Nonbinary LDPC-Coded Modulation for Rate-Adaptive Optical Fiber Communication Without Bandwidth Expansion

被引:15
|
作者
Arabaci, Murat [1 ]
Djordjevic, Ivan B. [1 ]
Xu, Lei [2 ]
Wang, Ting [2 ]
机构
[1] Univ Arizona, Dept Elect & Comp Engn, Tucson, AZ 85721 USA
[2] NEC Labs Amer Inc, Princeton, NJ 08540 USA
关键词
Forward error correction (FEC); nonbinary low-density parity-check (LDPC) codes; optical fiber communication; rate-adaptive coded modulation; SYSTEMS; NETWORKS; CHANNEL;
D O I
10.1109/LPT.2012.2204973
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
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.
引用
收藏
页码:1402 / 1404
页数:3
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