Scopus İndeksli Yayınlar Koleksiyonu by Institution Author "Panayırcı, Erdal"
Now showing items 21-40 of 58
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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 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)- ... -
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 ... -
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 ... -
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 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 ... -
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 ... -
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 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 ...