Spatial frequency-based angular behavior of a short-range flicker-free MIMO–OCC link

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F20%3A00343873" target="_blank" >RIV/68407700:21230/20:00343873 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1364/AO.404378" target="_blank" >https://doi.org/10.1364/AO.404378</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1364/AO.404378" target="_blank" >10.1364/AO.404378</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Spatial frequency-based angular behavior of a short-range flicker-free MIMO–OCC link

Popis výsledku v původním jazyce

In this paper, we provide a solution based on spatial frequency ????sf to study the angular behavior of a flicker-free, short-range indoor multiple–input multiple–output (MIMO) optical camera communications (OCC) link. We focus on the experimental investigation of OCC’s performance for the transmitters (Txs) [i.e., light-emitting diode (LED) based arrays] located at the same and different distances from the receiver (Rx) with the off-axis rotation angle ????. We have used two 8x8 distributed LED arrays and a commercial low-cost complementary metal-oxide-semiconductor (CMOS) Raspberry Pi camera with the rolling-shutter capturing mode as the Tx and Rx, respectively. The image and the respective communications link quality metrics are measured in terms of the peak signal-to-noise ratio (PSNR) and the rate of successfully received bits with respect to ????sf for different camera shutter speeds (SS). A CMOS image sensor noise characterization is carried in terms of the signal-to-noise ratio (SNR) and PSNR. The proposed study provides a 100% success rate in data reception at the optimum ???? of 50° at lower captured values of ????sf, which is projected onto the image sensor in the form of pixels. Moreover, the effect of channel saturation over ????sf is studied with respect to ???? and SS and we show that, for ???? exceeding the optimum value along transmission range, the ????sf area of the Txs reduces to less than ~50% of the captured Tx units at ???? of 0°, where no data can be fully recovered.

Název v anglickém jazyce

Spatial frequency-based angular behavior of a short-range flicker-free MIMO–OCC link

Popis výsledku anglicky

In this paper, we provide a solution based on spatial frequency ????sf to study the angular behavior of a flicker-free, short-range indoor multiple–input multiple–output (MIMO) optical camera communications (OCC) link. We focus on the experimental investigation of OCC’s performance for the transmitters (Txs) [i.e., light-emitting diode (LED) based arrays] located at the same and different distances from the receiver (Rx) with the off-axis rotation angle ????. We have used two 8x8 distributed LED arrays and a commercial low-cost complementary metal-oxide-semiconductor (CMOS) Raspberry Pi camera with the rolling-shutter capturing mode as the Tx and Rx, respectively. The image and the respective communications link quality metrics are measured in terms of the peak signal-to-noise ratio (PSNR) and the rate of successfully received bits with respect to ????sf for different camera shutter speeds (SS). A CMOS image sensor noise characterization is carried in terms of the signal-to-noise ratio (SNR) and PSNR. The proposed study provides a 100% success rate in data reception at the optimum ???? of 50° at lower captured values of ????sf, which is projected onto the image sensor in the form of pixels. Moreover, the effect of channel saturation over ????sf is studied with respect to ???? and SS and we show that, for ???? exceeding the optimum value along transmission range, the ????sf area of the Txs reduces to less than ~50% of the captured Tx units at ???? of 0°, where no data can be fully recovered.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Optics

ISSN

1559-128X

e-ISSN

2155-3165

Svazek periodika

59

Číslo periodika v rámci svazku

33

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

10357-10368

Kód UT WoS článku

000592671500021

EID výsledku v databázi Scopus

2-s2.0-85096227321