DocumentCode :
1542020
Title :
Nonbinary LDPC-Coded Modulation for Rate-Adaptive Optical Fiber Communication Without Bandwidth Expansion
Author :
Arabaci, Murat ; Djordjevic, Ivan B. ; Xu, Lei ; Wang, Ting
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Arizona, Tucson, AZ, USA
Volume :
24
Issue :
16
fYear :
2012
Firstpage :
1402
Lastpage :
1404
Abstract :
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.
Keywords :
forward error correction; optical fibre communication; parity check codes; current fixed-grid networks; fiber-optic transmission; forward error correction code; low density parity check codes; nonbinary LDPC-coded modulation; rate-adaptive nonbinary low-density parity-check-coded modulation scheme; rate-adaptive optical fiber communication; spectral efficiency; Bandwidth; Bit rate; Modulation; Optical fiber communication; Optical fibers; Parity check codes; Signal to noise ratio; Forward error correction (FEC); nonbinary low-density parity-check (LDPC) codes; optical fiber communication; rate-adaptive coded modulation;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2012.2204973
Filename :
6218753
Link To Document :
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