TY - JOUR
T1 - Nonbinary LDPC-coded modulation for rate-adaptive optical fiber communication Without bandwidth expansion
AU - Arabaci, Murat
AU - Djordjevic, Ivan B.
AU - Xu, Lei
AU - Wang, Ting
N1 - Funding Information:
Manuscript received April 22, 2012; revised June 1, 2012; accepted June 6, 2012. Date of publication June 15, 2012; date of current version July 20, 2012. This work was supported in part by NSF under Grant CCF-0952711 and in part by the NEC Laboratories America, Inc. M. Arabaci and I. B. Djordjevic are with the Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ 85721 USA (e-mail: [email protected]; [email protected]). L. Xu and T. Wang are with NEC Laboratories America, Inc., Princeton, NJ 08540 USA (e-mail: [email protected]; [email protected]). Color versions of one or more of the figures in this letter are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/LPT.2012.2204973
PY - 2012
Y1 - 2012
N2 - A rate-adaptive nonbinary low-density parity-check-coded modulation scheme is proposed to enable fiber-optic transmission at variable bit rates by adjusting the spectral efficiency (SE) of transmission while keeping the occupied bandwidth fixed. To achieve a given SE within a fixed bandwidth, both the underlying signal constellation size and the forward error correction code rate are adjusted. Using the scarce resource of bandwidth more effectively, the proposed scheme is expected to find applications in both current fixed-grid networks and in future networks that might adopt flexible grid approach.
AB - A rate-adaptive nonbinary low-density parity-check-coded modulation scheme is proposed to enable fiber-optic transmission at variable bit rates by adjusting the spectral efficiency (SE) of transmission while keeping the occupied bandwidth fixed. To achieve a given SE within a fixed bandwidth, both the underlying signal constellation size and the forward error correction code rate are adjusted. Using the scarce resource of bandwidth more effectively, the proposed scheme is expected to find applications in both current fixed-grid networks and in future networks that might adopt flexible grid approach.
KW - Forward error correction (FEC)
KW - nonbinary low-density parity-check (LDPC) codes
KW - optical fiber communication
KW - rate-adaptive coded modulation
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U2 - 10.1109/LPT.2012.2204973
DO - 10.1109/LPT.2012.2204973
M3 - Article
AN - SCOPUS:84864778455
SN - 1041-1135
VL - 24
SP - 1402
EP - 1404
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
IS - 16
M1 - 6218753
ER -