Optimized photoelectric receiver to enhance modulation bandwidth of visible light communication system

Huang, Hua‐Dong; Xie, Xin; Wen, Rulian; Chen, Zeliang; Wang, Chao; Wang, Hong

doi:10.1007/s11082-017-1283-1

Cited by 7 publications

(2 citation statements)

References 11 publications

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“…The 3‐dB modulation bandwidth of the PCB packaged white‐LED module in a VLC system is evaluated using a similar measurement platform established in our previous work . A vector network analyzer (VNA) sends an alternated‐current (AC) signal to the white‐LED module via a Bias‐Tee, then the white‐light with the variation of bright and shade passes through a collimating lens system and an optical filter.…”

Section: Methodsmentioning

confidence: 99%

Characteristics of Micro‐Size Light‐Emitting Diode for Illumination and Visible Light Communication

Huang

et al. 2018

Physica Status Solidi (a)

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The white light‐emitting diode (LED) modules, in which the GaN‐based blue‐LED chip with 4 × 4 arrayed pixels are packaged with chip‐on‐board technique and welded on a print circuit board, are fabricated for both illumination and visible light communication (VLC). The effects of the mesa size on the characteristic features are explored. It shows that the pixels with small size can sustain high saturated current density. Under the saturated current density, the highest luminous flux of 278.4 lm can be obtained by using the largest pixel of 160 µm‐diameter, or the highest 3‐dB modulation bandwidth of 127.3 MHz can be obtained by using the smallest pixels of 60 µm‐diameter. In case the white‐LED module works for a long time, the injected current density should be far away from the saturated current density. On condition that the 3‐dB modulation bandwidth of 100 MHz is required, the white‐LED module with 100 µm‐diameter pixels is proposed and the luminous flux can reach 164.8 lm. Subsequently, the electrode size is optimized to get higher luminous flux. By enlarging the p‐electrode, the white‐LED module with 120 µm‐diameter pixels can achieve the luminous flux of 235.2 lm while the 3‐dB modulation bandwidth holds 100 MHz.

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Section: Methodsmentioning

confidence: 99%

Characteristics of Micro‐Size Light‐Emitting Diode for Illumination and Visible Light Communication

Huang

et al. 2018

Physica Status Solidi (a)

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“…The solid line with arrows represents the communication between nodes, the long dotted arrow represents the input bandwidth, the short dotted arrow represents the output bandwidth, and the elliptic region inside the node represents compute resources. Each operation occupies the resources of the host part [20][21].…”

Section: Shared Network Communication System Model In the Internet Of Things Environmentmentioning

confidence: 99%

Optimal Algorithm for Shared Network Communication Bandwidth in IoT Applications

Mhmed¹,

Al-Masri²

2021

IJWAC

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In recent years, a variety of wired and wireless network communication protocols in the field of industrial control have become increasingly mature. The purpose of this paper is to provide a Shared network communication bandwidth optimization management algorithm for large-scale industrial networked control systems in Internet of things applications. This algorithm is based on the generalized geometric convex optimization method and can realize the optimal allocation of Shared network communication bandwidth resources. L2 networked control systems is used in this paper for the establishment of various numerical relations between the control performance and the communication network parameters. Based on the generalized geometric convex optimization method for the numerical relationship between convex analysis and fitting, convexity, and with the convex analysis and the numerical relationship between convexity fitting as constraint conditions, the results of integrity for networked control systems with large-scale resource allocation target will share the optimal management of network resources as a generalized geometric convex optimization problem. Using convex optimization software package for optimizing the optimal global solution of management problem, i. e. the optimal allocation of resources, the algorithm realizes the stability of each networked control system and achieve optimal L2 control performance. It is concluded that the predetermined transmission rate between the network node one and network node two, the data flow information sent by the network node two to the network node one is read, the delay time and packet loss rate between the two nodes are determined, the delay time is reduced by about 8 seconds, and the packet loss rate is greatly reduced by 78%.

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Compromise between illumination performance and modulation bandwidth for micro-size white light-emitting diode by selecting injected current

Huang

et al. 2019

Appl. Phys. A

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Optimized photoelectric receiver to enhance modulation bandwidth of visible light communication system

Cited by 7 publications

References 11 publications

Characteristics of Micro‐Size Light‐Emitting Diode for Illumination and Visible Light Communication

Characteristics of Micro‐Size Light‐Emitting Diode for Illumination and Visible Light Communication

Optimal Algorithm for Shared Network Communication Bandwidth in IoT Applications

Compromise between illumination performance and modulation bandwidth for micro-size white light-emitting diode by selecting injected current

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