Performance enhancement for a non-orthogonal multiple access system using 4 × 4 multiple-input multiple-output visible-light communication

Elewah, Ibrahim A.; Jasman, Faezah; Ng, Shashiong

doi:10.1117/1.oe.59.12.126104

Cited by 4 publications

(2 citation statements)

References 32 publications

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“…The authors in [27] applied a simplified gain ratio power allocation that obtains the channel gains by using a look-up table to ensure efficiency and fairness of resource distribution among the users. In [28], a multi-user VLC system with 4 × 4 multiple-input multiple-output (MIMO) was investigated. The gain ratio power allocation scheme was introduced to realize an effective and less complex power allocation scheme.…”

Section: Related Workmentioning

confidence: 99%

Hybrid NOMA-Based ACO-FBMC/OQAM for Next-Generation Indoor Optical Wireless Communications Using LiFi Technology

Hesham¹,

Ismail

2021

Preprint

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The light fidelity (LiFi) has been successfully used to achieve high data transfer rates, high security, great availability, and low interference. In this paper, we propose a LiFi system consisting of a combination of non-orthogonal multi-access (NOMA), asymmetrically-clipped optical (ACO) and filter bank multicarrier (FBMC) techniques combined with offset quadrature amplitude modulation (OQAM). The paper also applies a $\mu$-law companding approach for a high peak to average power ratio (PAPR) reduction of the FBMC/OQAM scheme. The combination of NOMA, ACO-FBMC/OQAM, and $\mu$-law companding allows a significant increase in throughput and a significant reduction in non-served users. An appropriate algorithm is developed considering two scenarios, maximize the throughput and minimize the number of blocked (non-served) users. The results show that the throughput of the system can be increased by $1.8$ compared to FBMC and OFDM. Furthermore, the proposed system reduces the number of blocked users below $10\%$, while the system can provide $30\%$ or $60\%$ in case only the FBMC or OFDM is used, respectively.

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Section: Related Workmentioning

confidence: 99%

Hybrid NOMA-Based ACO-FBMC/OQAM for Next-Generation Indoor Optical Wireless Communications Using LiFi Technology

Hesham¹,

Ismail

2021

Preprint

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show abstract

“…The authors in Zhao et al (2020) applied a simplified gain ratio power allocation that obtains the channel gains by using a lookup table to ensure efficiency and fairness of resource distribution among the users. In Elewah et al (2020), a multi-user VLC system with 4 × 4 multiple-input multiple-output (MIMO) was investigated. The gain ratio power allocation scheme was introduced to realize an effective and less complex power allocation scheme.…”

Section: Introductionmentioning

confidence: 99%

Hybrid NOMA-based ACO-FBMC/OQAM for next-generation indoor optical wireless communications using LiFi technology

Hesham

Ismail

2022

Opt Quant Electron

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Light fidelity (LiFi) has successfully achieved high data transfer rates, high security, great availability, and low interference. In this paper, we propose a LiFi system consisting of a combination of non-orthogonal multi-access (NOMA), asymmetrically-clipped optical (ACO), and filter bank multicarrier (FBMC) techniques combined with offset quadrature amplitude modulation (OQAM). The paper also applies a $$\mu $$ μ -law companding approach for a high peak to average power ratio (PAPR) reduction of the FBMC/OQAM scheme. The combination of NOMA, ACO-FBMC/OQAM, and $$\mu $$ μ -law companding allows a significant increase in throughput and a significant reduction in unserved users. Considering two scenarios, an appropriate algorithm is developed to maximize the throughput and minimize the number of blocked (unserved) users. The results show that the overall system throughput could be increased by 1.8 compared to FBMC, OFDM, and OFDM-NOMA. Furthermore, the proposed system reduces the number of unserved users below $$10\%$$ 10 % , while the system can provide 30 or $$60\%$$ 60 % in case only OFDM-NOMA, FBMC, or OFDM is applied.

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DCO-FBMC-based VLC NOMA with SIC cancellation: enhancing multi-user communication efficiency

Dwivedi,

Kumar,

Tanwar

et al. 2024

J Opt

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Performance enhancement for a non-orthogonal multiple access system using 4 × 4 multiple-input multiple-output visible-light communication

Cited by 4 publications

References 32 publications

Hybrid NOMA-Based ACO-FBMC/OQAM for Next-Generation Indoor Optical Wireless Communications Using LiFi Technology

Hybrid NOMA-Based ACO-FBMC/OQAM for Next-Generation Indoor Optical Wireless Communications Using LiFi Technology

Hybrid NOMA-based ACO-FBMC/OQAM for next-generation indoor optical wireless communications using LiFi technology

DCO-FBMC-based VLC NOMA with SIC cancellation: enhancing multi-user communication efficiency

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