Experimental Research on Adaptive 128/64QAM DFT-Spread IFFT/FFT Size Efficient OFDM With a High SE in VLLC System
In this paper, an adaptive inverse fast Fourier transform and fast Fourier transform (IFFT/FFT) size efficient orthogonal frequency division multiplexing (OFDM) modulation scheme with 128/64-quadrature amplitude modulation (QAM) and discrete Fourier transmission-spread (DFT-spr...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2017-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/7782852/ |
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| Summary: | In this paper, an adaptive inverse fast Fourier transform and fast Fourier transform (IFFT/FFT) size efficient orthogonal frequency division multiplexing (OFDM) modulation scheme with 128/64-quadrature amplitude modulation (QAM) and discrete Fourier transmission-spread (DFT-spread) is proposed and experimentally demonstrated in a visible laser light communication (VLLC) system with a cost-effective 450-nm blue-light laser diode. The experimental results show that the 5.95 Gb/s adaptive IFFT/FFT size-efficient OFDM with the spectral efficiency of 4.76 b/s/Hz transmission over 5-m free-space can be successfully achieved. |
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| ISSN: | 1943-0655 |