Effective Receiver Design for MIMO Visible Light Communication with Quadrichromatic LEDs

Tran, Manh Le; Kim, Sung Hwan

doi:10.3390/electronics8121383

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…Two LEDs transmit data and the demodulation was performed by determining the region of interest by image processing. An effective receiver design was proposed in [ 153 ]. An optimization method was proposed to maximize the minimum Euclidean distance of the received signal.…”

Section: Mimo Communication Study Categoriesmentioning

confidence: 99%

A Comprehensive Survey on MIMO Visible Light Communication: Current Research, Machine Learning and Future Trends

Sejan

Rahman

Aziz

et al. 2023

Sensors

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Visible light communication (VLC) has contributed new unused spectrum in addition to the traditional radio frequency communication and can play a significant role in wireless communication. The adaptation of VLC technology enhances wireless connectivity both in indoor and outdoor environments. Multiple-input multiple-output (MIMO) communication has been an efficient technique for increasing wireless communications system capacity and performance. With the advantages of MIMO techniques, VLC can achieve an additional degree of freedom. In this paper, we systematically perform a survey of the existing work based on MIMO VLC. We categorize the types of different MIMO techniques, and a brief description is given. Different problem-solving approaches are given in the subsequent sections. In addition, machine learning approaches are also discussed in sufficient detail. Finally, we identify the future study direction for MIMO-based communication in VLC.

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Section: Mimo Communication Study Categoriesmentioning

confidence: 99%

A Comprehensive Survey on MIMO Visible Light Communication: Current Research, Machine Learning and Future Trends

Sejan

Rahman

Aziz

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…Visible light communication (VLC) is a promising alternative for complementing the overcrowded radio frequency bandwidth of wireless communication owing to its license-free operations, relative low cost, high spatial diversity, high bandwidth efficiency, and electromagnetic interference-free transmission [1][2][3][4][5][6][7]. Orthogonal frequency division multiplexing (OFDM) has been extensively used in VLC to maintain a better transmission rate due to its high spectral efficiency and low-complexity implementation to achieve better transmission rates [8,9].…”

Section: Introductionmentioning

confidence: 99%

Deep Learning-Assisted Index Estimator for Generalized LED Index Modulation OFDM in Visible Light Communication

Tran

Kim

2021

Photonics

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In this letter, we present the first attempt of active light-emitting diode (LED) indexes estimating for the generalized LED index modulation optical orthogonal frequency-division multiplexing (GLIM-OFDM) in visible light communication (VLC) system by using deep learning (DL). Instead of directly estimating the transmitted binary bit sequence with DL, the active LEDs at the transmitter are estimated to maintain acceptable complexity and improve the performance gain compared with those of previously proposed receivers. Particularly, a novel DL-based estimator termed index estimator-based deep neural network (IE-DNN) is proposed, which can employ three different DNN structures with fully connected layers (FCL) or convolution layers (CL) to recover the indexes of active LEDs in a GLIM-OFDM system. By using the received signal dataset generated in simulations, the IE-DNN is first trained offline to minimize the index error rate (IER); subsequently, the trained model is deployed for the active LED index estimation and signal demodulation of the GLIM-OFDM system. The simulation results show that the IE-DNN significantly improves the IER and bit error rate (BER) compared with those of conventional detectors with acceptable run time.

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Orientation-induced link-blocked receiver for MIMO visible light communication

Tran

Kim

2020

Opt. Express

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In this paper, we propose an orientation-induced link-blocked receiver (OLBR) to simultaneously reduce the correlation of the multiple-input multiple-output (MIMO) channels and avoid disruptive transmission in visible light communication (VLC) system. The idea of this paper is to combine the adjustable normal vector ideology of an angle diversity receiver with the channel correlation reduction of a link-blocked receiver. The proposed OLBR is designed to intentionally block specific links while enhancing other links between light-emitting diodes (LEDs) and photodiodes (PDs). Besides, the proposed receiver can perform well in many locations in the room whereas conventional receivers fail to receive signals from at least one LED due to unwanted line-of-sight (LOS) link blocking. Moreover, an algorithm is proposed to iteratively solve the optimization problem, taking the normal vectors of the PDs into consideration. The simulation results show that the proposed OLBR can achieve a performance gain in comparison with previous receiver design schemes for different scenarios, especially in the locations that are far from LEDs.

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Effective Receiver Design for MIMO Visible Light Communication with Quadrichromatic LEDs

Cited by 3 publications

References 14 publications

A Comprehensive Survey on MIMO Visible Light Communication: Current Research, Machine Learning and Future Trends

A Comprehensive Survey on MIMO Visible Light Communication: Current Research, Machine Learning and Future Trends

Deep Learning-Assisted Index Estimator for Generalized LED Index Modulation OFDM in Visible Light Communication

Orientation-induced link-blocked receiver for MIMO visible light communication

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