Title :
Adaptive Frequency-Domain Equalization for Mode-Division Multiplexed Transmission
Author :
Bai, Neng ; Li, Guifang
Author_Institution :
Center for Res. & Educ. in Opt. & Lasers (CREOL), Univ. of Central Florida, Orlando, FL, USA
Abstract :
We propose single-carrier adaptive frequency-domain equalization (SC-FDE) for mode-division multiplexed transmission. A two-mode fiber long haul transmission system is simulated. The performances of both FDE and time-domain equalization (TDE) are verified and compared. The FDE approach reduces the computational complexity significantly compared to the TDE while maintaining the same performance. For a two-mode transmission of 2000 km, FDE decreases the complexity by a factor of as much as 77 compared with TDE at the expense of a large memory length of 2048 that may require higher hardware complexity. The dynamic response of the adaptive equalizer is simulated by using a mode scrambler. FDE achieves the same tracking speed as TDE.
Keywords :
OFDM modulation; adaptive equalisers; optical fibre communication; time-domain analysis; time-frequency analysis; FDE; computational complexity; hardware complexity; haul transmission system; memory length; mode-division multiplexed transmission; single-carrier adaptive frequency-domain equalization; time-domain equalization; tracking speed; two-mode fiber; Adaptive equalizers; Complexity theory; Frequency domain analysis; Multiplexing; Optical fiber communication; Optical fibers; Training; Adaptive equalizers; multiple-input-multiple-output (MIMO); multiplexing; optical fiber communication;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2218802
