : Mustafa, Erdoğan
  Publisher and Date :

  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 ...
  
  

• Pilot assisted channel estimation for asymmetrically clipped optical OFDM over visible light channels 

  Authors : Dogan, Hakan; Şayli, Osman; Panayirci, Erdal
  Publisher and Date : (Institute of Electrical and Electronics Engineers Inc., 2017)

  The Visible Light Communication(VLC) has drawn significant attention recently for wireless communication in addressing the performance limitations of wireless systems due to the scarcity of bandwidth. In VLC system the ...
  
  

• Extending the lifetime of WSNs with Maximum Energy Selection Algorithm (MESA) 

  Authors : Cengiz, Korhan; Dağ, Tamer
  Publisher and Date : (Institute of Electrical and Electronics Engineers Inc., 2017)

  The limited battery supply of a sensor node is one of the most important factors that limit the lifetime of the WSNs. As a consequence increasing the lifetime of WSNs through energy efficient mechanisms has become a ...
  
  

• Busy tone based power control for coordination of IEEE 802.11af and 802.22 system [IEEE 802.11af ve 802.22 Sistemlerinin Uyumlu Çalışmaları için Meşgul Ton Tabanlı Güç Kontrolü] 

  Authors : Ulgen, Oguz; Erküçük, Serhat; Karatalay, Onur; Baykaş, Tunçer
  Publisher and Date : (Institute of Electrical and Electronics Engineers Inc., 2017)

  In this paper a new power control algorithm based on busy tone approach has been proposed for the coordination of IEEE 802.22 and IEEE 802.11af systems in TV white space. Different from the earlier studies in addition to ...
  
  

• Sparse Channel Estimation for Space-Time Block Coded OFDM-Based Underwater Acoustic Channels 

  Authors : Altabbaa, Mhd Tahssin; Ogrenci, Arif Selcuk; Panayirci, Erdal; Poor, Harold Vincent
  Publisher and Date : (Institute of Electrical and Electronics Engineers Inc., 2018)

  Communication over acoustic signals underwater results in multi-scale multi-lag channels due to multipath propagation. Hence a robust channel estimation technique has to be present at the receiver. In this paper assuming ...
  
  

• VLSI implementation of GRBF (Gaussian Radial Basis Function) networks 

  Authors : Çevikbaş, I. Can; Öǧrenci, Arif Selçuk; Dündar, Günhan; Balkır, Sina
  Publisher and Date : (IEEE, 2000)

  A GRBF network is designed for VLSI implementation. Building blocks of the network consist mainly of analog circuits: op-amp multiplier multiplying DAC (digital to analog converter) floating resistor summer and exponentiator. ...
  
  

• Parameter quantization effects in Gaussian potential function neural networks 

  Authors : Karakuş, Erkan; Öǧrenci, Arif Selçuk; Dündar, Günhan
  Publisher and Date : (World Scientific and Engineering Academy and Society, 2001)

  In hardware implementations of Gaussian Potential Function Neural Networks (GPFNN) deviation from ideal network parameters is inevitable because of the techniques used for parameter storage and implementation of the functions ...
  
  

• Edge detection using steerable filters and CNN 

  Authors : Özmen, Atilla; Akman, Emir Tufan
  Publisher and Date : (European Signal Processing Conference EUSIPCO, 2002)

  This paper proposes a new approach for edge detection using steerable filters and cellular neural networks (CNNs) where the former yields the local direction of dominant orientation and the latter provides iterative ...
  
  

• A broadband microwave amplifier design by means of immittance based data modelling tool 

  Authors : Kilinç, Ali; Pinarbaşi, Haci; Şengül, Metin Y.; Yarman, Binboǧa Sıddık
  Publisher and Date : (IEEE, 2002)

  In this paper a practical broadband microwave amplifier design algorithm is introduced utilizing the immittance data-modelling tool. In the course of design first the optimum input and output terminations for the active ...
  
  

• Selective liquid-liquid extraction of mercuric ions by octyl methane sulfonamide 

  Authors : Bicak, Niyazi; Sungur, Sana Kutun; Gazi, Mustafa; Tan, Nükhet
  Publisher and Date : (2003)

  N-octyl methane sulfonamide (OMSA) has been demonstrated to be a very efficient reagent for selective extraction of Hg(II) ions from aqueous solutions. The extraction bases on rapid reaction of OMSA with Hg(II) ions yielding ...
  
  

• Sliding mode controller solution for the shallow submerged operation ok a submarine 

  Authors : Demirci, Ufuk; Kerestecioǧlu, Feza
  Publisher and Date : (IFAC Secretariat, 2003)

  In this paper a submarine controller is presented which can accommodate the sea wave effects on a submarine a(shallow water operation. Sliding mode method is implemented in a way that the robustness of the controller ...
  
  

• Real frequency design of Pi and T matching networks with complex terminations 

  Authors : Şengül, Metin Y.; Yeşilyurt, Gökmen
  Publisher and Date : (Institute of Electrical and Electronics Engineers Inc., 2018)

  In this paper real frequency design of Pi and T matching networks with complex terminations is studied. Generally the generator and load termination impedances are given as measurement values. So they can be regarded as a ...
  
  

• Pilot-aided bayesian MMSE channel estimation for OFDM systems: Algorithm and performance analysis 

  Authors : Şenol, Habib; Cirpan, Hakan Ali; Panayirci, Erdal
  Publisher and Date : (2004)

  This paper proposes a computationally efficient pilot-aided minimum mean square error (MMSE) channel estimation algorithm for OFDM systems. The proposed approach employs a convenient representation of the discrete multipath ...
  
  

• An open software architecture of neural networks: Neurosoft 

  Authors : Öǧrenci, Arif Selçuk; Arsan, Taner; Saydam, Tuncay
  Publisher and Date : (2004)

  Software architecture of generic distributed neural networks and its relevant information model have been developed. Principles of on-line architecture building training controlling (managing) and topological optimization ...
  
  

• Power control and resource allocation in TDD-OFDM based femtocell networks with interference 

  Authors : Altabbaa, Mhd Tahssin; Arsan, Taner; Panayirci, Erdal
  Publisher and Date : (Institute of Electrical and Electronics Engineers Inc., 2018)

  Femtocell technology is a promising solution for different dilemmas in cellular networks. In femtocell power control the interference experienced by the network is divided into two main tiers according to the type of network ...
  
  

• A low-complexity KL expansion-based channel estimator for OFDM systems 

  Authors : Şenol, Habib; Cirpan, Hakan Ali; Panayirci, Erdal
  Publisher and Date : (2005)

  This paper first proposes a computationally efficient pilot-aided linear minimum mean square error (MMSE) batch channel estimation algorithm for OFDM systems in unknown wireless fading channels. The proposed approach employs ...
  
  

• Fault tolerant control with re-configuring sliding-mode schemes 

  Authors : Demirci, Ufuk; Kerestecioğlu, Feza
  Publisher and Date : (2005)

  In this paper a controller design method for linear MIMO systems is presented which a sliding mode controller is reconfigured in case of system faults. Faults are detected with the residual vector generated from a standard ...
  
  

• Fault estimation of Trakya and Marmara Sea regions using 2D Gabor filtering [2 boyutlu gabor filtre yöntemi uygulayarak Trakya ve Marmara denizindeki fay hatlarının saptanması] 

  Authors : Özmen, Atilla; Erdoğan, Didem; Uçan, Osman Nuri; Albora, Ali Muhittin
  Publisher and Date : (2005)

  In this paper we have applied 2D Gabor filtering to gravity and magnetic anomalies in estimation of discontinuities. Gabor filtering is an effective separation method compared to others having steerable and frequency ...
  
  

• Signature verification using conic section function neural network 

  Authors : Şenol, Canan; Yildirim, Tülay
  Publisher and Date : (2005)

  This paper presents a new approach for off-line signature verification based on a hybrid neural network (Conic Section Function Neural Network-CSFNN). Artificial Neural Networks (ANNs) have recently become a very important ...
  
  

• Support vector regression for surveillance purposes 

  Authors : Özer, Sedat; Cirpan, Hakan Ali; Kabaoǧlu, Nihat
  Publisher and Date : (Springer Verlag, 2006)

  This paper addresses the problem of applying powerful statistical pattern classification algorithm based on kernel functions to target tracking on surveillance systems. Rather than directly adapting a recognizer we develop ...
  
  

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