Direct Current Bias Optimization of the LDPC Coded DCO-OFDM Systems

• Published in: IEEE photonics technology letters Vol. 27; no. 19; pp. 2095 - 2098
• Main Authors: Jiang, Ming, Zhang, Jun, Liang, Xiao, Zhao, Chunming
• Format: Journal Article
• Language: English
• Published: IEEE 01.10.2015
• Subjects: Adaptive optics; convergence threshold; DC bias; DCO-OFDM; EXIT; High-speed optical techniques; LDPC; Noise; OFDM; Optical distortion; Optical noise; Parity check codes; LDPC; DCO-OFDM; EXIT; DC bias; convergence threshold

In this letter, a direct current (DC) bias optimization scheme is proposed for the low-density parity-check (LDPC) coded DC-biased optical orthogonal frequency division multiplexing (DCO-OFDM) systems from consideration of power efficiency and dimming control. The DC bias can be optimized subject to...