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Showing 1-25 of 1,315 resultsfor "Index Terms":Visible Part
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Impact of Multiple Shadows on Visible Light Communication Channel
IEEE Communications Letters
Cited by: Papers (35)
This letter investigates the impact of multiple shadows for indoor visible light communication (VLC) systems composed of a VLC access point and multiple terminals. The blockage is a crucial problem in the VLC system, which would result in great deterioration of users’ communication quality due to the shadow area caused by the blockage. Considering the room boundaries and overlap between shadows, w...Show More
RGB MIMO optical camera communication with Histogram equalization
2017 International Conference on Signals and Systems (ICSigSys)
Year: 2017 | Conference Paper |
Cited by: Papers (6)
Unlike the conventional visible light communication (VLC) adopting photo detectors (PD), optical camera communications (OCC) with the rolling shutter effect is considered for the new VLC standard 802.15.7r1. This is because conventional VLC requires additional devices for communication purpose. But as the smart devices have embedded cameras, so OCC could be used in smart devices without any additi...Show More
Vehicular Visible Light Positioning with a Single Receiver
2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Year: 2019 | Conference Paper |
Vehicle-to-vehicle (V2V) communication and positioning systems are expected to play an important role in the development of future automated and autonomous vehicle safety concepts. Visible light communication and positioning (VLC and VLP) promise high data rates and cm-level positioning accuracy, respectively, with vehicle head/tail lights. Existing methods for vehicular VLP often require multiple...Show More
Energy Efficiency Optimization for Rate-Splitting Multiple Access-Based Indoor Visible Light Communication Networks
With the explosive proliferation of connected devices and mobile users in the Internet-of-things, multiple access techniques are urged to be developed for the next generation wireless communications. Recently, rate-splitting multiple access (RSMA) has been a promising communication technology that holds advantages of strong robustness, low complexity, and high spectral efficiency, which can be int...Show More
Joint Blind Channel Estimation, Channel Equalization, and Data Detection for Underwater Visible Light Communication Systems
In this letter, we jointly consider the problems of blind channel estimation (BCE), channel equalization and data detection in underwater visible light communication (UVLC) systems. Specifically, we propose to solve them with a model-driven deep learning (DL) approach. Inspired by the module-based signal processing methodology and communication theory, we devise a new blind receiver architecture c...Show More
Vehicular VLC System With Selection Combining
The availability of LED-based headlights and taillights makes possible the use of visible light communication (VLC) as a wireless access technology for vehicle-to-vehicle (V2V) communications. A critical concern to establish a reliable VLC link between two moving vehicles is the number of photodetectors and their locations on the destination vehicle. In this paper, we experimentally investigate th...Show More
Experimental 5G New Radio integration with VLC
Lina Shi;Wei Li;Xun Zhang;Yue Zhang;Gaojie Chen;Andrei Vladimirescu
2018 25th IEEE International Conference on Electronics, Circuits and Systems (ICECS)
Year: 2018 | Conference Paper |
Cited by: Papers (21)
In this paper, integration of 5G New Radio (5G NR) with a Visible Light Communication (VLC) downlink architecture is proposed. This scheme combines two complementary wireless technologies: upcoming 5G NR and VLC to offer indoor enhanced wireless hybrid access able to provide each User Equipment (UE) with very high data rate and positioning support. The data transmission of the 5G NR frame over VLC...Show More
A Stacked Autoencoder Method for the PAPR Reduction in VLC Systems
2020 Asia-Pacific Conference on Image Processing, Electronics and Computers (IPEC)
Year: 2020 | Conference Paper |
Cited by: Papers (1)
The visible light communication (VLC) system can provide data communication function as well as lighting. It is widely used in automated and sustainable smart farming for its energy efficiency, reliability, security without degrading the crops growth compared to radio frequency communication. A novel peak to average power ratio (PAPR) reduction method is applied based on stacked autoencoder networ...Show More
Object Detection Based On Decision Level Fusion
2019 Chinese Automation Congress (CAC)
Year: 2019 | Conference Paper |
Object detection is widely used in different fields. In this paper, a new object detection model of decision level fusion based on Mask R-CNN is proposed. The model fuses the infrared images and the visible images at decision-making level. It is called as IVF-Mask R-CNN. In order to improve the stability and the accuracy of the IVF-Mask R-CNN model, the partial network freeze strategy, learning ra...Show More
Non-Hermitian symmetry OFDM for indoor space division multiplexing visible light communications
2016 18th International Conference on Transparent Optical Networks (ICTON)
Year: 2016 | Conference Paper |
Cited by: Papers (7)
We propose a non-Hermitian symmetry orthogonal frequency division multiplexing (NHS-OFDM) scheme for indoor space division multiplexing based visible light communication (SDM-VLC) systems. NHS-OFDM removes the constraint of Hermitian symmetry and generates light-emitting diode (LED) compatible real-valued signals by parallelly transmitting the real (Re) part and the imaginary (Im) part of a comple...Show More
The Effect of Power Allocation on Visible Light Communication Using Commercial Phosphor-Converted Led Lamp for Indirect Illumination
Alexis A. Dowhuszko;Mehmet Ilter;Paulo Pinho;Jyri Hämäläinen
ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Year: 2020 | Conference Paper |
Cited by: Papers (6)
Visible light communication (VLC) systems should be designed to provide illumination and wireless data services simultaneously. To achieve this goal at a reasonable cost, the use of Phosphor-Converted (PC) LEDs for indirect illumination should be favored to provide a homogeneous and reliable coverage in the whole service area. Unfortunately, PC-LEDs found in the market so far have not been designe...Show More
The Effect of Power Allocation on Visible Light Communication Using Commercial Phosphor-Converted Led Lamp for Indirect Illumination
Alexis A. Dowhuszko;Mehmet Ilter;Paulo Pinho;Jyri Hämäläinen
ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Year: 2020 | Conference Paper |
High speed visible light communication system using QAM-DMT modulation based on digital zero-padding and differential receiver
2017 16th International Conference on Optical Communications and Networks (ICOCN)
Year: 2017 | Conference Paper |
Cited by: Papers (4)
We have proposed a novel hybrid software and hardware equalization scheme based on digital zero-padding pre-equalization and differential reception. We have experimental demonstrated a red LED based visible light communication system over 1-meter free space transmission with the measured BER below 7% FEC threshold. The signal is QAM-DMT modulated and the modulation level is varying from 32QAM to 1...Show More
The increasing demand of mobile internet and Internet of Things poses challenging requirements for indoor wireless communication. Visible light communication (VLC) is a promising technology to alleviate the growing traffic problem. In addition, nonlinear distortion of light emitting diodes (LEDs) results in a poor link quality. In this paper, we propose multiple access with polarity division spars...Show More
Hilbert-Huang Transformation based solar light noise suppression method
2015 4th International Conference on Computer Science and Network Technology (ICCSNT)
Year: 2015 | Conference Paper |
Cited by: Papers (1)
Solar light noise, as the main part of channel noise in outdoor visible light communication (VLC) system, would easily saturate the photon-detector, and dramatically decrease the outdoor VLC system performance. A Hilbert-Huang Transformation based solar light noise suppression method is proposed in this paper. A solar light noise measurement system is also designed and implemented to verify the no...Show More
On the Spectral Performance of Dimming-based Multilevel Modulation Schemes for VLC Systems
2021 IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS)
Year: 2021 | Conference Paper |
Cited by: Papers (1)
Dimming support is an essential feature of any practical visible light communication (VLC) system. In this paper, we study the spectral performance of two multilevel dimming-based modulation schemes, namely multiple pulse position modulation (MMPM) and overlapping pulse position modulation (OPPM). We quantify the bandwidth (BW) required by these schemes based on their power spectral densities (PSD...Show More
eU-OFDM based multiple access for visible light communication networks
Gerard Djengomemgoto;Omer Narmanlioglu;Refik Caglar Kizilirmak;Murat Uysal
2016 IEEE 10th International Conference on Application of Information and Communication Technologies (AICT)
Year: 2016 | Conference Paper |
Cited by: Papers (1)
In this paper, we propose a novel protocol for cooperative multiple access in visible light communication (VLC) networks. The proposed protocol exploits the features of enhanced unipolar orthogonal frequency division multiplexing (eU-OFDM) scheme in order to enable user terminals to sequentially access the multi-hop network. The signal-to-noise ratios (SNRs) for user terminals within the network a...Show More
Silicon photomultiplier (SiPM) has higher receiver sensitivity than traditional PIN and APD but suffers from nonlinearity due to the dead time. In this paper, we propose an adaptive trigonometric-based nonlinear equalizer (ATNLE) to compensate for the nonlinear effect in the SiPM-based visible light communication (VLC) system. Experiments of a 100–300 Mbaud PAM-8 VLC system show that the proposed ...Show More
Dimming-Based Modulation Schemes for Visible Light Communication: Spectral Analysis and ISI Mitigation
Visible light communication (VLC) is being envisioned as an enabling technology to provide the much-needed spectral relief for the ever-increasing demand for Internet connectivity and data consumption. Since VLC uses illumination sources for lighting as well as communication, it is required to provide dimming control for proper lighting and enhanced error performance for reliable data communicatio...Show More
Triangular-shaped Metamaterial-based EM Absorber for Visible and Infrared Regime
Md. Sharif Mia;Md. Mottahir Alam;Rezaul Azim;Mandeep Jit Singh;Touhidul Alam;Mohammad Tariqul Islam
2022 12th International Conference on Electrical and Computer Engineering (ICECE)
Year: 2022 | Conference Paper |
Cited by: Papers (2)
A hexagonal-triangular-shaped metamaterial absorber with a hexagonal slot is presented in this paper for the visible and infrared regions. This absorber is based on double layer Si and SiO2 substrate and Tungsten layer metallic design. The metamaterial absorber has been designed using CST microwave studio and studied for the visible and infrared regions. The developed absorber has achieved a maxim...Show More
The aggregated visible light communication (VLC) and radio frequency (RF) system, which can be regarded as a heterogeneous multiple-input multiple-output system, has been studied to operate with novel multiple access technologies for effectively expanding spectrum resources. In this letter, we propose a novel cooperative rate splitting multiple access (RSMA)-based aggregated VLC/RF system that for...Show More
Rate-Splitting Multiple Access: Unifying NOMA and SDMA in MISO VLC Channels
Shimaa Naser;Paschalis C. Sofotasios;Lina Bariah;Wael Jaafar;Sami Muhaidat;Mahmoud Al-Qutayri;Octavia A. Dobre
The increased proliferation of connected devices requires a development of innovative technologies for the next generation of wireless systems. One of the key challenges, however, is the spectrum scarcity, owing to the unprecedented broadband penetration rate in recent years. Based on this, visible light communication (VLC) has recently emerged as an effective potential solution for enabling high-...Show More
Demonstration of A Visible Light Receiver Using Rolling-Shutter Smartphone Camera
Tuan-Kiet TRAN;Huu-Thuan HUYNH;Duc-Phuc NGUYEN;LE Dinh-Dung;Thi-Hong TRAN;Yasuhiko NAKASHIMA
2018 International Conference on Advanced Technologies for Communications (ATC)
Year: 2018 | Conference Paper |
Cited by: Papers (5)
Visible Light Communication (VLC) which has a mass of applications is getting much attention in both academic field and industry. Specifically, light-to-camera (LTC) communications in which information is transmitted to user through visible light signals; whereas, rolling-shutter camera-based receivers are utilized to capture and decode transmitted signals. In this paper, we present a demonstratio...Show More
CEMD Solar Noise Suppression for OFDM based Visible Light Vehicular Communication
2023 Second International Conference on Electrical, Electronics, Information and Communication Technologies (ICEEICT)
Year: 2023 | Conference Paper |
Cited by: Papers (3)
This paper proposes a solar shot noise suppression algorithm using the complex empirical mode decomposition (CEMD) for the orthogonal frequency division multiplexing (OFDM) based visible light vehicular communication. The primary empirical mode decomposition can be used only for real-valued signals. In this work, it is extended to use in the complex realm signals. After the desired signal is broke...Show More
Sunlight Enabled Vehicle Detection by LED Street Lights
2018 Asia Communications and Photonics Conference (ACP)
Year: 2018 | Conference Paper |
Cited by: Papers (2)
Expanding The Area of Light Fidelity
2019 International Conference on Sustainable Technologies for Industry 4.0 (STI)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
At present, Wireless technology is used all over the world to ensure the availability of the internet. Although, the routers of Wi-Fi ensure the availability of data within a certain area it has some speed limitation. Li-Fi is one of the latest wireless technologies, which provides access to the internet using visible lights. In short Light Fidelity is called Li-Fi. In this process, data is transf...Show More
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