Pixelated VLC-Backscattering for Self-Charging Indoor IoT Devices

@article{Shao2017PixelatedVF,
  title={Pixelated VLC-Backscattering for Self-Charging Indoor IoT Devices},
  author={Sihua Shao and Abdallah Khreishah and Hany Elgala},
  journal={IEEE Photonics Technology Letters},
  year={2017},
  volume={29},
  pages={177-180}
}
Visible light communication (VLC) backscatter has been proposed as a wireless access option for Internet of Things. However, the throughput of the state-of-the-art VLC backscatter is limited by simple single-carrier pulsed modulation scheme, such as ON-OFF keying (OOK). In this letter, a novel pixelated VLC backscatter is proposed and implemented to overcome the channel capacity limitation. In particular, multiple smaller VLC backscatters are integrated to generate multi-level signals, which… 

Figures and Tables from this paper

Turboboosting Visible Light Backscatter Communication
TLDR
RetroTurbo is a VLBC system dedicated for turboboosting data rate, designed and implemented with a pair of novel modulation schemes, namely delayed superimposition modulation (DSM) and polarization-based QAM (PQAM), to push the rate limit.
Demo: Improving Visible Light Backscatter Communication with Delayed Superimposition Modulation
Visible light backscatter communication (VLBC) has shown great potential in IoT field. LCD, often used as optical modulator in a VLBC system, mainly limits the data rate to sub-Kbps due to its slow
Modeling the large-scale visible light backscatter communication network
TLDR
The network topology is modeled using the analytical tractable generalized Gauss-Poisson process (GPP) under some justifiable assumptions, yielding a lower bound for practical VL-BackCom network with irregular deployment.
PassiveVLC: Enabling Practical Visible Light Backscatter Communication for Battery-free IoT Applications
TLDR
This paper effectively synthesizes off-the-shelf optical components into a sub- mW low power visible light passive transmitter along with a retroreflecting uplink design dedicated for power constrained mobile/IoT devices, and design, implement and evaluate PassiveVLC, a novel visible light backscatter communication system.
Poster: Polarization-based QAM for Visible Light Backscatter Communication
TLDR
A new modulation scheme called polarization-based quadrature amplitude modulation (PQAM) is proposed, which constructs the orthogonal basis in the polarization domain and provides 2x throughput gain with arbitrary relative orientation.
A principled design for passive light communication
TLDR
ChromaLux uncovers the existence of a transient state where the switching time can be reduced by an order of magnitude without lowering the contrast significantly, improving both range and data rate.
Powering the Internet of Things through Light Communication
TLDR
This article proposes to use LiFi, which is based on off-the-shelf LEDs, as an enabler for the IoT in indoor environments, and presents LiFi4IoT, a system which provides three main services that the radio frequency (RF) IoT networks struggle to offer.
Non-Coherent and Backscatter Communications: Enabling Ultra-Massive Connectivity in the Era Beyond 5G
TLDR
A framework that is fundamentally based on the amalgamation of non-coherent and backscatter communications (BsC) is proposed, aimed at delivering the anticipated massive connectivity requirements with optimal energy and spectral efficiency besides low hardware cost in 6th generation (6G) wireless networks.
Using Static Objects for Passive Communication with Sunlight
TLDR
The objective of this thesis is to use sunlight to setup a green communication channel by using smart materials to toggle sunlight and use it for wireless communication.
Non-Coherent and Backscatter Communications: Enabling Ultra-Massive Connectivity in 6G Wireless Networks
TLDR
An enabling framework for 6G networks, which utilizes two emerging technologies, namely, non-coherent communications and backscatter communications (BsC), and a comprehensive review of their state-of-the-art is conducted.
...
...

References

SHOWING 1-10 OF 25 REFERENCES
An Indoor Hybrid WiFi-VLC Internet Access System
TLDR
This paper proposes and implements a hybrid solution in which the uplink challenge is resolved by the use of an asymmetric RF-VLC combination, and the integrated system outperforms conventional WiFi for crowded (congested) multiuser environments in term of throughput.
Retro-VLC: Enabling Battery-free Duplex Visible Light Communication for Mobile and IoT Applications
TLDR
RetroVLC is presented, a duplex VLC system that enables a battery-free device to perform bi-directional communications over a shared light carrier across the uplink and downlink.
Design and analysis of a visible-light-communication enhanced WiFi system
TLDR
The hybrid WiFi-VLC system is proposed, which outperforms the conventional WiFi for crowded environments in terms of throughput and Web page loading time, and the further improved performance of the aggregated system when considering the blocking duration and the distance between the access point and the user device is demonstrated.
Modulated retro reflector for VLC applications
TLDR
The main conclusion from this study is that a nanocomposite based MRR can save power, complexity, dimensions and weight in comparison to standard communication links, this fact is very important for mobile platforms.
Coexistence of WiFi and LiFi toward 5G: concepts, opportunities, and challenges
TLDR
The general characteristics of WiFi and VLC (or LiFi) are described and a practical framework for both technologies to coexist is demonstrated, to explore the existing research activity in this area and articulate current and future research challenges.
Ambient backscatter: wireless communication out of thin air
TLDR
The design of a communication system that enables two devices to communicate using ambient RF as the only source of power is presented, enabling ubiquitous communication where devices can communicate among themselves at unprecedented scales and in locations that were previously inaccessible.
BackFi: High Throughput WiFi Backscatter
TLDR
It is shown that it is possible to design devices and WiFi APs such that the WiFi AP in the process of transmitting data to normal WiFi clients can decode backscatter signals which the devices generate by modulating information on to the ambient WiFi transmission.
Wi-Fi backscatter
TLDR
Wi-Fi Backscatter is presented, a novel communication system that bridges RF-powered devices with the Internet and shows that it is possible to reuse existing Wi-Fi infrastructure to provide Internet connectivity to RF- powered devices.
Wireless optical communication systems
TLDR
The author provides a unifying framework for signalling design which allows the channel constraints to be represented geometrically and permits the use of modem design principles from electrical channels.
Optical domain digital-to-analog converter for visible light communications using LED arrays [Invited]
In this paper, we describe a new type of digital-to-analog converter (DAC) for optical wireless communication. Conversion occurs in the optical rather than the electrical domain. The overall
...
...