TY - GEN
T1 - On the reduced-complexity of LDPC decoders for beyond 400 Gb/s serial optical transmission
AU - Djordjevic, Ivan B.
AU - Xu, Lei
AU - Wang, Ting
PY - 2010
Y1 - 2010
N2 - Two reduced-complexity (RC) LDPC decoders are proposed, which can be used in combination with large-girth LDPC codes to enable beyond 400 Gb/s serial optical transmission. We show that optimally attenuated RC min-sum sum algorithm performs only 0.45 dB worse than conventional sum-product algorithm, while having lower storage memory requirements and much lower latency. We further evaluate the proposed algorithms for use in beyond 400 Gb/s serial optical transmission in combination with PolMUX 32-IPQ-based signal constellation and show that low BERs can be achieved for medium optical SNRs, while achieving the net coding gain above 11.4 dB.
AB - Two reduced-complexity (RC) LDPC decoders are proposed, which can be used in combination with large-girth LDPC codes to enable beyond 400 Gb/s serial optical transmission. We show that optimally attenuated RC min-sum sum algorithm performs only 0.45 dB worse than conventional sum-product algorithm, while having lower storage memory requirements and much lower latency. We further evaluate the proposed algorithms for use in beyond 400 Gb/s serial optical transmission in combination with PolMUX 32-IPQ-based signal constellation and show that low BERs can be achieved for medium optical SNRs, while achieving the net coding gain above 11.4 dB.
KW - Coherent detection
KW - Forward error correction (FEC)
KW - Low-density parity-check (LDPC) codes
KW - Optical communications
KW - Reduced complexity (RC) LDPC decoders
UR - http://www.scopus.com/inward/record.url?scp=85030028706&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85030028706&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85030028706
SN - 9780819485540
T3 - Optics InfoBase Conference Papers
BT - Asia Communications and Photonics Conference and Exhibition, ACP 2010
PB - Optical Society of America (OSA)
T2 - Asia Communications and Photonics Conference and Exhibition, ACP 2010
Y2 - 8 December 2010 through 12 December 2010
ER -