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.
Original language | English (US) |
---|---|
Article number | 6218753 |
Pages (from-to) | 1402-1404 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 24 |
Issue number | 16 |
DOIs | |
State | Published - 2012 |
Keywords
- Forward error correction (FEC)
- nonbinary low-density parity-check (LDPC) codes
- optical fiber communication
- rate-adaptive coded modulation
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering