Interleavers and BCH Codes for Coherent DQPSK Systems With Laser Phase Noise
2015 (English)In: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 27, no 7, 685-688 p.Article in journal (Refereed) Published
The relatively high phase noise of coherent optical systems poses unique challenges for forward error correction (FEC). In this letter, we propose a novel semianalytical method for selecting combinations of interleaver lengths and binary Bose-Chaudhuri-Hocquenghem (BCH) codes that meet a target post-FEC bit error rate (BER). Our method requires only short pre-FEC simulations, based on which we design interleavers and codes analytically. It is applicable to pre-FEC BER similar to 10(-3), and any post-FEC BER. In addition, we show that there is a tradeoff between code overhead and interleaver delay. Finally, for a target of 10(-5), numerical simulations show that interleaver-code combinations selected using our method have post-FEC BER around 2x target. The target BER is achieved with 0.1 dB extra signal-to-noise ratio.
Place, publisher, year, edition, pages
2015. Vol. 27, no 7, 685-688 p.
Optical fiber communications, error correction codes, block codes, phase noise, communication systems
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-163953DOI: 10.1109/LPT.2014.2385731ISI: 000350877700001ScopusID: 2-s2.0-84924410228OAI: oai:DiVA.org:kth-163953DiVA: diva2:810203
FunderSwedish Research Council, 0379801EU, FP7, Seventh Framework Programme, 324391
QC 201505062015-05-062015-04-132015-11-19Bibliographically approved