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Optimum Device and Modulation Scheme Selection for Optical Wireless Communications

There has been an extensive modelling of the optical wireless channel, and the optimum modulation scheme for a particular channel is well-understood. However, this modelling has not taken into account the trade-offs that transmitter and receiver selection usually involve. For a particular type of transmitter, the modulation bandwidth and available power are closely related, as are receiver bandwidth, active area and sensitivity. In this article, we present a design approach that takes this device selection into account. The article details a general design method for an optical wireless communication system using a holistic design approach (i.e., considering channel, modulation schemes, and device constraints). The article shows results for particular examples, showing a substantial increase in margin (or data-rate) is available using this approach. For instance, by using this approach mutually optimising both modulation schemes and device constraints, it is found that for an optimally chosen Gallium Nitride micro-LED and a commercial photo receiver pair, a 20 dB SNR margin (or ~3 times data-rate improvement) can be obtained compared with a more typical approach mainly concerning the modulation scheme optimisation.

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.39 No.8 April 15 2021

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 2281 - 2287

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

OPTICAL COMMUNICATIONS
VISIBLE LIGHT COMMUNICATION
OFDM
OPTICAL WIRELESS COMMUNICATION
MICRO-LED
VLC
LIFI
EQUALISATION
OWC
RC LED
TECHNOLOGY-CURVE
WLED

Info Detail Spesifik

DOI: 10.1109/JLT.2021.3051379

Pernyataan Tanggungjawab

Hyunchae Chun, Sujan Rajbhandari, Grahame Faulkner, Enyuan Xie, Jonathan J. D. McKendry, Erdan Gu, Martin D. Dawson, Dominic O’Brien

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