Lighting and Communications: Devices and Systems

Alves, Luís Nero; Rodrigues, Luís; Cura, J.L.

doi:10.1201/9781315367330-2

Cited by 4 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Owing to its utilization of white LEDs (Light Emitting Diodes), VLC has been considered a suitable candidate for future generation communication networks, offering energy efficient service, unregulated frequency spectrum, and a potentially low-cost solution [1,2] . However, standard LEDs, in particular white phosphor-based LEDs, have a low modulation bandwidth, typically in the range of a few MHz, which is considered as a limiting factor for the communication networks' modulation bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Position encoded asymmetrically clipped optical orthogonal frequency division multiplexing in visible light communications

Saied

Ghassemlooy

Tang

et al. 2017

J. Commun. Inf. Netw.

View full text Add to dashboard Cite

A PE-ACO-OFDM (Position-Encoded Asymmetrically Clipped Optical Orthogonal Frequency Division Multiplexing) signaling scheme for intensity modulation and direct detection is introduced in this paper, where the anti-asymmetry characteristics of ACO-OFDM are exploited to improve the rate of data transmission. This is achieved by reducing the symbol duration of the ACO-OFDM signal, where only the first half of ACO-OFDM is used to transmit the ACO-OFDM data symbol after inverting its negative samples to positive ones. In addition, encoded ACO-OFDM samples are combined with every ACO-OFDM symbol to allow the receiver to identify the position of the inverted samples. Simulation results are introduced, and it is shown that the data rates of PE-ACO-OFDM improve by 33% compared with ACO-OFDM, when a 256-quadrature amplitude modulation scheme is considered as the encoded constellation order. It is also shown that the signal to noise ratio of the proposed PE-ACO-OFDM is higher by almost 1 dB compared with the traditional ACO-OFDM.

show abstract

Section: Introductionmentioning

confidence: 99%

Position encoded asymmetrically clipped optical orthogonal frequency division multiplexing in visible light communications

Saied

Ghassemlooy

Tang

et al. 2017

J. Commun. Inf. Netw.

View full text Add to dashboard Cite

show abstract

“…ITS has also been considering the use of visible light communications (VLC) [6] by way of exploiting the potential of light-emitting diode (LED) based lighting fixtures in both vehicles and roadsides (i.e., street lamps, traffic lights, car lights). This approach will lead in the long run to reduced cost, greener environment and the release of highly need RF frequency spectrum for other applications.…”

Section: Introductionmentioning

confidence: 99%