Browsing by Author "Panayırcı, Erdal"
Now showing items 1-20 of 150
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3D indoor positioning with spatial modulation for visible light communications
Sen, Umit; Yesilirmak, Yalin Evrim; Bayman, Irem Ozgur; Arsan, Taner; Panayırcı, Erdal; Stevens, Nobby (Elsevier, 2023)In this paper, a novel three-dimensional (3D) indoor visible light positioning (VLP) algorithm is proposed based on the spatial modulation (SM) and its error performance assessed as compared to the conventional received ... -
3D-printed actuator-based beam-steering approach for improved physical layer security in visible light communication
Erdem, Mehmet Can; Gurcuoglu, Oguz; Panayırcı, Erdal; Kurt, Gunes Karabulut; Ferhanoglu, Onur (Optica Publishing Group, 2022)In this study, we present the design, manufacture, and implementation of a 3D-printed lens scanner-based beam steering for use in visible light communication (VLC) applications. The 5 cm x 5 cm scanner is designed for ... -
Advanced signal processing algorithms for wireless communications
Panayırcı, Erdal; Çırpan, Hakan Ali (Springer-Verlag Berlin, 2006)Traditional wireless technologies are not well suited to meet the extremely demanding requirements of providing the very high data rates with the ubiquity mobility and portability characteristic of cellular systems. Some ... -
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 ... -
Blind phase noise estimation and data detection based on SMC technique and unscented filtering
In this paper, a computationally efficient algorithm is presented for tracing phase noise with linear drift and blind data detection jointly, based on a sequential Monte Carlo(SMC) method. Tracing of phase noise is achieved ... -
Blind-phase noise estimation in OFDM systems by sequential Monte Carlo method
Panayırcı, Erdal; Çırpan, Hakan Ali; Moeneclaey, Marc; Noels, Nele (John Wiley and Sons Ltd, 2006)One of the main drawbacks of orthogonal frequency division multiplexing (OFDM) systems is the phase noise (PN) caused by the oscillator instabilities. Unfortunately due to the PN the most valuable feature namely orthogonality ... -
Breaking the Performance Gap of Fully and Semi-Supervised Learning in Electromagnetic Signature Recognition
Wang, H.; Wang, Q.; Chen, L.; Fu, G.; Liu, X.; Dong, Z.; Panayırcı, Erdal (Institute of Electrical and Electronics Engineers Inc., 2023)Intelligent electromagnetic signature recognition is one of the key technologies in Internet-of-Things (IoT) device connection, which can improve system security and speed up the authentication process. In practical ... -
Channel Estimation and Equalization for Alamouti SF-Coded OFDM-UWA Communications
Panayırcı, Erdal; Altabbaa, Mhd Tahssin; Poor, H-Vincent (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2021-02)In this paper, a new channel estimation and equalization algorithm for underwater acoustic (UWA) communications is presented. The proposed algorithm is developed to meet the requirements of underwater time-varying sparse ... -
Channel Estimation and Physical Layer Security in Optical MIMO-OFDM based LED Index Modulation
Okumus, F. Batuhan; Panayırcı, Erdal; Khalighi, Mohammad Ali (IEEE, 2023)In this paper, we propose a new and low-complexity channel estimation algorithm for the generalized LED index modulation (GLIM), recently proposed for visible-light communication systems based on multi-input multi-output ... -
Channel Estimation for DCO-OFDM Based VLC Systems in the Presence of Clipping Noise
Bektaş, Ekin Başak; Panayırcı, Erdal (IEEE, 2020)Visible Light Communication(VLC) has been considered as a potential access option for 6G wireless systems to solve performance limitation due to bandwidth shortage at radio frequency (RF) band. In VLC system, illumination ... -
Channel Estimation for DCO-OFDM Based VLC Systems in the Presence of Clipping Noise
Bektas, E.B.; Panayırcı, Erdal (Institute of Electrical and Electronics Engineers Inc., 2020)Visible Light Communication(VLC) has been considered as a potential access option for 6G wireless systems to solve performance limitation due to bandwidth shortage at radio frequency (RF) band. In VLC system, illumination ... -
Channel estimation for MIMO-OFDM systems in fixed broadband wireless applications
Karakaya, Bahattin; Çırpan, Hakan Ali; Panayırcı, Erdal (IEEE, 2007)Systems employing multiple transmit and receive antennas known as multiple input multiple output (MIMO) systems can be used with OFDM to improve the resistance to channel impairments. Thus the technologies of OFDM and MIMO ... -
Channel Estimation for SM Systems over Time-Varying Rayleigh Fading Channels
Acar, Yusuf; Dogan, Hakan; Panayırcı, Erdal (IEEE, 2014)This paper is concerned with the challenging and timely problem of channel estimation for spatial modulated systems in the presence of time varying channels. Recently estimation of channel state information for SM systems ... -
Channel Estimation for Spatial Modulation Orthogonal Frequency Division Multiplexing Systems
Acar, Yusuf; Doğan, Hakan; Panayırcı, Erdal (IEEE, 2015)A combination of spatial modulation and orthogonal frequency division multiplexing (SM-OFDM) has been recently proposed for multicarrier systems while assuming the perfect channel state information (P-CSI) available at the ... -
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 ... -
Channel estimation in underwater cooperative OFDM system with amplify-and-forward relaying
Şenol, Habib; Panayırcı, Erdal; Erdoğan, Mustafa; Uysal, Murat (IEEE, 2012)This paper is concerned with a challenging problem of channel estimation for amplify-and-forward cooperative relay based orthogonal frequency division multiplexing (OFDM) systems in the presence of sparse underwater acoustic ... -
Channel Estimation Using Optical MIMO OFDM Based LED Index Modulation
Okumus, Furkan Batuhan; Panayırcı, Erdal (IEEE, 2021)In this paper, a new MIMO channel estimation technique is proposed for generalized LED index modulation (GLIM-OFDM) developed for multi-input multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) based VLC ... -
Channel Modeling for Visible Light Communications
Miramirkhani, Farshad; Uysal, Murat; Panayırcı, Erdal (Springer-Verlag Berlin, 2016)In this chapter, we present a novel and realistic channel modeling approach for visible light communications that overcomes the limitations of previous works. In our work, we consider wavelength dependency, effect of ... -
Conditional Power and Rate Adaptation for MQAM/OFDM Systems Under CFO With Perfect and Imperfect Channel Estimation Errors
Dong, Zhicheng; Fan, Pingzhi; Panayırcı, Erdal; Lei, Xianfu (IEEE-INST Electrical Electronics Engineers Inc, 2015)In this paper a new conditional power and rate adaptation scheme for orthogonal frequency-division multiplexing (OFDM) systems is proposed in the presence of carrier frequency offset (CFO) with perfect and imperfect channel ... -
Cost-effective test-bed for secure visible-light communication
Gurcuoglu, Oguz; Erdem, Mehmet Can; Ferhanoglu, Onur; Panayırcı, Erdal; Kurt, Gunes Karabulut (Spie-Soc Photo-Optical Instrumentation Engineers, 2022)This study presents a real-time hardware implementation of a novel physical layer security algorithm developed for visible-light communications (VLCs) based on precoded spatial modulation (SM). The demonstration was carried ...