Visible Light Communication the next Future Generation System

Qasim, Abdullah Ali; Abdullah, Mohammad; Talib, R.; gheni, Hassan Muwafaq; Omar, Khaldoon Anmar; Abdulrahman, Anas Malik

doi:10.1109/cisct.2019.8777446

Cited by 9 publications

(9 citation statements)

References 18 publications

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“…VLC has attracted high interest from researchers because of its unlicensed bandwidth, the fact that these systems use visible light that has no electronic interference or health risk. Intensity modulation at the transmitter and direct detection at receiver (IM/DD) is customarily applied in VLC systems, because of its simplicity [1]. Therefore using the technique mentioned above, this confirms that the signal transmitted through the light source (light emitting diode (LED) or laser diode (LD)) is in the form of optical power [2], indicating that it is a positive light signal [3].…”

Section: Introductionmentioning

confidence: 91%

Low complexity DCO-FBMC visible light communication system

Qasim¹,

Abdullah²,

Talib³

et al. 2020

IJECE

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Filter Bank Multicarrier (FBMC) is a new waveform candidate in the visible light communication system (VLC). FBMC is a distinctive kind of multi-carrier modulation that can be regarded as an alternative to orthogonal frequency Division Multicarrier (OFDM) with CP (cyclic prefix). DCO-FBMC (DC-bias optical FBMC) has recently been used in VLC, because it overcomes all defects in the optical-OFDM system and has high spectral efficiency. But at the same time the traditional DCO-FBMC suffers from high complexity due to the use of Hermitian Symmetry for real signal, by using 2Npoint subcarrier IFFT (Inverse Fast Fourier Transformer) in the modulator, and the output is N-point subcarrier FFT (Fast Fourier Transform) in the demodulator. In this paper, for the first time, the possibility of minimizing complexity and generating a real signal without the use of Hermitian Symmetry or any other technique has been verified. The proposed technology provides 50% of the size of the IFFT / FFT and this results in a significant reduction in power consumption and occupied chip area.

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Section: Introductionmentioning

confidence: 91%

Low complexity DCO-FBMC visible light communication system

Qasim¹,

Abdullah²,

Talib³

et al. 2020

IJECE

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“…Here, the choice of modulation and effective demodulation must be vital in improving the effectiveness and reliability of the signal. The real challenge appears as wireless communication has become a very important technology, and one of the most important communication methods is very important is the visible light communication (VLC) [2]- [4] The VLC system uses solid-state optical semiconductors such as light-emitting diodes (LED) [5] and lasers diode (LD) [6], [7] that are used to achieve lighting and data transmission. VLC has shown that it is a major part of existing 5G networks.…”

Section: Introductionmentioning

confidence: 99%

“…The signal must be unipolar, so the OFDM scheme uses DC-bias to make the signal positive. There are other types of ways to make the signal unipolar, but each scheme has positives and negatives, but there are major weaknesses that OFDM modulation suffers from as it suffers from narrow bandwidth due to cyclic prefix (CP) OFDM addition of leakage spectrum because of great side lobes [2], [6], [15], [17]- [19]. Recently, filter bank multi-carrier (FBMC) systems have gained a lot of popularity due to their high bandwidth, power efficiency, flexibility, and spectrum use.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Flip-FBMC visible light communication model

Qasim

Mohammedali

Abdullah

et al. 2021

IJEECS

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<p>VLC technology is one of the most promising technologies in the generations of communications, especially 5G after the significant development of optical semiconductors, specific laser diode, and the use of FBMC modulation in the system. DCO-FBMC modulation surpasses all the disadvantages of DCO-OFDM modulation techniques, as it is characterized by high speed and large bandwidth, but this technique consumes high energy when converting a real bipolar signal into a positive unipolar by adding DC-bias. Besides the challenge of illumination distribution indoor typical room, where the drop of the illumination appears in the middle of the room, besides the power consumption. The Flip-FBMC technique was proposed to solve this challenge, which helps convert the bipolar signal into unipolar by separating the positive part from the negative part and converting it into positive and merging it using Multiplexer and then sending the signal. Besides this, the authors presented in this paper a new lighting model with 5 luminescent units, using LD instead of LED. The Flip-FBMC profile gave better energy savings and BER performance than DCO-FBMC, besides a lighting model that covers dark areas and gives high SNR for the blind area and give save power 13.14% from consumed power.</p>

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“…5, October 2021: 1439 -1449 1440 main factor in the evolution of optical communications as it provides several benefits including increased efficiency and long lifetime with a large bandwidth and less power consumption [3]- [5]. All these characteristics add sufficient visibility to the exploitation of its major function besides illumination in communications [6]. VLC has become one of the to the highest degree promising candidates for wireless communications for indoor environments in the upcoming 5G fifth-generation communications [7].…”

Section: Introductionmentioning

confidence: 99%

“…The primary weakness of OFDM modulation is its high spectral leakage because of rectangular windows. There is also weak spectral efficiency due to the cyclic prefix (CP) besides interference between asynchronous signals [6], [21].…”

Section: Introductionmentioning

confidence: 99%

Visible light communication using new Flip-FBMC modulation system technique

et al. 2021

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Filter bank multi-carrier (FBMC) modulation in the visible light communication (VLC) system is one of the most promising modulation systems in optical wireless communications (OWC), especially in 5G and 6G future applications. FBMC has a wide bandwidth compared to other modulation systems. One of the highest degree essential conditions for utilising the signal in VLC is that the signal is real positive, the signal is agreeable with intensity modulation/direct detection (IM/DD), where Hermitian symmetry (H.S) is utilised to get a real signal (RE) and to be unipolar direct current (DC)-bias is used. Here the challenge arises as this method increases complicating, due to the modulation of the N number of frequency symbols, these symbols need 2N inverse fast fourier transform (IFFT) and fast fourier transform (FFT), in addition to energy consumption. This research focused on the time domain and not the frequency domain by using the traditional complex FBMC generation signal, and to obtain the RE signal by placing the RE signal side by side with the imaginary signal (IMs) in a row, and then using new Flip-FBMC technology, which saves more energy. The proposed technologies provide approximately 57% of the number of IFFT/FFT. The use of Flip-FBMC technology consumes less energy than traditional technologies with better bit error rate (BER) performance.

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Visible Light Communication the next Future Generation System

Cited by 9 publications

References 18 publications

Low complexity DCO-FBMC visible light communication system

Low complexity DCO-FBMC visible light communication system

Enhanced Flip-FBMC visible light communication model

Visible light communication using new Flip-FBMC modulation system technique

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