1 April 2016 White light-emitting diode based wireless orthogonal frequency division multiplexing link with improved transmission capacity using Bayesian compressive sensing
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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.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Yong-Yuk Won, Yong-Yuk Won, Dong-Sun Seo, Dong-Sun Seo, Sang Min Yoon, Sang Min Yoon, } "White light-emitting diode based wireless orthogonal frequency division multiplexing link with improved transmission capacity using Bayesian compressive sensing," Optical Engineering 55(4), 046101 (1 April 2016). https://doi.org/10.1117/1.OE.55.4.046101 . Submission:
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