Filters








133 Hits in 4.4 sec

Authors Index

2021 2021 26th IEEE Asia-Pacific Conference on Communications (APCC)  
for Massive MIMO Systems Li, Qingqing 310 Beam Selection for Cell-free Millimeter-Wave Massive MIMO Systems Li, Weizhi 39 A Novel Iterative Receiver for PAM-DMT Based Hybrid Optical OFDM Li, Xiangjun  ...  Boxiao 39 A Novel Iterative Receiver for PAM-DMT Based Hybrid Optical OFDM Haruta, Shuichiro 7 A Website Fingerprinting Attack based on the Virtual Memory of the Process on Android Devices Hashim, Fazirulhisyam  ...  Consensus Transmit Power Control with Optimal Search Technique for Full-duplex Wireless Multihop Networks  ... 
doi:10.1109/apcc49754.2021.9609806 fatcat:meigirzpmnacpihm4q6pzqjayu

A Novel OFDM Format and a Machine Learning Based Dimming Control for LiFi

Itisha Nowrin, M. Rubaiyat Hossain Mondal, Rashed Islam, Joarder Kamruzzaman
2021 Electronics  
optical OFDM (DCO-OFDM) and pulse amplitude modulated discrete multitone (PAM-DMT).  ...  It is shown that polynomial regression of degree 4 can reliably predict the constellation size of the DCO-OFDM component of DPO-OFDM for a given constellation size of PAM-DMT.  ...  Funding: This research received no external funding. The APC will be funded by the School of Engineering, IT and Physical Sciences, Federation University Australia.  ... 
doi:10.3390/electronics10172103 fatcat:j2w7dw6ijzgmvgqiqklz4x5jxu

Interplay of Bit Rate, Linewidth, Bandwidth, and Reach on Optical DMT and PAM With IMDD

Amin Yekani, Leslie A. Rusch
2019 IEEE Transactions on Communications  
We theoretically compare the performance of optical discrete multi-tone (DMT) and pulse amplitude modulation (PAM) using intensity modulated, direct detection (IMDD).  ...  We study how system parameters shift the performance advantages between DMT and PAM.  ...  This same value of SNR is used for PAM and is selected as it represents acceptable performance over a wide range of typical system parameters such as the ratio of bit rate to bandwidth, and the laser linewidth  ... 
doi:10.1109/tcomm.2019.2892756 fatcat:fpsbntiinrfvdb5m5p562m2nc4

Augmenting the spectral efficiency of enhanced PAM-DMT-based optical wireless communications

Mohamed Sufyan Islim, Harald Haas
2016 Optics Express  
In order to maintain a distortion-free unipolar ePAM-DMT system, the multiple timedomain PAM-DMT streams are required to be aligned.  ...  Enhanced PAM-DMT (ePAM-DMT) was proposed as a solution to the reduced energy efficiency of PAM-DMT.  ...  Optical orthogonal frequency division multiplexing (OFDM) is a promising candidate for high-speed VLCs and optical wireless communications (OWCs) [2] .  ... 
doi:10.1364/oe.24.011932 pmid:27410116 fatcat:lzrhm6qbxjgntjhhbywanyf3lu

Complete Modeling of Nonlinear Distortion in OFDM-Based Optical Wireless Communication

Dobroslav Tsonev, Sinan Sinanovic, Harald Haas
2013 Journal of Lightwave Technology  
This paper presents a complete analytical framework for modeling memoryless nonlinear effects in an intensity modulation and direct detection optical wireless communication system based on orthogonal frequency  ...  Four known orthogonal-frequency-division-multiplexing-based modulation schemes for optical communication are considered in this study: direct-current-biased optical OFDM, asymmetrically clipped optical  ...  His main research interests lie in the area of optical wireless communication with an emphasis on visible light communication.  ... 
doi:10.1109/jlt.2013.2278675 fatcat:xr6kr4awrram5jrziwusdroy6y

Spectrally efficient optical orthogonal frequency division multiplexing

Arthur James Lowery
2020 Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences  
This paper charts the development of spectrally efficient forms of optical orthogonal frequency division multiplexing (OFDM) that are suited for intensity-modulated direct detection systems, such as wireless  ...  A musical analogy is also provided, which may point to how orchestral and rock music is deciphered in the brain. This article is part of the theme issue 'Optical wireless communication'.  ...  I should like to thank my colleagues and students for their collegiality and contributions to the development of optical OFDM over the years.  ... 
doi:10.1098/rsta.2019.0180 pmid:32114915 pmcid:PMC7062002 fatcat:g5wzkrsc7bfjxkueth6z647kkq

Short-range wireless optical communication using pixilated transmitters and imaging receivers

S. Hranilovic, F.R. Kschischang
2004 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577)  
In this work, we present a point-to-point, multiple-input/multiple output (MIMO) optical channel, termed the pixelated wireless optical channel, which exploits the inherent spatial diversity of the channel  ...  Spatial discrete multitone modulation is proposed for this MIMO wireless optical channel to combat the low pass spatial response of the channel.  ...  This technique allows for efficient transmission over the spatial frequency selective pixelated wireless optical channel. Fig. 3 presents a block diagram of the SDMT system.  ... 
doi:10.1109/icc.2004.1312630 dblp:conf/icc/HranilovicK04 fatcat:ef2zromyzje4hlxt6zfuumirla

PN-PAM scheme for short range optical transmission over SI-POF — an alternative to Discrete Multi-Tone (DMT) scheme

Linning Peng, Ming Liu, Maryline Hélard, Sylvain Haese
2017 Journal of the European Optical Society-Rapid Publications  
In this work a novel pseudo-noise sequence (PN) assisted pulse-amplitude modulated (PN-PAM) transmission scheme for short-range optical communication systems is proposed in this work.  ...  The experimental results show that for a transmission distance less than 50 m over SI-POF, DMT systems outperform the PAM systems.  ...  In this section we propose a novel PAM transmission scheme for optical fiber communications.  ... 
doi:10.1186/s41476-017-0048-6 fatcat:dwpirtakqjdw5dyyrqdj6rnh4u

Review of VCSELs for Complex Data-Format Transmission Beyond 100-Gbit/s

Chih-Hsien Cheng, Wei-Chi Lo, Borching Su, Chao-Hsin Wu, Gong-Ru Lin
2021 IEEE Photonics Journal  
To date, the highest allowable data rates of the single-VCSEL-based optical link for transmitting the NRZ-OOK format at 80 Gbit/s in the BtB case, the PAM-4 format at 168 Gbit/s over 150-m OM5 MMF, and  ...  frequency division multiplexing (QAM-OFDM), quadrature amplitude modulation generalized frequency division multiplexing (QAM-GFDM), bit-loading, discrete multi-tone (DMT) include optical wireless networks  ...  Encoding the VCSEL with the QAM-OFDM Data Format for Wireless and Mobile Communications In addition to the data center applications, VCSELs have also been considered for bridging the wired and wireless  ... 
doi:10.1109/jphot.2021.3104647 fatcat:wtluelatvzaqjbg65hfaiqzq5u

High-Speed Communications Over Polymer Optical Fibers for In-Building Cabling and Home Networking

A Nespola, S Abrate, R Gaudino, C Zerna, B Offenbeck, N Weber
2010 IEEE Photonics Journal  
over a target distance of 300 m, while for that which concerns POF-PLUS, we will describe a fully digital and a mixed analog-digital solution, both based on intensity modulation direct detection, for  ...  In particular, for that which concerns POF-ALL, we will describe eight-level pulse amplitude modulation (8-PAM) and orthogonal frequency-division multiplexing (OFDM) approaches for 100-Mb/s transmission  ...  Acknowledgment The authors would like to thanks all the people that contributed directly or indirectly to the results presented in this paper and, in particular, those that were active in POF-ALL and POF-PLUS  ... 
doi:10.1109/jphot.2010.2048202 fatcat:guylet65abd2jbt4sh2tx3bz5y

Recent Results From the EU POF-PLUS Project: Multi-Gigabit Transmission Over 1 mm Core Diameter Plastic Optical Fibers

C. M. Okonkwo, E. Tangdiongga, H. Yang, D. Visani, S. Loquai, R. Kruglov, B. Charbonnier, M. Ouzzif, I. Greiss, O. Ziemann, R. Gaudino, A. M. J. Koonen
2011 Journal of Lightwave Technology  
By employing a simple intensity-modulated direct-detection system with pulse amplitude or digital multi-tone modulation techniques, low-cost transceivers and easy to install large-core POFs, it is demonstrated  ...  Abstract-Recent activity to achieve multi-gigabit transmission over 1 mm core diameter graded-index and step-index plastic optical fibers for distances up to 50 meters is reported in this paper.  ...  Firecomms Ltd. is gratefully acknowledged for the RVM665T VCSEL employed in this work.  ... 
doi:10.1109/jlt.2010.2096199 fatcat:pxw2wqtmfzblhjey2cjrg4n22u

OFDM-Based Visible Light Communications [chapter]

Dobroslav Tsonev, Mohamed Sufyan Islim, Harald Haas
2016 Signals and Communication Technology  
to M-PAM PAM-DMT in order to keep the achievable data rate equivalent for systems with equivalent bandwidth.  ...  The principals of OFDM techniques for intensity modulation and direct detection (IM/DD) systems are explained in details in [1] .  ...  Introduction The physical properties of commercially available light emitting diodes (LEDs) and photodiodes (PDs), which are the foremost candidates for low-cost front-end devices in optical wireless communications  ... 
doi:10.1007/978-3-319-30201-0_12 fatcat:uxmilzjjpzeghkbxbkkjdeobee

Hybrid Adaptive Bias OFDM-Based IM/DD Visible Light Communication System

Huandong Hong, Zhengquan Li
2021 Photonics  
In this paper, a hybrid adaptive bias optical OFDM (HABO-OFDM) scheme for visible light communication (VLC) is proposed to improve spectral efficiency and power efficiency.  ...  In the proposed HABO-OFDM scheme, different optical OFDM components are combined for transmission at the same time, and the adaptive bias is designed to ensure the non-negativity, as well as obtaining  ...  In order to meet the requirement, several optical OFDM schemes have been proposed for IM/DD VLC systems.  ... 
doi:10.3390/photonics8070257 fatcat:3ssilujd2nhadcypx4mlsclkwu

Power Efficient Subcarrier Modulation for Intensity Modulated Channels

Johnny Karout, Magnus Karlsson, Erik Agrell
2010 Optics Express  
A demonstration of a dual carrier system with 16-QAM can be found in [17] , and transmission using DMT over a multimode fiber in [18] .  ...  Since the optical phase in an IM/DD system cannot be used to carry information, multilevel pulse amplitude modulation (M-PAM), which directly modulates the optical carrier, is a simpler way to achieve  ... 
doi:10.1364/oe.18.017913 pmid:20721177 fatcat:yhhh5u7f2nfovggfs2thmzyeqa

Underwater Optical Wireless Communications in Swarm Robotics: A Tutorial

Peter A. Hoeher, Jan Sticklus, Andrej Harlakin
2021 IEEE Communications Surveys and Tutorials  
Among all media suitable for wireless underwater communications, UOWC systems offer the largest bandwidth and channel capacity needed for high-speed communication in swarm networks [39] , [40] .  ...  Besides ultrasonic and optical communication, electromagnetic waves sometimes are proposed for wireless underwater communication [30] , [31] .  ...  The authors would like to thank the anonymous reviewers for constructive comments that improved the quality of the manuscript.  ... 
doi:10.1109/comst.2021.3111984 fatcat:dbu6v37agnaa7o46emq4qjjc4q
« Previous Showing results 1 — 15 out of 133 results