Throughput optimization for IR-LEDs in an optical wireless link

J.P. Linnartz; Thiago Bitencourt Cunha; Diego Vargas Romero; Xiong Deng

doi:10.1109/ICC45855.2022.9838739

Throughput optimization for IR-LEDs in an optical wireless link

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

5 Citations (Scopus)

11 Downloads (Pure)

Abstract

This paper addresses the question of whether an optical wireless communication (OWC) LiFi system preferably uses LEDs near their most efficient operating point, which is preferred for environmentally-friendly highly efficient illumination, or that one should preferably drive the LED into its droop regime to speed up its response. In fact, additional non-radiative recombination speeds up the LED response to modulation but spoils efficiency. We introduce the differential (Internal and External) Quantum Efficiency (dIQE; dEQE), as a particular derivative of quantum efficiencies. It quantifies the efficiency at which a current modulation translates into an optical signal.
We optimize the current density, thus how deeply the LED is to be driven into droop, using DC-offset (DCO) OFDM throughput expressions for the first--order low-pass LED response. Short-range small-coverage systems prefer high current densities to achieve very high throughputs. LiFi with wide opening angles, e.g. covering tens of square meters are better off with a high dIQE, thus lower current densities.

Original language	English
Title of host publication	ICC 2022 - IEEE International Conference on Communications
Publisher	Institute of Electrical and Electronics Engineers
Pages	3826-3831
Number of pages	6
ISBN (Electronic)	978-1-5386-8347-7
DOIs	https://doi.org/10.1109/ICC45855.2022.9838739
Publication status	Published - 11 Aug 2022
Event	2022 IEEE International Conference on Communications (ICC 2022) - Seoul, South Korea , Seoul, Korea, Democratic People's Republic of Duration: 16 May 2022 → 20 May 2022 https://icc2022.ieee-icc.org/

Conference

Conference	2022 IEEE International Conference on Communications (ICC 2022)
Abbreviated title	ICC 2022
Country/Territory	Korea, Democratic People's Republic of
City	Seoul
Period	16/05/22 → 20/05/22
Other	Intelligent Connectivity for Smart World
Internet address	https://icc2022.ieee-icc.org/

Keywords

OWC, LED, OFDM, throughput, ABC-model, EQE, nonlinear channel.
ABC-model
OFDM
nonlinear channel
EQE
LED
OWC
throughput

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10.1109/ICC45855.2022.9838739

Cite this

@inproceedings{e3af7b0c0ef442f298007d734d4ae94d,

title = "Throughput optimization for IR-LEDs in an optical wireless link",

abstract = "This paper addresses the question of whether an optical wireless communication (OWC) LiFi system preferably uses LEDs near their most efficient operating point, which is preferred for environmentally-friendly highly efficient illumination, or that one should preferably drive the LED into its droop regime to speed up its response. In fact, additional non-radiative recombination speeds up the LED response to modulation but spoils efficiency. We introduce the differential (Internal and External) Quantum Efficiency (dIQE; dEQE), as a particular derivative of quantum efficiencies. It quantifies the efficiency at which a current modulation translates into an optical signal. We optimize the current density, thus how deeply the LED is to be driven into droop, using DC-offset (DCO) OFDM throughput expressions for the first--order low-pass LED response. Short-range small-coverage systems prefer high current densities to achieve very high throughputs. LiFi with wide opening angles, e.g. covering tens of square meters are better off with a high dIQE, thus lower current densities.",

keywords = "OWC, LED, OFDM, throughput, ABC-model, EQE, nonlinear channel., ABC-model, OFDM, nonlinear channel, EQE, LED, OWC, throughput",

author = "J.P. Linnartz and \{Bitencourt Cunha\}, Thiago and \{Vargas Romero\}, Diego and Xiong Deng",

year = "2022",

month = aug,

day = "11",

doi = "10.1109/ICC45855.2022.9838739",

language = "English",

pages = "3826--3831",

booktitle = "ICC 2022 - IEEE International Conference on Communications",

publisher = "Institute of Electrical and Electronics Engineers",

address = "United States",

note = "2022 IEEE International Conference on Communications (ICC 2022), ICC 2022 ; Conference date: 16-05-2022 Through 20-05-2022",

url = "https://icc2022.ieee-icc.org/",

}

Linnartz, JP , Bitencourt Cunha, T , Vargas Romero, D & Deng, X 2022, Throughput optimization for IR-LEDs in an optical wireless link. in ICC 2022 - IEEE International Conference on Communications., 9838739, Institute of Electrical and Electronics Engineers, pp. 3826-3831, 2022 IEEE International Conference on Communications (ICC 2022), Seoul, Korea, Democratic People's Republic of, 16/05/22. https://doi.org/10.1109/ICC45855.2022.9838739

Throughput optimization for IR-LEDs in an optical wireless link. / Linnartz, J.P.; Bitencourt Cunha, Thiago ; Vargas Romero, Diego et al.
ICC 2022 - IEEE International Conference on Communications. Institute of Electrical and Electronics Engineers, 2022. p. 3826-3831 9838739.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Throughput optimization for IR-LEDs in an optical wireless link

AU - Linnartz, J.P.

AU - Bitencourt Cunha, Thiago

AU - Vargas Romero, Diego

AU - Deng, Xiong

PY - 2022/8/11

Y1 - 2022/8/11

N2 - This paper addresses the question of whether an optical wireless communication (OWC) LiFi system preferably uses LEDs near their most efficient operating point, which is preferred for environmentally-friendly highly efficient illumination, or that one should preferably drive the LED into its droop regime to speed up its response. In fact, additional non-radiative recombination speeds up the LED response to modulation but spoils efficiency. We introduce the differential (Internal and External) Quantum Efficiency (dIQE; dEQE), as a particular derivative of quantum efficiencies. It quantifies the efficiency at which a current modulation translates into an optical signal. We optimize the current density, thus how deeply the LED is to be driven into droop, using DC-offset (DCO) OFDM throughput expressions for the first--order low-pass LED response. Short-range small-coverage systems prefer high current densities to achieve very high throughputs. LiFi with wide opening angles, e.g. covering tens of square meters are better off with a high dIQE, thus lower current densities.

AB - This paper addresses the question of whether an optical wireless communication (OWC) LiFi system preferably uses LEDs near their most efficient operating point, which is preferred for environmentally-friendly highly efficient illumination, or that one should preferably drive the LED into its droop regime to speed up its response. In fact, additional non-radiative recombination speeds up the LED response to modulation but spoils efficiency. We introduce the differential (Internal and External) Quantum Efficiency (dIQE; dEQE), as a particular derivative of quantum efficiencies. It quantifies the efficiency at which a current modulation translates into an optical signal. We optimize the current density, thus how deeply the LED is to be driven into droop, using DC-offset (DCO) OFDM throughput expressions for the first--order low-pass LED response. Short-range small-coverage systems prefer high current densities to achieve very high throughputs. LiFi with wide opening angles, e.g. covering tens of square meters are better off with a high dIQE, thus lower current densities.

KW - OWC, LED, OFDM, throughput, ABC-model, EQE, nonlinear channel.

KW - ABC-model

KW - OFDM

KW - nonlinear channel

KW - EQE

KW - LED

KW - OWC

KW - throughput

UR - https://www.scopus.com/pages/publications/85137269270

U2 - 10.1109/ICC45855.2022.9838739

DO - 10.1109/ICC45855.2022.9838739

M3 - Conference contribution

SP - 3826

EP - 3831

BT - ICC 2022 - IEEE International Conference on Communications

PB - Institute of Electrical and Electronics Engineers

T2 - 2022 IEEE International Conference on Communications (ICC 2022)

Y2 - 16 May 2022 through 20 May 2022

ER -

Throughput optimization for IR-LEDs in an optical wireless link

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Keywords

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