Abstract
In this letter, an adaptive symbol decomposition with serial transmission (ASDST) scheme is proposed to reduce the effect of non-linear clipping noise for optical orthogonal frequency division multiplexing (O-OFDM) system in visible light communication. The transmitted O-OFDM symbol is adaptively decomposed by amplitude clipping and the decomposed symbols are fed into single light emitting diode (LED) by using serial framing. Adaptive symbol decomposition is the process of repeating the amplitude clipping according to each decomposition symbol amplitude and clipping levels. The simulation results show that the ASDST scheme offers improved transmission performance compared with conventional iterative signal clipping (ISC) scheme, since it eliminates all-zero symbols and transmits the same information with fewer decomposition symbols.
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