Lasers, Fiber Optics, and Communications

White light-emitting diode based wireless orthogonal frequency division multiplexing link with improved transmission capacity using Bayesian compressive sensing

[+] Author Affiliations
Yong-Yuk Won, Dong-Sun Seo

Myongji University, Department of Electronic Engineering, 116 Myongji-ro, Cheoin-gu, Yongin 17058, Republic of Korea

Sang Min Yoon

Kookmin University, School of Computer Science, 77 Jeongneung-ro, Seongbuk-gu, Seoul 02707, Republic of Korea

Opt. Eng. 55(4), 046101 (Apr 01, 2016). doi:10.1117/1.OE.55.4.046101
History: Received October 8, 2015; Accepted March 14, 2016
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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.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Yong-Yuk Won ; Dong-Sun Seo and Sang Min Yoon
"White light-emitting diode based wireless orthogonal frequency division multiplexing link with improved transmission capacity using Bayesian compressive sensing", Opt. Eng. 55(4), 046101 (Apr 01, 2016). ; http://dx.doi.org/10.1117/1.OE.55.4.046101


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