TY - JOUR
T1 - BCH codes for coherent star DQAM systems with laser phase noise
AU - Leong, Miu Yoong
AU - Larsen, Knud J.
AU - Jacobsen, Gunnar
AU - Zibar, Darko
AU - Sergeyev, Sergey
AU - Popov, Sergei
PY - 2017/3/1
Y1 - 2017/3/1
N2 - Coherent optical systems have relatively high laser phase noise, which affects the performance of forward error correction (FEC) codes. In this paper, we propose a method for selecting Bose-Chaudhuri-Hocquenghem (BCH) codes for coherent systems with star-shaped constellations and M-ary differential quadrature amplitude modulation (DQAM). Our method supports constellations of any order M which is a power of 2, and includes differential M-ary phase shift keying as a special case. Our approach is straightforward, requiring only short pre-FEC simulations to parameterize a statistical model, based on which we select codes analytically. It is applicable to pre-FEC bit error rates (BERs) of around 10-3. We evaluate the accuracy of our approach using numerical simulations. For a target post-FEC BER of 10-5, codes selected with our method yield BERs within 2× target. Lastly, we extend our method to systems with interleaving, which enables us to use codes with lower overhead.
AB - Coherent optical systems have relatively high laser phase noise, which affects the performance of forward error correction (FEC) codes. In this paper, we propose a method for selecting Bose-Chaudhuri-Hocquenghem (BCH) codes for coherent systems with star-shaped constellations and M-ary differential quadrature amplitude modulation (DQAM). Our method supports constellations of any order M which is a power of 2, and includes differential M-ary phase shift keying as a special case. Our approach is straightforward, requiring only short pre-FEC simulations to parameterize a statistical model, based on which we select codes analytically. It is applicable to pre-FEC bit error rates (BERs) of around 10-3. We evaluate the accuracy of our approach using numerical simulations. For a target post-FEC BER of 10-5, codes selected with our method yield BERs within 2× target. Lastly, we extend our method to systems with interleaving, which enables us to use codes with lower overhead.
KW - block codes
KW - cycle slips
KW - error correction codes
KW - optical fiber communications
KW - phase noise
UR - https://www.degruyter.com/view/j/joc.2017.38.issue-1/joc-2016-0002/joc-2016-0002.xml
UR - http://www.scopus.com/inward/record.url?scp=85015272956&partnerID=8YFLogxK
U2 - 10.1515/joc-2016-0002
DO - 10.1515/joc-2016-0002
M3 - Article
AN - SCOPUS:85015272956
SN - 0173-4911
VL - 38
SP - 47
EP - 56
JO - Journal of Optical Communications
JF - Journal of Optical Communications
IS - 1
ER -