Priori Aided Compressed Sensing-Based Clipping Noise Cancellation for ACO-OFDM Systems

In this letter, the clipping noise is reconstructed from the selected reliable observations in the frequency domain based on the modified compressed sensing (CS) algorithm for the asymmetrically clipped optical orthogonal frequency division multiplexing modulated visible light communication system. With the aid of the priori information obtained from the received time-domain signals, the proposed priori aided sparsity adaptive matching pursuit method improves the accuracy and robustness of the recovery performance. Simulation results show that the proposed scheme outperforms conventional CS-based clipping noise cancellation counterparts.