Joint Dimming and Communication Design for Visible Light Communication

Lou, Shun; Gong, Chen; Wu, Nan; Xu, Zhengyuan

doi:10.1109/lcomm.2017.2657740

Cited by 25 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, many modulations were put forward to achieve excellent communication and illumination performances regarding indoor VLC. In [3], multi-pulse position modulation (M-PPM), with the joint purpose of dimming and communication, was proposed to increase the spectrum efficiency and dimming control for VLC. In [4], an adaptive M-ary pulse amplitude modulation (M-PAM) for an indoor VLC system coordinated multiple LED lamps to provide users with the highest rate of data transmission.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Data Transmission with GSM-MPAPM Modulation for an Indoor VLC System

Bao

Hsu

2019

Symmetry

View full text Add to dashboard Cite

As an emerging wireless communication technique, visible light communication is experiencing a boom in the global communication field, and the dream of accessing to the Internet with light is fast becoming a reality. The objective of this study was to put forward an efficient and theoretical scheme that is based on generalized spatial modulation to reduce the bit error ratio in indoor short-distance visible light communication. The scheme was implemented while using two steps in parallel: (1) The multi-pulse amplitude and the position modulation signal were generated by combining multi-pulse amplitude modulation with multi-pulse position modulation using transmitted information, and (2) certain light-emitting diodes were activated by employing the idea of generalized spatial modulation to convey the generated multi-pulse amplitude and position modulation optical signals. Furthermore, pulse width modulation was introduced to achieve dimming control in order to improve anti-interference ability to the ambient light of the system. The two steps above involved the information theory of communication. An embedded hardware system, which was based on the C8051F330 microcomputer and included a transmitter and a receiver, was designed to verify the performance of this new scheme. Subsequently, the verifiability experiment was carried out. The results of this experiment demonstrated that the proposed theoretical scheme of transmission was feasible and could lower the bit error ratio (BER) in indoor short-distance visible light communication while guaranteeing indoor light quality.

show abstract

Section: Introductionmentioning

confidence: 99%

An Efficient Data Transmission with GSM-MPAPM Modulation for an Indoor VLC System

Bao

Hsu

2019

Symmetry

View full text Add to dashboard Cite

show abstract

“…The transmission of information in VLC relies on changing the luminous intensity, and flickering may occur during communication, which is not allowed in daily lighting and can seriously affect the user's lighting experience. VLC needs to meet the corresponding lighting requirements in both lightings on and lighting off modes [163]. • Terminal (user) mobility and handover overhead:…”

Section: • Communication and Lighting Integrationmentioning

confidence: 99%

Hybrid RF/VLC Systems: A Comprehensive Survey on Network Topologies, Performance Analyses, Applications, and Future Directions

et al. 2021

Self Cite

View full text Add to dashboard Cite

Wireless communications refer to data transmissions in unguided propagation media through the use of wireless carriers such as radio frequency (RF) and visible light (VL) waves. The rising demand for high data rates, especially, in indoor scenarios, overloads conventional RF technologies. Therefore, technologies such as millimeter waves (mmWave) and cognitive radios have been adopted as possible solutions to overcome the spectrum scarcity and capacity limitations of the conventional RF systems. In parallel, visible light communication (VLC) has been proposed as an alternative solution, where a light source is used for both illumination and data transmission. In comparison to RF links, VLC links present a very high bandwidth that allows much higher data rates. VLC exhibits also immunity to interference from electromagnetic sources, has unlicensed channels, is a very low power consumption system, and has no health hazard. VLC is appealing for a wide range of applications including reliable communications with low latency such as vehicle safety communication. Despite the major advantages of VLC technology and a variety of its applications, its use has been hampered by its cons such as its dependence on a line of sight connectivity. Recently, hybrid RF/VLC systems were proposed to take advantage of the high capacity of VLC links and better connectivity of RF links. Thus, hybrid RF/VLC systems are envisioned as a key enabler to improve the user rates and mobility on the one hand and to optimize the capacity, interference and power consumption of the overall network on the other hand. This paper seeks to provide a detailed survey of hybrid RF/VLC systems. This paper represents an overview of the current developments in the hybrid RF/VLC systems, their benefits and limitations for both newcomers and expert researchers. INDEX TERMS Radio frequency (RF), visible light communication (VLC), hybrid RF/VLC, wireless fidelity (Wi-Fi), hybrid networks, hybrid RF/VLC environments.

show abstract

“…The dimming control is a desirable process for the illumination purpose [65]. For power saving, LEDs can be dimmed to desired levels, using appropriate modulation schemes [37], such as multi-pulse position modulation (M-PPM) [66]; or variable OOK [67].…”

Section: ) Required Illumination Constraintsmentioning

confidence: 99%

On Optimizing VLC Networks for Downlink Multi-User Transmission: A Survey

Obeed

Salhab

Alouini

et al. 2019

IEEE Commun. Surv. Tutorials

193

101

View full text Add to dashboard Cite

The evolving explosion in high data rate services and applications will soon require the use of untapped, abundant unregulated spectrum of the visible light for communications to adequately meet the demands of the fifth-generation (5G) mobile technologies. Radio-frequency (RF) networks are proving to be scarce to cover the escalation in data rate services. Visible light communication (VLC) has emerged as a great potential solution, either in replacement of, or complement to, existing RF networks, to support the projected traffic demands. Despite of the prolific advantages of VLC networks, VLC faces many challenges that must be resolved in the near future to achieve a full standardization and to be integrated to future wireless systems.Here, we review the new, emerging research in the field of VLC networks and lay out the challenges, technological solutions, and future work predictions. Specifically, we first review the VLC channel capacity derivation, discuss the performance metrics and the associated variables; the optimization of VLC networks are also discussed, including resources and power allocation techniques, user-to-access point (AP) association and APs-toclustered-users-association, APs coordination techniques, nonorthogonal multiple access (NOMA) VLC networks, simultaneous energy harvesting and information transmission using the visible light, and the security issue in VLC networks. Finally, we propose several open research problems to optimize the various VLC networks by maximizing either the sum rate, fairness, energy efficiency, secrecy rate, or harvested energy.

show abstract

Joint Dimming and Communication Design for Visible Light Communication

Cited by 25 publications

References 16 publications

An Efficient Data Transmission with GSM-MPAPM Modulation for an Indoor VLC System

An Efficient Data Transmission with GSM-MPAPM Modulation for an Indoor VLC System

Hybrid RF/VLC Systems: A Comprehensive Survey on Network Topologies, Performance Analyses, Applications, and Future Directions

On Optimizing VLC Networks for Downlink Multi-User Transmission: A Survey

Contact Info

Product

Resources

About