Abstract
We demonstrate a non-Hermitian symmetry orthogonal frequency division multiplexing (NHS OFDM), known as serial-complex-valued (SCV)-OFDM for the white-light phosphor-based light-emitting-diode (LED) visible light communication (VLC) system. The white-light LED system can provide both VLC and lighting simultaneously. The proposed scheme is based on the fast-Fourier-transform (FFT)/invert-FFT (IFFT) size efficient technique proposed before. The real (Re) and imaginary (Im) parts of the complex-valued OFDM signals are extracted and time-serially multiplexed to achieve NHS. The proposed scheme is simple and only needs a single LED transmitter (Tx) and one receiver (Rx). The encoding and decoding of the proposed SCV-OFDM are also discussed.
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