Visible-light communications and light fidelity

Haas, Harald; Sarbazi, Elham; Marshoud, Hanaa; Fakidis, John

doi:10.1016/b978-0-12-816502-7.00013-0

Cited by 24 publications

(19 citation statements)

References 114 publications

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“…where Φ 1/2 is the half-intensity angle [21]. The radiance angle φ and the incidence angle ψ of the AP and the receiver can be calculated using the rules from analytical geometry as:…”

Section: And the Receiving Pd Is Given Bymentioning

confidence: 99%

Amplitude, phase, and quadrant (APQ) modulation for indoor visible light communications

Abumarshoud

Mohjazi

Muhaidat

2021

Physical Communication

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“…where Φ 1/2 is the half-intensity angle [21]. The radiance angle φ and the incidence angle ψ of the AP and the receiver can be calculated using the rules from analytical geometry as:…”

Section: And the Receiving Pd Is Given Bymentioning

confidence: 99%

Amplitude, phase, and quadrant (APQ) modulation for indoor visible light communications

Abumarshoud

Mohjazi

Muhaidat

2021

Physical Communication

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“…The advancements in solid-state lighting technologies paved the way for light communication (LC) to be a promising broadband wireless telecommunication solution to fulfil the ever-growing demand of wireless traffic [1]. The radio frequency (RF) non-interfering nature of the light spectrum brings significant advantages, such as a spatial dense and simultaneous spectral reuse to cope with the surge in wirelss data capacity.…”

Section: Introductionmentioning

confidence: 99%

A novel mobile multi-user LiFi system

Nguyen

Yeşilkaya

Chen

et al. 2022

ICC 2022 - IEEE International Conference on Communications

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In this paper, a vehicular light-fidelity (LiFi) system, which supports mobility for seamless broadband data transmission is proposed for multipoint-to-point (M2P) communication.To this end, a novel digital mirror device (DMD) based receiver (RX) is investigated that consists of two functionalities, to sense the transmitters and sense mobility. Relying on the proposed hybrid waveform, the proposed RX has the ability to detect and distinguish multiple transmitter (TX) sources under free movement conditions within three-dimensional space. Computer simulation results for the 'TX sensing platform' show that a high TX detection and identification performance is achieved at an extremely low channel signal-to-noise-ratio (SNR) of −11 dB and a bit error ratio (BER) of 10 −4 . Furthermore. the simulation results for the 'mobility sensing platform' was able to trace the positions of light sources simultaneously with the error rate of below 2% relative to the diameter of light spots on the DMD for all considered mobility scenarios.

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“…At the expense of receiver complexity and cost, this technique can eradicate CCI from the neighboring AP and reduce ISI caused by multipath reflection. Also, efforts are given to reduce ISI in the downlink VLC channel by employing the orthogonal frequency division multiplexing (OFDM) technique 36 . High spectral efficiency is obtained in another research 37 by combining asymmetrically clipped optical OFDM and on‐off keying modulation schemes.…”

Section: Introductionmentioning

confidence: 99%

Signal to interference plus noise ratio improvement of a multi‐cell indoor visible light communication system through optimal parameter selection complying lighting constraints

Chatterjee

Sabui

Khan

et al. 2021

Trans Emerging Tel Tech

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To achieve improved communication and illumination performances of a multi‐cell indoor visible light communication system, the selection of transmitter configuration and receiver's field of view (FoV) play a critical role. Based on multiple criteria decision modeling, a design‐centric methodology is proposed in this paper to determine the optimal transmitter configuration and receiver's FoV under lighting constraints. These optimal parameter selections are instrumental to obtain a highly uncorrelated channel, thus significantly mitigate both co‐channel interference from the neighboring transmitter and intersymbol interference due to multipath reflection. The implication for the optimum selection is explored using two communication false(Ptrue‾sig,Ptrue‾intffalse) and two lighting (Eavg, UO) performance indicating metrics. For a typical indoor scenario, three different transmitter arrangements with varying half‐power beam‐width are considered as alternatives. Furthermore, the signal to interference plus noise ratio (SINR) is tested over the communication floor (CF) by a simple receiver structure with a single photodiode. Incorporating the optimal transmitter configuration and receiver's FoV, 36.13 dB average SINR and 345 lx average horizontal illuminance is achieved. Analytically obtained SINR is also validated using a commercial ray tracing optical software for different positions over the CF. In comparison with the state of the art non‐optimal and sub‐optimal solutions, the proposed scheme, without real‐time computational complexity exhibits noteworthy improvement in SINR performance at expense of a trivial drop in overall uniformity of horizontal illuminance.

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Visible-light communications and light fidelity

Cited by 24 publications

References 114 publications

Amplitude, phase, and quadrant (APQ) modulation for indoor visible light communications

Amplitude, phase, and quadrant (APQ) modulation for indoor visible light communications

A novel mobile multi-user LiFi system

Signal to interference plus noise ratio improvement of a multi‐cell indoor visible light communication system through optimal parameter selection complying lighting constraints

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