Title :
An on–off-Keying Optical Receiver With Dual Thresholds and Erasure Zone
Author :
Chen, Jian ; Xie, Bing ; Guan, Yong Liang ; Wang, Yixin
Author_Institution :
Infocomm Res., Singapore
Abstract :
An ON-OFF-keying optical receiver with dual thresholds and an erasure zone is proposed. This configuration can be applied to track the optimized decision level adaptively and obtain additional coding gain from forward-error correction without increasing the code rate. Our analysis shows that in both unamplified and optically preamplified receivers, the required Q value for the bit-error rate of 10-12 can be reduced by 1.8 dB, if errors arise in burst nature and the optimized erasure zone width is around 7%-11% of the signal swing.
Keywords :
amplitude shift keying; error statistics; forward error correction; optical receivers; Q value; bit-error rate; coding gain; erasure zone; forward-error correction; on-off-keying; optical receiver; Bit error rate; Code standards; Forward error correction; Helium; Maximum likelihood decoding; Optical filters; Optical receivers; Optical sensors; Optimization methods; Signal analysis; Burst correction codes; forward-error correction (FEC); optical receivers; threshold decoding;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.904560
