Visible light signal strength optimization using genetic algorithm in non-line-of-sight optical wireless communication

2018 ◽  
Vol 426 ◽  
pp. 511-518 ◽  
Author(s):  
Tahesin Samira Delwar ◽  
Willy Anugrah Cahyadi ◽  
Yeon-Ho Chung
Keyword(s):  
Genetic Algorithm ◽  
Wireless Communication ◽  
Visible Light ◽  
Signal Strength ◽  
Light Signal ◽  
Line Of Sight ◽  
Optical Wireless Communication ◽  
Optical Wireless ◽  
Non Line Of Sight

scholarly journals Analisis Performansi Multi User Detection pada Kanal NLOS untuk Sistem NOMA-VLC

2021 ◽  
Vol 9 (2) ◽  
pp. 482
Author(s):  
BIMA SURYA PRATAMA ◽  
NACHWAN MUFTI ADRIANSYAH ◽  
BRIAN PAMUKTI
Keyword(s):  
Wireless Communication ◽  
Visible Light ◽  
Interference Cancellation ◽  
Multiple Access ◽  
Data Rate ◽  
Line Of Sight ◽  
Optical Wireless Communication ◽  
Optical Wireless ◽  
Better Than ◽  
Non Line Of Sight

ABSTRAKNon-orthogonal multiple access (NOMA), mulai diteliti untuk dapat digunakan sebagai teknik multiple access yang efektif pada jaringan 5G karena teknik ini dapat menghemat bandwidth modulasi. Pada penelitian ini, NOMA diterapkan untuk sistem downlink Visible Light Communivation (VLC). Kami telah melakukan analisis performansi Multi-User Detection (MUD) pada kanal propagasi Non-Line of Sight (NLOS) dengan mempertimbangkan efek reflektor dan efek bayangan (shadowing). Kami juga mempertimbangkan teknik MUD yang digunakan pada penelitian ini yaitu Succesive Interference Cancellation (SIC). Setelah simulasi yang ekstensif, kami menemukan bahwa dengan penerapan SIC sebagai MUD pada sistem NOMA-VLC lebih baik dibandingkan dengan tanpa NOMA. Selain itu, kami juga memperoleh peningkatan data rate sebesar 72 %.Kata kunci: VLC, NOMA, NLOS, MUD, Optical Wireless Communication. ABSTRACTNon-orthogonal multiple access (NOMA), began to be studied to be used as an effective multiple access technique on 5G networks because this technique can save modulation bandwidth. In this research, NOMA is applied to the Visible Light Communivation (VLC) downlink system. We have performed a Multi-User Detection (MUD) performance analysis on Non-Line of Sight (NLOS) propagation channels by considering the reflector and shadowing effects. We also consider the MUD technique used in this study, namely Successive Interference Cancellation (SIC). After extensive simulations, we found that the application of SIC as MUD to the NOMA-VLC system is better than without NOMA. In addition, we also achieve an increase in data rate of 72%.Keywords: VLC, NOMA, NLOS, MUD, Optical Wireless Communication.

scholarly journals The usage of optical wireless communication for an indoor channel link

2019 ◽  
Vol 20 (5) ◽  
pp. 13-22
Author(s):  
Hasan J. Hasan ◽  
Zeyad Adnan Saleh ◽  
Mazin Ali Abd Ali
Keyword(s):  
Wireless Communication ◽  
New Technology ◽  
Research Field ◽  
Assessment System ◽  
Line Of Sight ◽  
Optical Wireless Communication ◽  
Optical Wireless ◽  
White Leds ◽  
Quality Factor Q ◽  
Non Line Of Sight

Optical wireless communication using white LEDs is the latest research field for next-generation communication by using new technology termed as Light Fidelity or more commonly known as Li-Fi. This term indicate to the data transition in an indoor channel. In this paper we investigated the performance of  Li-Fi for indoor channel and take into account the line of the sight (LOS) and non line of sight (NLOS). There are different metrics used to assessment system such as quality factor (Q-Factor) and bet error rate (BER). The results show that the Li-Fi technology can be working with a good performance. Also, the increase in optical link leads to a weak in the record signal

scholarly journals Long distance non-line-of-sight (NLOS) visible light signal detection based on rolling-shutter-patterning of mobile-phone camera

2017 ◽  
Vol 25 (9) ◽  
pp. 10103 ◽  
Author(s):  
Wei-Chung Wang ◽  
Chi-Wai Chow ◽  
Liang-Yu Wei ◽  
Yang Liu ◽  
Chien-Hung Yeh
Keyword(s):  
Visible Light ◽  
Signal Detection ◽  
Mobile Phone ◽  
Light Signal ◽  
Line Of Sight ◽  
Long Distance ◽  
Mobile Phone Camera ◽  
Non Line Of Sight
Sign in / Sign up

Export Citation Format

Share Document