• A path loss model for link budget analysis of indoor visible light communications 

  Miramirkhani, Farshad (Istanbul Univ-Cerrahpasa, 2021-05)

  In the context of beyond 5G indoor communication systems, visible light communications (VLC) has emerged as a viable supplement for existing radio frequency based systems and as an enabler for high data rate communications. ...

• Co-array optimization of CMUT arrays for forward-looking IVUS 

  Tekeş, Coşkun; Karaman, Mustafa; Değertekin, Fahrettin Levent (IEEE, 2009-09)

  The ring annular array structure is a preferred configuration for implementing Forward-Looking IVUS (FLIVUS) catheters as it allows for volumetric imaging as well as use of a guidewire at the center. CMUT technology is ...

• Power control in the cognitive cooperative multiple access channel 

  Kaya, Onur; İşleyen, Murat (IEEE, 2012)

  We extend several encoding and decoding techniques from cooperative communications framework, to a cognitive radio system consisting of a primary user (PU) and a secondary user (SU), sending their messages to a common ...

• An endoscopie imaging system based on a two-dimensional CMUT array: real-time imaging results 

  Wygant, Ira O.; Zhuang, Xuefeng; Yeh, David T.; Vaithilingam, Srikant; Nikoozadeh, Amin; Oralkan, Ömer; Ergün, Arif Sanlı; Karaman, Mustafa; Khuri-Yakub, Butrus Thomas (IEEE, 2005)

  Real-time catheter-based ultrasound imaging tools are needed for diagnosis and image-guided procedures. The continued development of these tools is partially limited by the difficulty of fabricating two-dimensional array ...

• A study on RF/microwave tunable inductor topologies 

  Turgul, Volkan; Nesimoğlu, Tayfun; Yarman, Bekir Sıddık Binboğa (IEEE, 2013)

  Recently, tunable structures gained importance due to frequency agile microwave circuits such as tunable filters, matching networks, amplifiers, etc. that are needed to realize reconfigurable radios. Deploying tunable ...

• Sperm morphology analysis with CNN based algorithms 

  Şavkay, Osman Levent; Cesur, Evren; Yalçın, Müştak Erhan; Tavşanoğlu, Ahmet Vedat (IEEE Computer Society, 2014-08-29)

  In this paper Morphological Analysis part of our proposed computer-aided sperm analysis system (CASA) is simulated and the results beside the algorithm steps are presented. The morphology analysis is simply dealing with ...

• Least minimum symbol error rate based post-distortion for adaptive mobile VLC transmission with receiver selection 

  Miramirkhani, Farshad; Karbalayghareh, Mehdi; Mitra, Rangeet (Elsevier B.V., 2021-08)

  In the context of beyond-5G indoor communication systems, visible light communication (VLC) has emerged as a viable supplement for existing RF-based systems and as an enabler for high datarate communications. However, the ...

• Generic BER analysis of VLC channels impaired by 3D user-mobility and imperfect CSI 

  Reddy Sekhar, K.; Miramirkhani, Farshad; Mitra, Rangeet; Turlapaty, Anish Chand (Institute of Electrical and Electronics Engineers Inc., 2021-07)

  Visible light communications (VLC) has emerged as a high-speed, low-cost, and green supplement for the existing radio frequency (RF) based infrastructures. However, the performance of VLC based systems is found to degrade ...

• Low pass filter design with improved stop-band suppression and synthesis with transformer-free ladders 

  Yıldız, Serkan; Aksen, Ahmet; Kılınç, Sedat; Yarman, Bekir Sıddık Binboğa (John Wiley and Sons Inc, 2021-02)

  A new method to design transformer-free low pass (LP) ladder network with improved stop-band suppression performance is introduced. The parametric representation of back-end impedance of LP filter network is established ...

• FSRFT Based broadband double matching via passband extremums determination 

  Köprü, Ramazan (2018-07-23)

  Fast simplified real frequency technique (FSRFT) is a numerical solver used to solve microwave broadband doublematching (DM) circuit design problems in a much faster and effective manner. Recently, it has been reported ...

• Transformer-less ladder network design with non-minimum impedance functions 

  Yıldız, Serkan; Aksen, Ahmet; Yarman, Bekir Sıddık Binboğa (Institute of Electrical and Electronics Engineers Inc., 2019-11)

  In this study, a new method of design for transformer-less ladders is introduced. It has been shown that, given a non minimum impedance function which includes finite transmission zeros (FTZs) can be synthesized without ...

• Optimisation of pedestrian detection system using FPGA-CPU hybrid implementation for vehicle industry 

  Özcan, Ahmet Remzi; Tavşanoǧlu, Ahmet Vedat (Inderscience Enterprises Ltd., 2019)

  Improved image processing and developing technologies are rapidly expanding the application areas of image processing systems. In recent years, pedestrian detection systems have become one of the major safety technologies ...

• Tel file geometrilerinin sıradüzensel küme bölüntüleme ile spektral kodlaması 

  Konur, Umut; Bayazıt, Uluğ; Ateş, Hasan Fehmi; Gürgen, Sadık Fikret (IEEE, 2007-09-04)

  Çalışmamızda bir dönüşümle elde edilen spektral katsayılar kullanılarak betimlenen tel file geometri bilgisi, katsayılara bütün bit düzlemlerinde en doğru öncelikler atanarak sıradüzensel bir küme bölüntüleme algoritmasıyla ...

• Low complexity least minimum symbol error rate based post-distortion for vehicular VLC 

  Mitra, Rangeet; Miramirkhani, Farshad; Bhatia, Vimal; Uysal, Murat (Institute of Electrical and Electronics Engineers Inc., 2020-10-22)

  Vehicular visible light communications (VLC) has emerged as a viable supplement for high speed next-generation vehicle to vehicle (V2V) communication systems. However, performance of a V2V-VLC link is impaired due to ...

• Improving age of information in random access channels 

  Atabay, Doğa Can; Uysal, Elif; Kaya, Onur (Institute of Electrical and Electronics Engineers Inc., 2020-07)

  We study Age of Information (AoI) in a random access channel where a number of devices try to send status updates over a common medium. Assuming a time-slotted scenario where multiple transmissions result in collision, we ...

• New sufficient criteria for global robust stability of neural networks with multiple time delays 

  Yücel, Eylem; Arık, Sabri (Işık University Press, 2012)

  In this paper, we study global robust asymptotic stability of the equilibrium point for neural networks with multiple time delays. By employing suitable Lyapunov functionals, we derive a set of delay independent sufficient ...

• Gezgin iletişim için uzay-zaman kodlamalı çok-taşıyıcılı tümleşik sistem tasarımı 

  Panayırcı, Erdal; Pusane, Ali Emre; Oğuz, Onur; Aygölü, Hasan Ümit (Tübitak, 2003-04)

  Günümüzde önemi hızla artan gezgin ve telsiz (mobile/wireless) iletişim sistemleri (uydu iletişimi, gezgin radyo, “indoor” iletişim) iletişim kanalının neden olduğu toplamsal Gauss gürültüsüne ek olarak sönümlemeden (fading) ...

• Enerji hasadı yapan kablosuz ağlarda kullanıcı işbirliği ve kaynak tahsisi 

  Kaya, Onur; Ulukuş, Şennur (Tübitak, 2016-11)

  Yeni nesil haberleşme sistemlerinde, pillere ya da şehir elektriğine bağımlı olarak çalışan klasik haberleşme bileşenlerinin yerlerini, enerjilerini çevreden hasat eden, çevreye duyarlı ve uzun kullanım ömrüne sahip ...

• Üç boyutlu göz geometrisinin küme bölüntüleme ile verimli spektral kodlaması 

  Bayazıt, Uluğ; Ateş, Hasan Fehmi (Tübitak, 2008-08)

  3-B nesnelerin görselleştirilmesi uygulamalarında kullanılan tel filelerin ( gözlerin) geometrilerinin sıkıştırılması (DEERİNG, 1995)’deki ön görücü kodlamaya dayanan yöntem ile beraber rağbet gören bir araştırma alanı ...

• Channel modelling and performance limits of vehicular visible light communication systems 

  Karbalayghareh, Mehdi; Miramirkhani, Farshad; Eldeeb, Hossien Badr; Kızılırmak, Refik Çağlar; Sait, Sadiq Q.; Uysal, Murat (IEEE-INST Electrical Electronics Engineers Inc, 2020-07)

  Visible light communication (VLC) has been proposed as an alternative or complementary technology to radio frequency vehicular communications. Front and back vehicle lights can serve as wireless transmitters making VLC a ...

View more