Browsing Scopus İndeksli Yayınlar Koleksiyonu by Author "Panayırcı, Erdal"
Now showing items 81-100 of 117
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Physical-layer security in visible light communications
Yeşilkaya, Anıl; Çoğalan, Tezcan; Erküçük, Serhat; Şadi, Yalçın; Panayırcı, Erdal; Haas, Harald; Poor, Harold Vincent (Institute of Electrical and Electronics Engineers Inc., 2020)Optical wireless communications (OWC) and its potential to solve physical layer security (PLS) issues are becoming important research areas in 6G communications systems. In this paper, an overview of PLS in visible light ... -
Physical-Layer Security With Optical Generalized Space Shift Keying
Panayırcı, Erdal; Yeşilkaya, Anıl; Çoğalan, Tezcan; Poor, H. Vincent; Haas, Harald (Ieee-Inst Electrıcal Electronıcs Engıneers Inc, 2020)Spatial modulation (SM) is a promising technique that reduces inter-channel interference while providing high power efficiency and detection simplicity. In order to ensure the secrecy of SM, precoding and friendly jamming ... -
Pilot assisted channel estimation for asymmetrically clipped optical OFDM over visible light channels
Dogan, Hakan; Şayli, Osman; Panayırcı, Erdal (Institute of Electrical and Electronics Engineers Inc., 2017)The Visible Light Communication(VLC) has drawn significant attention recently for wireless communication in addressing the performance limitations of wireless systems due to the scarcity of bandwidth. In VLC system the ... -
Pilot Symbol Aided Channel Estimation for Spatial Modulation-OFDM Systems and its Performance Analysis with Different Types of Interpolations
Acar, Yusuf; Doğan, Hakan; Panayırcı, Erdal (Springer, 2017)Spatial modulation orthogonal frequency division multiplexing (SM-OFDM) system has been recently proposed as an alternative for multiple-input multiple-output (MIMO)-OFDM systems to increase spectral efficiency by keeping ... -
Pilot Symbol Assisted Channel Estimation for 4x4 Space Time Block Coded Spatial Modulation Systems
Acar, Yusuf; Doğan, Hakan; Panayırcı, Erdal (IEEE, 2015)Recently spatial modulation (SM) and space-time block coding (STBC) are combined to take advantage of the benefits of both while avoiding their drawbacks for multiple-input and multiple-output (MIMO) systems. The pioneering ... -
Pilot-aided bayesian MMSE channel estimation for OFDM systems: Algorithm and performance analysis
This paper proposes a computationally efficient pilot-aided minimum mean square error (MMSE) channel estimation algorithm for OFDM systems. The proposed approach employs a convenient representation of the discrete multipath ... -
Power and Rate Adaptation Based on CSI and Velocity Variation for OFDM Systems Under Doubly Selective Fading Channels
Dong, Zhicheng; Fan, Pingzhi; Lei, Xianfu; Panayırcı, Erdal (IEEE-INST Electrical Electronics Engineers Inc, 2016)In this paper a novel joint continuous power and rate adaptation scheme is proposed fordoubly selective fading channels in orthogonal frequency division multiplexing (OFDM) systems based on terminal velocity and perfect ... -
Power and rate adaptation for MQAM/OFDM systems under fast fading channels
Dong, Zhicheng; Fan, Pingzhi; Zhou, Weixi; Panayırcı, Erdal (IEEE, 2012)In this paper the effect of power and rate adaptation on the spectral efficiency of orthogonal frequency division multiplexing (OFDM) systems using M-ary quadrature amplitude modulation (MQAM) is investigated in the presence ... -
Power Control and Resource Allocation in TDD-OFDM Based Femtocell Networks with Interference
Altabbaa, Mhd Tahssin; Arsan, Taner; Panayırcı, Erdal (IEEE, 2017)Femtocell technology is a promising solution for different dilemmas in cellular networks. In femtocell power control the interference experienced by the network is divided into two main tiers according to the type of network ... -
Precoded single-cell multi-user MISO visible light communications
Cogalan, Tezcan; Haas, Harald; Panayırcı, Erdal (Institute of Electrical and Electronics Engineers Inc., 2015)This study investigates the effects of transmitter and receiver parameters on the performance of a precoded singlecell (SC) multi-user (MU) multi-input-single-output (MISO) visible light communication (VLC) system. A ... -
Relay-Aided Secure Broadcasting for Visible Light Communications
Arafa, Ahmed; Panayırcı, Erdal; Poor, H. Vincent (IEEE-Inst Electrical Electronics Engineers Inc, 2019)A visible light communication broadcast channel is considered, in which a transmitter luminaire communicates with two legitimate receivers in the presence of an external eavesdropper. A number of trusted cooperative ... -
Relay-Aided Secure Broadcasting for VLC
Arafa, Ahmed; Panayırcı, Erdal; Poor, H. Vincent (IEEE, 2018)A visible light communication (VLC) broadcast channel is considered in which a transmitter communicates with two receivers in the presence of an external eavesdropper. Trusted cooperative half-duplex relays are deployed ... -
A Reliable Successive Relaying Protocol
Başar, Ertuğrul; Aygölü, Ümit; Panayırcı, Erdal; Poor, H. Vincent (IEEE-INST Electrical Electronics Engineers Inc, 2014)Successive relaying has recently emerged as an effective technique for cooperative networks and provides significant improvements in bandwidth efficiency over traditional relaying techniques ;however to achieve full-diversity ... -
Reliable two-path successive relaying
Emerging two-path successive relaying protocols generally rely on error-free source-relay channels and/or interference-free inter-relay channels to achieve high-rate and full-diversity. In this paper by removing these ... -
Research on Power Distribution Method of OFDM System with Hybrid Energy Supply under Fast Fading Channel
Liu, Yipeng; Dong, Zhicheng; Xiao, Wei; Panayırcı, Erdal (IEEE, 2021)An adaptive power allocation by minimizing grid power consumption for the Orthogonal Frequency Division Multiplexing (OFDM) system with the hybrid energy supply under a fast fading channel is proposed in this paper. To ... -
Secure Transmission for THz-Empowered RIS-Assisted Non-Terrestrial Networks
Yuan, Jing; Chen, Gaojie; Wen, Miaowen; Tafazolli, Rahim; Panayırcı, Erdal (IEEE-Inst Electrical Electronics Engineers Inc, 2023)The non-terrestrial networks (NTNs) are recognized as a key component to provide cost-effective and high-capacity ubiquitous connectivity in the future wireless communications. In this paper, we investigate the secure ... -
Security and Reliability Performance of Noise-Loop Modulation: Theoretical Analysis and Experimentation
Mucchi, Lorenzo; Caputo, Stefano; Marcocci, Patrizio; Chisci, Giovanni; Ronga, Luca; Panayırcı, Erdal (IEEE-Inst Electrical Electronics Engineers Inc, 2022)Security is a crucial feature of current (5G) and even more for future (6G) communication networks. While the innate nature of the wireless channel is an issue for guaranteeing security, its physical characteristics can ... -
Semiblind joint channel estimation and equalization for OFDM systems in rapidly varying channels
We describe a new joint iterative channel estimation and equalization algorithm for joint channel estimation and data detection for orthogonal frequency division multiplexing (OFDM) systems in the presence of frequency ... -
Signal Processing Techniques for 6G
Mucchi, Lorenzo; Shahabuddin, Shahriar; Albreem, Mahmoud A. M.; Abdallah, Saeed; Caputo, Stefano; Panayırcı, Erdal; Juntti, Markku (Springer, 2023)6G networks have the burden to provide not only higher performance compared to 5G, but also to enable new service domains as well as to open the door over a new paradigm of mobile communication. This paper presents an ... -
Slotted Aloha for Optical Wireless Communications in Internet of Underwater Things
Petkovic, M.; Tegos, S.A.; Diamantoulakis, P.D.; Vukobratovic, D.; Panayırcı, Erdal; Stefanovic, C.; Karagiannidis, G.K. (Institute of Electrical and Electronics Engineers Inc., 2023)In this work, we design and analyse a Slotted ALOHA (SA) solution for Optical Wireless Communication (OWC)-based Internet of Underwater Things (IoUT). In the proposed system, user devices exchange data with an access point ...