In order to reduce the interference and multipath effect of obstacle reflection on visible light communication in the transmission channel. Firstly, asymmetrically clipped optical orthogonal frequency division multiplexing(ACO-OFDM) simulation model and channel model are built in this paper. the simulation results show that the ACO-OFDM modulation based on quadrature amplitude modulation(16QAM) has better anti-noise performance in both direct link and reflection link. the coding method of concatenated BCH and convolutional code is added to ACO-OFDM. The simulation results show that the ACO-OFDM system using cascade BCH and convolutional code has higher anti-noise performance and better anti-jamming performance, and improves the performance of visible light communication.