FFT-Based Frequency Detection and Interference Analysis for NLOS MIMO-OCC

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F24%3A00376148" target="_blank" >RIV/68407700:21230/24:00376148 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1109/ACCESS.2024.3428347" target="_blank" >https://doi.org/10.1109/ACCESS.2024.3428347</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/ACCESS.2024.3428347" target="_blank" >10.1109/ACCESS.2024.3428347</a>

Jazyk výsledku

angličtina

Název v původním jazyce

FFT-Based Frequency Detection and Interference Analysis for NLOS MIMO-OCC

Popis výsledku v původním jazyce

In this paper, we provide a solution based on fast Fourier Transform (FFT) for frequency detection and interference analysis in a non-line-of-sight (NLOS) multiple-input multiple-output (MIMO) optical camera communications (OCC) link. The proposed NLOS MIMO-OCC uses two organic light-emitting diodes (OLEDs) and a camera as transmitters (Txs) and the receiver, respectively, and reflections from various surfaces such as plain wall, paper and wooden surfaces. In this paper, for the first time, we analyze the performance of NLOS MIMO-OCC for two indoor scenarios utilizing two OLED Txs that are in phase and modulated at the same modulation frequency fs and especially when they are out of phase and under different fs . We carry out FFT for fs detection and interference analysis for OLEDs operating at different phases and fs . To analyze the performance of NLOS MIMO-OCC, first FFT-based fs detection is performed to identify Txs followed by evaluation of the reception success rates Rrs for a range of camera exposure times texp and the gain Gv for a given fs . The results show that for two OLEDs in phase and different phases at texp of 1500, Gv of 45 dB and a link span of 2 m, Rrs of 94% is achieved at fs of 600 Hz for the plain wall and paper reflectors. For interference analysis, the proposed FFT analysis gives accurate, i.e., 100 % fs detection in all the above cases.

Název v anglickém jazyce

FFT-Based Frequency Detection and Interference Analysis for NLOS MIMO-OCC

Popis výsledku anglicky

In this paper, we provide a solution based on fast Fourier Transform (FFT) for frequency detection and interference analysis in a non-line-of-sight (NLOS) multiple-input multiple-output (MIMO) optical camera communications (OCC) link. The proposed NLOS MIMO-OCC uses two organic light-emitting diodes (OLEDs) and a camera as transmitters (Txs) and the receiver, respectively, and reflections from various surfaces such as plain wall, paper and wooden surfaces. In this paper, for the first time, we analyze the performance of NLOS MIMO-OCC for two indoor scenarios utilizing two OLED Txs that are in phase and modulated at the same modulation frequency fs and especially when they are out of phase and under different fs . We carry out FFT for fs detection and interference analysis for OLEDs operating at different phases and fs . To analyze the performance of NLOS MIMO-OCC, first FFT-based fs detection is performed to identify Txs followed by evaluation of the reception success rates Rrs for a range of camera exposure times texp and the gain Gv for a given fs . The results show that for two OLEDs in phase and different phases at texp of 1500, Gv of 45 dB and a link span of 2 m, Rrs of 94% is achieved at fs of 600 Hz for the plain wall and paper reflectors. For interference analysis, the proposed FFT analysis gives accurate, i.e., 100 % fs detection in all the above cases.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

IEEE Access

ISSN

2169-3536

e-ISSN

2169-3536

Svazek periodika

12

Číslo periodika v rámci svazku

July

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

99137-99148

Kód UT WoS článku

001276357000001

EID výsledku v databázi Scopus

2-s2.0-85199039345