20 July 2017 Optical wireless communication using positive real-valued orthogonal frequency-division multiplexing and optical beamforming
Sung-Man Kim, Ki-Keun Kwon
Author Affiliations +
Abstract
The relatively unsatisfactory performance of optical wireless communication (OWC) with respect to WiFi and millimeter-wave communications has formed a key issue preventing its commercialization. We experimentally demonstrate an OWC technology using a combination of positive real-valued orthogonal frequency-division multiplexing (OFDM) and optical beamforming (OB). Due to the intensity-modulation and direct-detection aspects of OWC systems, a positive real-valued OFDM signal can be suitably utilized to maximize the OWC data rate. Further, the OB technique, which can focus laser light on a desired target, can be utilized to increase the OWC data rate and transmission distance. Our experimental results show that the received optical signal power and electrical signal increase by up to 42 and 25 dB, respectively. Further, the data rate increases by a factor of 200 with OB over the conventional approach.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2017/$25.00 © 2017 SPIE
Sung-Man Kim and Ki-Keun Kwon "Optical wireless communication using positive real-valued orthogonal frequency-division multiplexing and optical beamforming," Optical Engineering 56(7), 076105 (20 July 2017). https://doi.org/10.1117/1.OE.56.7.076105
Received: 29 March 2017; Accepted: 29 June 2017; Published: 20 July 2017
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Orthogonal frequency division multiplexing

Wireless communications

Optical communications

Back to Top