Tolga Çiloğlu

E-mail

ciltolga@metu.edu.tr

Department

Department of Electrical and Electronics Engineering

ORCID

0000-0002-9703-5861

Scopus Author ID

16229315800

Web of Science Researcher ID

A-9650-2008

Nonlinear Distortion Correlation Aware Power Allocation for Massive MIMO Systems Salman, Murat Babek; Bjornson, Emil; Güvensen, Gökhan Muzaffer; Çiloğlu, Tolga (2024-01-01) This article provides a comprehensive analysis aimed at addressing the impact of power amplifier nonlinearities on massive multiple-input multiple-output (MIMO) communication systems. Specifically, we derive a closed-form ...
Low complexity nonlinear detection for multiuser hybrid MIMO systems and performance analysis Salman, Murat Babek; Güvensen, Gökhan Muzaffer; Çiloğlu, Tolga (2023-10-01) This paper proposes an analytical framework and a system of distortion-aware receiver structures for single-carrier uplink hybrid beamforming-based multiple-input-multiple-output (MIMO) channels. Proposed single-user proce...
Analytical Nonlinear Distortion Characterization for Frequency-Selective Massive MIMO Channels Salman, Murat Babek; Björnson, Emil; Güvensen, Gökhan Muzaffer; Çiloğlu, Tolga (2023-01-01) Nonlinear distortion stemming from low-cost power amplifiers may severely affect wireless communication performance through out-of-band (OOB) radiation and in-band distortion. The distortion is correlated between different...
Investigation of Effects of PA Non-linearities on the Fully Digital Massive MIMO Systems Salman, Murat Babek; Güvensen, Gökhan Muzaffer; Çiloğlu, Tolga (2020-01-01) In this study, effects of power amplifier (PA) non-linearities on the performance of fully digital massive MIMO systems are studied. Fully digital systems have been studied extensively in the literature. However, research ...
Gradient controlled improved proportionate affine projection sign algorithm Gradyan kontrollü geliştirilmiş orantili afin izdüşümlü işaret algoritmasi Salman, Murat Babek; Çiloğlu, Tolga (2018-07-05) Recently, proportionate adaptive filters are commonly used in the acoustic echo cancellation problems. In proportionate adaptive filters, for each coefficient a step-size which proportional to magnitude of that coefficient...
Gradient controlled improved proportionate affine projection sign algorithm Çiloğlu, Tolga (null; 2018-05-05) Recently, proportionate adaptive filters are commonly used in the acoustic echo cancellation problems. In proportionate adaptive filters, for each coefficient a step-size which proportional to magnitude of that coefficient...
Nonlinear interactive source-filter models for speech KOÇ, Turgay; Çiloğlu, Tolga (2016-03-01) The linear source-filter model of speech production assumes that the source of the speech sounds is independent of the filter. However, acoustic simulations based on the physical speech production models show that when the...
Removing Grating Lobes in Sparse Sensor Arrays with a Nonlinear Approach Epcacan, Erdal; Çiloğlu, Tolga; Candan, Çağatay; Mehmetcik, Erdal (2015-05-19) Two of the most important criteria for a sensor array beam-pattern are beamwidth and side-lobe level. A narrower beamwidth means a better angular resolution and well separation of close sources. The beamwidth of a sensor a...
Enhanced Modelling of Guitar Distortion Zeki, Engin; Çiloğlu, Tolga (2015-05-19) Digital audio effects are used by many electric guitar players. These effects help players to find their desired tones and sounds. For the modelling of main nonlinear guitar effects, distortion and overdrive, this paper in...
Multimodal concept detection in broadcast media: KavTan SOYSAL, Medeni; Alatan, Abdullah Aydın; TEKİN, Mashar; ESEN, Ersin; SARACOĞLU, Ahmet; Acar, Banu Oskay; Ozan, Ezgi Can; Ates, Tugrul K.; SEVİMLİ, Hakan; SEVİNÇ, Muge; ATIL, Ilkay; Ozkan, Savas; Arabaci, Mehmet Ali; TANKIZ, Seda; KARADENİZ, Talha; ÖNÜR, Duygu; SELÇUK, Sezin; Alatan, A. Aydin; Çiloğlu, Tolga (Springer Science and Business Media LLC, 2014-10-01) Concept detection stands as an important problem for efficient indexing and retrieval in large video archives. In this work, the KavTan System, which performs high-level semantic classification in one of the largest TV arc...

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