Browsing by Author "Yeşilkaya, Anıl"
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Channel estimation for visible light communications using neural networks
Yeşilkaya, Anıl; Karatalay, Onur; Öğrenci, Arif Selçuk; Panayırcı, Erdal (Institute of Electrical and Electronics Engineers Inc., 2016)Visible light communications (VLC) is an emerging field in technology and research. Estimating the channel taps is a major requirement for designing reliable communication systems. Due to the nonlinear characteristics of ... -
Flexible LED Index Modulation for MIMO Optical Wireless Communications
Yeşilkaya, Anıl; Purwita, Ardimas Andi; Panayırcı, Erdal; Poor, H. Vincent; Haas, Harald (Institute of Electrical and Electronics Engineers Inc., 2020)The limited bandwidth of optical wireless communication (OWC) front-end devices motivates the use of multipleinput- multiple-output (MIMO) techniques to enhance data rates. It is known that very high multiplexing gains can ... -
MIMO-OFDM Tabanlı Görünür Işıkla Haberleşme
Optik Kablosuz Haberleşme (Optical Wireless Communications (OWC)) sistemleri ve bunun olası bir uygulaması olan Görünür Işıkla Haberleşme (Visible Light Comunications (VLC)), uygulamalarda çok önemli teknik ve operasyonel ... -
Modeling and Equalization of Indoor Visible Light Channnels
Mamus, Atilla; Yeşilkaya, Anıl; Panayırcı, Erdal (IEEE, 2016)In this paper a computationally efficient method is proposed for modeling the indoor visible light communications (VLC) channels using a non-sequential ray tracing technique. We created three dimensional realistic simulation ... -
Modeling of Visible Light Channels and Performance Analysis of ACO-OFDM
Yeşilkaya, Anıl; Alsan, Hüseyin Fuat; Miramirkhani, Farshad; Panayırcı, Erdal; Şenol, Habib; Uysal, Murat (IEEE, 2015)Spectrum scarcity of traditional radio communication has led communication engineers to find new alternatives. Indoor visible light communication is one alternative to solve this problem since its spectrum is not regulated ... -
Optical MIMO-OFDM With Generalized LED Index Modulation
Yeşilkaya, Anıl; Basar, Ertugrul; Miramirkhani, Farshad; Panayırcı, Erdal; Uysal, Murat; Haas, Harald (IEEE-INST Electrical Electronics Engineers Inc, 2017)Visible light communications (VLC) is a promising and uncharted new technology for the next generation of wireless communication systems. This paper proposes a novel generalized light emitting diode (LED) index modulation ... -
Performance of MIMO Enhanced Unipolar OFDM With Realistic Indoor Visible Light Channel Models
Yeşilkaya, Anıl; Miramirkhani, Farshad; Basar, Ertugrul; Panayırcı, Erdal; Uysal, Murat (Institute of Electrical and Electronics Engineers Inc., 2016)Visible light communication (VLC) involves the dual use of illumination infrastructure for high speed wireless access. Designing such optical based communication systems realistic indoor optical channel modeling becomes ... -
Physical Layer Security for Multi-User MIMO Visible Light Communication Systems with Generalized Space Shift Keying
Su, Nugman; Panayırcı, Erdal; Koca, Mutlu; Yeşilkaya, Anıl; Poor, Harold Vincent; Haas, Harald (Institute of Electrical and Electronics Engineers Inc., 2021)We consider the physical layer security (PLS) of multi-user (MU) multiple-input-multiple-output visible light communication (VLC) systems with an eavesdropper (Eve) and propose a novel spatial constellation design technique ... -
Physical-layer security in visible light communications
Yeşilkaya, Anıl; Çoğalan, Tezcan; Erküçük, Serhat; Şadi, Yalçın; Panayırcı, Erdal; Haas, Harald; Poor, Harold Vincent (Institute of Electrical and Electronics Engineers Inc., 2020)Optical wireless communications (OWC) and its potential to solve physical layer security (PLS) issues are becoming important research areas in 6G communications systems. In this paper, an overview of PLS in visible light ... -
Physical-Layer Security With Optical Generalized Space Shift Keying
Panayırcı, Erdal; Yeşilkaya, Anıl; Çoğalan, Tezcan; Poor, H. Vincent; Haas, Harald (Ieee-Inst Electrıcal Electronıcs Engıneers Inc, 2020)Spatial modulation (SM) is a promising technique that reduces inter-channel interference while providing high power efficiency and detection simplicity. In order to ensure the secrecy of SM, precoding and friendly jamming ... -
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 ... -
VLC Sparse Channel Estimation in the Presence of Non-Gaussian Clipping Noise
Yeşilkaya, Anıl; Alsan, Hüseyin Fuat; Panayırcı, Erdal (IEEE, 2016)In this paper a new computationally efficient and high performance channel estimation algorithm is proposed for the indoor visible light communication (VLC) sparse channels in the presence of a clipping noise. The clipping ... -
VLC Sparse Channel Estimation in the Presence of Non-Gaussian Clipping Noise [Gauss Olmayan Kırpma Gürültüsü Altında VLC Seyrek Kanal Kestirimi]
Yeşilkaya, Anıl; Alsan, Hüseyin Fuat; Panayırcı, Erdal (Institute of Electrical and Electronics Engineers Inc., 2016)In this paper a new computationally efficient and high performance channel estimation algorithm is proposed for the indoor visible light communication (VLC) sparse channels in the presence of a clipping noise. The clipping ...