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

Volume

24

Issue

21

fYear

2012

Firstpage

1918

Lastpage

1921

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2012.2218802

Filename

6302176