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White light-emitting diode based wireless orthogonal frequency division multiplexing link with improved transmission capacity using Bayesian compressive sensing
Author(s): Yong-Yuk Won; Dong-Sun Seo; Sang Min Yoon
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Paper Abstract

We propose a technique that improves the channel capacity of an optical wireless orthogonal frequency division multiplexing (OFDM) transmission, which employs a visible light-emitting diode. An OFDM waveform encoded by quadrature phase shift keying (QPSK) or 16-quadrature amplitude modulation is compressed and then transformed into a sparse waveform using a proposed advanced systematic sampling. At the optical wireless receiver, the original waveform is recovered by L1-minimization based on a Bayesian compressive sensing. Our experimental results show the significant increase in the channel capacity from 31.12 to 51.87  Mbit/s at forward error correction limit (i.e., error vector magnitude of 32%) in case of QPSK symbols.

Paper Details

Date Published: 1 April 2016
PDF: 6 pages
Opt. Eng. 55(4) 046101 doi: 10.1117/1.OE.55.4.046101
Published in: Optical Engineering Volume 55, Issue 4
Show Author Affiliations
Yong-Yuk Won, Myongji Univ. (Korea, Republic of)
Dong-Sun Seo, Myongji Univ. (Korea, Republic of)
Sang Min Yoon, Kookmin Univ. (Korea, Republic of)

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