LACO-OFDM With Index Modulation for Optical Wireless Systems

In this letter, we propose layered asymmetrically clipped optical-orthogonal frequency-division multiplexing (LACO-OFDM) with index modulation (IM), i.e., LACO-OFDM-IM for optical wireless systems. classical LACO-OFDM, the spectral leakage because of out-of-band clipping harmonics increases baseband bandwidth (BB) resulting in lower efficiencies. For LACO-OFDM-IM, use IM and optimize BB by filtering harmonics. This amalgamation optimization leads to better efficiency (SE). Simulation results shall affirm that achieves higher SE, affords a comprehensive granularity SE/energy trade-off, outperforms alternatives terms bit-error-rate both line-of-sight time-dispersive channels.