"Improvement of transmission capacity of visible light access link using Bayesian compressive sensing"
| Title | "Improvement of transmission capacity of visible light access link using Bayesian compressive sensing" |
| Publication Type | Conference Paper |
| Year of Publication | 2015 |
| Authors | Y. Y. Won, D. S. Seo, S. M. Yoon |
| Conference Name | 2015 21st Asia-Pacific Conference on Communications (APCC) |
| Date Published | Oct. 2015 |
| Publisher | IEEE |
| ISBN Number | 978-4-8855-2301-4 |
| Accession Number | 15804198 |
| Keywords | 16-QAM symbol, adaptive sampling, Bayes methods, Bayesian compressive sensing, Bayesian CS, Bit error rate, compressed sensing, discrete cosine transforms, error statistics, error-free reconstruction, forward error correction, free-space optical communication, inverse discrete cosine transform, inverse transforms, L1-minimization, light emitting diode, light emitting diodes, minimisation, multilevel digital modulation, OFDM, OFDM modulation, OFDM signal encoding, Optical filters, optical links, optical modulation, optical wireless OFDM link transmission capacity, optical wireless orthogonal frequency division multiplexing link, Phase shift keying, pubcrawl170104, QPSK symbol, quadrature amplitude modulation, visible LED, visible light access link transmission capacity improvement, visible light emitting diode, Wireless communication, Wireless sensor networks |
| Abstract | A technical method regarding to the improvement of transmission capacity of an optical wireless orthogonal frequency division multiplexing (OFDM) link based on a visible light emitting diode (LED) is proposed in this paper. An original OFDM signal, which is encoded by various multilevel digital modulations such as quadrature phase shift keying (QPSK), and quadrature amplitude modulation (QAM), is converted into a sparse one and then compressed using an adaptive sampling with inverse discrete cosine transform, while its error-free reconstruction is implemented using a L1-minimization based on a Bayesian compressive sensing (CS). In case of QPSK symbols, the transmission capacity of the optical wireless OFDM link was increased from 31.12 Mb/s to 51.87 Mb/s at the compression ratio of 40 %, while It was improved from 62.5 Mb/s to 78.13 Mb/s at the compression ratio of 20 % under the 16-QAM symbols in the error free wireless transmission (forward error correction limit: bit error rate of 10-3). |
| URL | https://ieeexplore.ieee.org/document/7412554 |
| DOI | 10.1109/APCC.2015.7412554 |
| Citation Key | 7412554 |
- Phase shift keying
- OFDM
- OFDM modulation
- OFDM signal encoding
- Optical filters
- optical links
- optical modulation
- optical wireless OFDM link transmission capacity
- optical wireless orthogonal frequency division multiplexing link
- multilevel digital modulation
- pubcrawl170104
- QPSK symbol
- quadrature amplitude modulation
- visible LED
- visible light access link transmission capacity improvement
- visible light emitting diode
- Wireless communication
- wireless sensor networks
- error-free reconstruction
- Adaptive Sampling
- Bayes methods
- Bayesian compressive sensing
- Bayesian CS
- Bit error rate
- compressed sensing
- discrete cosine transforms
- error statistics
- 16-QAM symbol
- forward error correction
- free-space optical communication
- inverse discrete cosine transform
- inverse transforms
- L1-minimization
- light emitting diode
- light emitting diodes
- minimisation