Abstract
Two signal multiplexing schemes for optical fiber communication are considered: Wavelength-division multiplexing (WDM) and nonlinear frequency-division multiplexing (NFDM), based on the nonlinear Fourier transform. Achievable information rates (AIRs) of NFDM and WDM are compared in a network scenario with an ideal lossless model of the optical fiber in the defocusing regime. It is shown that the NFDM AIR is greater than the WDM AIR subject to a bandwidth and average power constraint, in a representative system with one symbol per user. The improvement results from nonlinear signal multiplexing.
| Original language | English |
|---|---|
| Article number | 8839847 |
| Pages (from-to) | 478-495 |
| Number of pages | 18 |
| Journal | IEEE Transactions on Information Theory |
| Volume | 66 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Jan 2020 |
Keywords
- Optical fiber
- nonlinear Fourier transform
- nonlinear frequency-division multiplexing
- wavelength-division multiplexing