Abstract
We propose a modified orthogonal frequency division multiplexing/offset quadrature amplitude modulation (OFDM/OQAM) scheme for visible light communications (VLC). The OFDM/OQAM VLC system can efficiently boost the data rate, and combat multipath induced the inter symbol interference (ISI) and inter carrier interference (ICI). To combat the effect of intrinsic imaginary interference, intrasymbol frequency-domain averaging and minimum mean squared error (MMSE), combined with interference approximation method, are proposed. The experiment results show that the proposed system offers similar bit error rate performance to that of OFDM, while the bit rate is increased by 9% for the elimination of cyclic-prefix and guard band.
| Original language | English |
|---|---|
| Pages (from-to) | 1-10 |
| Number of pages | 10 |
| Journal | IEEE Photonics Journal |
| Volume | 8 |
| Issue number | 5 |
| DOIs | |
| State | Published - Oct 2016 |
| Externally published | Yes |
Keywords
- Offset quadrature amplitude modulation (OQAM)
- orthogonal frequency division multiplexing access (OFDM)
- visible light communications (VLC)
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