Improved Receivers for Asymmetrically-Clipped Optical OFDM

In this paper, we propose two novel receiver designs for asymmetrically clipped optical orthogonal frequency division multiplexing (ACO- OFDM). The first one, termed ´Proposed Receiver I´, exploits the structure of the clipping noise which improves the power efficiency over the state-of- the-art ACO-OFDM receiver. The second one, termed ´Proposed Receiver II´, exploits the benefit of bit error correction which achieves a further improvement over the state-of-the-art ACO-OFDM receiver at the expense of computational complexity.