Analysis and implementation of FEC in 10G-EPON

Abstract

Forward error correction (FEC) may reduce the bit-error ratio (BER) and provide coding gain, so FEC is considered as a mandatory part in 10 Gbit/s Ethernet passive optical networks (10G-EPONs). First, the basic concepts of FEC and Reed-Solomon (RS) code are introduced in this paper. After a detailed description of the implementation of FEC in 10G-EPON, computed result shows that FEC based on R_RS(255,223) can meet the need of 10G-EPON’s high power budget. Therefore, FEC is the performance choice with high added value in 10G-EPON.

Keywords

forward error correction (FEC) / 10 Gbit/s Ethernet passive optical network (10G-EPON) / Reed-Solomon (RS) code / bit-error ratio (BER) / coding gain / optical line terminal (OLT) / optical network unit (ONU)

References

[1] Lee H. A high-speed low-complexity Reed-Solomon decoder for optical communications. IEEE Transactions on Circuits and Systems, 2005, 52(8): 461-465

[2] Kramer G. Ethernet Passive Optical Networks (in Chinese, trans. Chen Xue). Beijing: Beijing University of Posts and Telecommunications Press, 2007, 121-123. (Original work published 2005)

[3] Schmitt A. Improving optical networks with forward error correction. Electronic Engineering (London), 2000, 72(878): 87-88

[4] IEEE 802.3ah Ethernet in the First Mile Task Force. IEEE standard 802.3ah TM. 2004

Acknowledgements

This paper was supported by the High Technology Research and Development Program of China (No. 2007AA01Z229).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg