Subcarrier Pairwise Coding for Short-Haul L/E-ACO-OFDM

Dispersion-induced power fading in intensity modulated direct-detection systems degrades the higher frequency subcarriers' signal qualities. In layered/enhanced asymmetrically clipped optical OFDM (ACO-OFDM), which is a spectrally efficient version of ACO-OFDM, the error propagation in the iterative decoding can further degrade the performance, especially when a low bias current is used for the di...