Araştırma Çıktıları | WoS | Scopus | TR-Dizin | PubMed by Institution Author "Panayırcı, Erdal"
Now showing items 21-40 of 72
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Flexible physical layer based resource allocation for machine type communications towards 6G
Şadi, Yalçın; Erküçük, Serhat; Panayırcı, Erdal (Institute of Electrical and Electronics Engineers Inc., 2020)The exponential growth of Internet of Things applications necessitates the design of next generation cellular systems to provide native support for machine type communications (MTC). While 5G aims at providing this native ... -
Generalized LED Index Modulation Optical OFDM for MIMO Visible Light Communications Systems
Basar, Ertuğrul; Panayırcı, Erdal; Uysal, Murat; Haas, Harald (IEEE, 2016)In this paper we propose a generalized light emitting diode (LED) index modulation scheme for multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) visible light communications (VLC) systems. ... -
IEEE 802.15.7r1 Reference Channel Models for Visible Light Communications
Miramirkhani, Farshad; Narmanlıoğlu, Ömer; Baykas, Tuncer; Uysal, Murat; Panayırcı, Erdal (IEEE-Inst Electrical Electronics Engineers Inc, 2017)The IEEE has established the standardization group 802.15.7r1 "Short Range Optical Wireless Communications", which is currently in the process of developing a standard for visible light communication (VLC). As with any ... -
Information Theoretical Performance Analysis and Optimisation of Cooperative Underwater Acoustic Communication Systems
Nouri, Hatef; Uysal, Murat; Panayırcı, Erdal (Inst Engineering Technology-IET, 2016)In this study the authors investigate the information theoretical limits on the performance of single-carrier cooperative underwater acoustic communication systems in the presence of intersymbol interference. The authors ... -
Information theoretical performance limits of single-carrier underwater acoustic systems
Nouri, Hatef; Uysal, Murat; Panayırcı, Erdal; Şenol, Habib (Inst Engineering Technology-IET, 2014)In this study the authors investigate the information theoretical limits on the performance of point-to-point single-carrier acoustic systems over frequency-selective underwater channels with intersymbol interference. Under ... -
Iterative channel estimation and decoding of turbo coded SFBC-OFDM systems
Doğan, Hakan; Çırpan, Hakan Ali; Panayırcı, Erdal (IEEE, 2007)We consider the design of turbo receiver structures for space-frequency block coded orthogonal frequency division multiplexing (SFBC-OFDM) systems in the presence of unknown frequency and time selective fading channels. ... -
Iterative channel estimation for spatial modulation systems over fast fading channels
Acar, Yusuf; Doğan, Hakan; Panayırcı, Erdal (IEEE, 2014)Spatial Modulation (SM) based on the use of antenna indices to transmit information in addition to the conventional signal constellations has been recently proposed to solve practical problems encountered in MIMO systems. ... -
Iterative channel estimation techniques for uplink MC-CDMA systems
Doğan, Hakan; Panayırcı, Erdal; Çırpan, Hakan Ali (IEEE, 2007)In this work maximum likelihood (ML) channel estimation for uplink multicarrier code-division multiple-access (MC-CDMA) systems is considered in the presence of frequency fading channel. The expectation-maximization (EM)- ... -
Iterative Receiver for DS-CDMA Systems in the Presence of Time-Varying Channels
Doğan, Hakan; Panayırcı, Erdal; Çırpan, Hakan Ali; Cam, Gökhan (IEEE, 2008)In this paper we present an efficient iterative receiver structure of tractable complexity for joint multiuser detection and multichannel estimation (JDE) of direct-sequence code-division multiple-access systems operating ... -
Joint Channel Estimation Equalization and Data Detection for OFDM Systems in the Presence of Very High Mobility
Panayırcı, Erdal; Şenol, Habib; Poor, H. Vincent (IEEE-INST Electrical Electronics Engineers Inc, 2010)This paper is concerned with the challenging and timely problem of joint channel estimation equalization and data detection for uplink orthogonal frequency division multiplexing (OFDM) systems in the presence of frequency ... -
Joint Data Detection and Channel Estimation for OFDM Systems in the Presence of Very High Mobility
Panayırcı, Erdal; Şenol, Habib; Poor, H. Vincent (IEEE, 2009)This paper is concerned with the challenging and timely problem of joint channel estimation and data detection for orthogonal frequency division multiplexing (OFDM) systems in the presence of frequency selective and very ... -
Joint data detection and channel estimation for uplink MC-CDMA systems over frequency selective channels
Panayırcı, Erdal; Doğan, Hakan; Çırpan, Hakan Ali; Fleury, Bernard Henri (Springer, 2007)This paper is concerned with joint channel estimation and data detection for uplink multicarrier code-division multiple-access (MC-CDMA) systems ill the presence of frequency fading channel. The detection and estimation ... -
Linear expansions for frequency selective channels in OFDM
Şenol, Hande; Çırpan, Hakan Ali; Panayırcı, Erdal (Elsevier GMBH Urban & Fischer Verlag, 2006)Modeling the frequency selective fading channels as random processes we employ a linear expansion based on the Karhumen-Loeve (KL) series representation involving a complete set of orthogonal deterministic vectors with a ... -
Low-Complexity MAP-Based Successive Data Detection for Coded OFDM Systems Over Highly Mobile Wireless Channels
Panayırcı, Erdal; Dogan, Hakan; Poor, H. Vincent (IEEE-INST Electrical Electronics Engineers Inc, 2011)This paper is concerned with the challenging and timely problem of data detection for coded orthogonal frequency-division multiplexing (OFDM) systems in the presence of frequency-selective and very rapidly time varying ... -
A low-complexity time-domain MMSE channel estimator for space-time/frequency block-coded OFDM systems
Şenol, Habib; Çırpan, Hakan Ali; Panayırcı, Erdal (Hindawi Publishing Corporation, 2006)Focusing on transmit diversity orthogonal frequency-division multiplexing (OFDM) transmission through frequency-selective channels this paper pursues a channel estimation approach in time domain for both space-frequency ... -
MAP channel-estimation-based PIC receiver for downlink MC-CDMA systems
Doğan, Hakan; Panayırcı, Erdal; Çırpan, Hakan Ali; Fleury, Bernard Henri (Hindawi Publishing Corporation, 2008)We propose a joint MAP channel estimation and data detection technique based on the expectation maximization (EM) method with paralel interference cancelation (PIC) for downlink multicarrier (MC) code division multiple ... -
A Mobile Channel Model for VLC and Application to Adaptive System Design
Miramirkhani, Farshad; Narmanlıoğlu, Ömer; Uysal, Murat; Panayırcı, Erdal (IEEE-INST Electrical Electronics Engineers Inc, 2017)In this letter we propose a realistic channel model for visible light communication (VLC) assuming a mobile user. Based on non-sequential ray tracing we first obtain channel impulse responses for each point over the user ... -
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 ... -
MP-SAGE Based Channel Estimation for Underwater Cooperative OFDM Systems
Erdoğan, Mustafa; Şenol, Habib; Panayırcı, Erdal; Uysal, Murat (IEEE, 2013)In this paper an efficient channel estimation algorithm is proposed for amplify-and-forward (AF) cooperative relay based orthogonal frequency division multiplexing (OFDM) system in the presence of sparse underwater acoustic ...