Browsing Scopus İndeksli Yayınlar Koleksiyonu by Author "Panayırcı, Erdal"
Now showing items 21-40 of 117
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An efficient joint data detection and channel estimation technique for uplink MC-CDMA systems based on SAGE algorithm
Panayırcı, Erdal; Doğan, Hakan; Çırpan, Hakan Ali; Fleury, Bernard Henri (IEEE, 2007)This paper is concerned with joint channel estimation and data detection for uplink multicarrier code-division multiple-access (MC-CDMA) systems in the presence of frequency fading channel. The detection and estimation ... -
An Efficient SAGE-based Data Detection Algorithm for OFDM Systems in the Presence of Very Fast Fading Channels
Dong, Zhicheng; Fan, Pingzhi; Panayırcı, Erdal (IEEE, 2013)In this paper an iterative and computationally efficient data detection algorithm is proposed based on the space alternating generalized expectation maximization (SAGE) technique for orthogonal division multiplexing (OFDM) ... -
EM-based joint data detection and channel estimation for uplink MC-CDMA systems over frequency selective channels
Doğan, Hakan; Panayırcı, Erdal; Çırpan, Hakan Ali; Fleury, Bernard Henri (IEEE, 2007)This paper is concerned with joint channel estimation and data detection for uplink multicarrier code-division multiple-access (MC-CDMA) systems in the presence of frequency fading channel. The detection and estimation ... -
EM-Based MAP channel estimation and data detection for downlink MCC-CDMA systems
Doğan, Hakan; Panayırcı, Erdal; Çırpan, Hakan Ali (IEEE, 2007)In this work 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 multi-carrier (MC) code division ... -
EM-MAP based initialization of PIC receiver for downlink MC-CDMA systems
Doğan, Hakan; Cirpan, Hakan Ali; Panayırcı, Erdal (IEEE, 2007)The quality of multiple access interference (MAI) which can be improved by using channel estimation and data estimation of all active users effects considerably the performance of PIC detector. Therefore data and channel ... -
Energy-Efficient Resources Allocation with Millimeter-Wave Massive MIMO in Ultra Dense HetNets by SWIPT and CoMP
Yonghong Dai, Bin Li,; Dong, Zhicheng; Panayırcı, Erdal; Jiang, Huilin; Jiang, Hao (Institute of Electrical and Electronics Engineers Inc., 2021)Ultra-dense HetNets (UDN)-based Millimeter-Wave (mmWave) massive MIMO is considered a promising technology for 5th generation (5G) wireless communications systems since it can offer massively available bandwidth and improve ... -
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 ... -
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 ... -
Frequency selective fading channel estimation in OFDM systems using KL expansion
This paper proposes a computationally efficient linear minimum mean square error (MMSE) channel estimation algorithm based on KL series expansion for OFDM systems. Based on such expansion no matrix inversion is required ... -
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. ... -
Guest editorial: special issue on high mobility wireless communications
[Abstract Not Available] -
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 ... -
An Improved Adaptive Subspace Tracking Algorithm Based on Approximated Power Iteration
Wu, Qiang; Zheng, Jian-Sheng; Dong, Zhicheng; Panayırcı, Erdal; Wu, Zhi-Qiang; Ren, Qingnuobu (IEEE-INST Electrical Electronics Engineers Inc, 2018)A subspace tracking technique has drawn a lot of attentions due to its wide applications. The main objective of this approach is to estimate signal or noise subspace basis for the sample covariance matrix. In this paper ... -
Improved Physical Layer Security in Visible Light Communications by Using Focused Light Emitters
Gurcuoglu, Oguz; Erdem, Mehmet Can; Cirkinoglu, H. Ozan; Ferhanoglu, Onur; Kurt, Gunes Karabulut; Panayırcı, Erdal (IEEE, 2021)A conventional visible light communication system consists of a transmitter, a jammer that includes a few light emitting diodes, a legal listener and an eavesdropper. In this work, a similar system is designed with a ... -
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 ... -
Interpolation Based Pilot-Aided Channel Estimation for STBC Spatial Modulation and Performance Analysis Under Imperfect CSI
Acar, Yusuf; Dogan, Hakan; Basar, Ertugrul; Panayırcı, Erdal (Inst Engineering Technology-IET, 2016)A combination of space-time block coding and spatial modulation (STBC-SM) has been recently proposed for multiple input-multiple output systems to obtain both spatial diversity gain and more capacity simultaneously while ... -
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 [Hızlı sönümlemeli kanallarda uzaysal modülasyon sistemleri için iteratif kanal kestirimi]
Acar, Yusuf; Doğati, Hakan; Panayırcı, Erdal (IEEE Computer Society, 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)- ...