Browsing Scopus İndeksli Yayınlar Koleksiyonu by Author "Panayırcı, Erdal"
Now showing items 61-80 of 117
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Nondata-aided joint channel estimation and equalization for OFDM systems in very rapidly varying mobile channels
Şenol, Habib; Panayırcı, Erdal; Poor, H. Vincent (IEEE-INST Electrical Electronics Engineers Inc, 2012)This paper is concerned with the challenging and timely problem of joint channel estimation and equalization for orthogonal frequency division multiplexing (OFDM) systems in the presence of frequency selective and very ... -
Novel Channel Models For Visible Light Communications
Miramirkhani, Farshad; Uysal, Murat; Panayırcı, Erdal (Spie-Int Soc Optical Engineering, 2015)In this paper we investigate channel modeling for visible light communications (VLC) using non-sequential ray tracing simulation tools. We create three dimensional realistic simulation environments to depict indoor scenarios ... -
On channel estimation for spatial modulated systems over time-varying channels
Acar, Yusuf; Doğan, Hakan; Panayırcı, Erdal (Academic Press Inc Elsevier Science, 2015)Spatial Modulation (SM) has been proposed recently for multiple-input multiple-output (MIMO) systems to cope with the interchannel interference and to reduce the detection complexity as compared to the conventional MIMO ... -
On Channel Estimation in DC Biased Optical OFDM Systems Over VLC Channels
Sayli, Osman; Dogan, Hakan; Panayırcı, Erdal (IEEE Computer Society, 2016)Visible Light Communication(VLC) has been considered as a potential access option for 5G wireless systems to solve performance limitation due to bandwidth shortage at radio frequency (RF) band. In (VLC) system illumination ... -
Optical Index-Coded Space Shift Keying (IC/SSK)
Panayırcı, Erdal (Institute of Electrical and Electronics Engineers Inc, 2021)In this letter, a new channel coding technique is proposed for optical spatial shift keying (SSK)-based visible light communications (VLC) systems by introducing redundancy in the spatial domain. The information is encoded ... -
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 ... -
Optical OFDM with index modulation for visible light communications
Basar, Ertugrul; Panayırcı, Erdal (Institute of Electrical and Electronics Engineers Inc., 2015)In this paper we propose optical orthogonal frequency division multiplexing with index modulation (O-OFDM-IM) for visible light communications (VLC) systems employing light emitting diodes (LEDs) and photodetectors (PDs). ... -
Optical spatial modulation design
Tezcan, Çoğalan; Harald, Haas; Panayırcı, Erdal (Royal Soc, 2020)Visible light communication (VLC) systems are inherently signal-to-noise ratio (SNR) limited due to link budget constraints. One favourable method to overcome this limitation is to focus on the pre-log factors of the channel ... -
Optical Spatial Modulation OFDM System Design [Optik Uzaysal Modülasyonlu OFDM Sistem Tasarımı]
Cihan, Salih Bilge; Basar, Ertugrul; Panayırcı, Erdal (Institute of Electrical and Electronics Engineers Inc., 2016)In this paper a new optical orthogonal frequency division multiplexing (OFDM) method is proposed for multiple-input multiple-output (MIMO) visible light communications (VLC) systems. In the new scheme non-DC biased optical ... -
Orthogonal Frequency Division Multiplexing With Index Modulation
Başar, Ertuğrul; Aygölü, Ümit; Panayırcı, Erdal; Poor, H. Vincent (IEEE-INST Electrical Electronics Engineers Inc, 2013)In this paper a novel orthogonal frequency division multiplexing (OFDM) scheme called OFDM with index modulation (OFDM-IM) is proposed for operation over frequency-selective and rapidly time-varying fading channels. In ... -
Orthogonal frequency division multiplexing with index modulation
Başar, E.; Aygölü, U.; Panayırcı, Erdal; Poor, H.V. (2012)In this paper, a novel orthogonal frequency division multiplexing (OFDM) scheme, which is called OFDM with index modulation (OFDM-IM), is proposed for frequency-selective fading channels. In this scheme, inspiring from the ... -
Orthogonal frequency division multiplexing with index modulation in the presence of high mobility
Basar, Ertugrul; Aygölü, Ümit; Panayırcı, Erdal (2013)In this paper a novel orthogonal frequency division multiplexing (OFDM) scheme which is called OFDM with index modulation (OFDM-IM) is proposed for frequency-selective fading channels in the presence of high mobility. In ... -
Partial Power and Rate Adaptation for MQAM/OFDM Systems under CFO
Dong, Zhicheng; Fan, Pingzhi; Panayırcı, Erdal; Lei, Xianfu (IEEE, 2014)In this paper a new partial power and rate adaptation scheme for orthogonal frequency division multiplexing (OFDM) systems is proposed in the presence of carrier frequency offset (CFO). The conventional adaptive scheme is ... -
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 ... -
Performance of MIMO enhanced unipolar OFDM with realistic indoor visible light channel models
Yesilkaya, A.; Miramirkhani, F.; Basar, E.; Panayırcı, Erdal; Uysal, M. (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 ... -
Performance of space time codes with transmit antenna selection over frequency selective fading channels in the presence of channel estimation errors
Güçlüoğlu, Tansal; Panayırcı, Erdal (2008)This paper presents a performance analysis of space-time coded systems with transmit antenna selection over frequency selective fading channels when the erroneously estimated fading coefficients are available only at the ... -
Performance of spatial modulation in the presence of channel estimation errors
Basar, Ertuğrul; Aygölü, Ümit; Panayırcı, Erdal; Poor, H. Vincent (IEEE-INST Electrical Electronics Engineers Inc, 2012)This work investigates the negative effects of channel estimation errors on the performance of spatial modulation (SM) when operating over flat Rayleigh fading channels. The pairwise error probability of the SM scheme is ... -
Performance of transmit and receive antenna selection in the presence of channel estimation errors
Güçlüoğlu, Tansal; Panayırcı, Erdal (IEEE-INST Electrical Electronics Engineers Inc, 2008)This letter considers the effect of channel estimation errors on the performance of space-time coded (STC) systems with transmit and receive antenna selection over quasi-static flat fading channels. By performing pairwise ... -
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 6G Networks
Mucchi, Lorenzo; Jayousi, Sara; Caputo, Stefano; Panayırcı, Erdal; Shahabuddin, Shahriar; Bechtold, Jonathan; Morales, Ivan (IEEE-Inst Electrical Electronics Engineers Inc, 2021)The sixth generation (6G) of mobile network will be composed by different nodes, from macro-devices (satellite) to nano-devices (sensors inside the human body), providing a full connectivity fabric all around us. These ...