Open AccessPolarization-interleave-multiplexed discrete multi-tone modulation with direct detection utilizing MIMO equalization
Author(s) -
Xian Zhou,
Kangping Zhong,
Yuliang Gao,
Qi Shu,
Zhenghua Dong,
Jinhui Yuan,
Liang Wang,
Keping Long,
Alan Pak Tao Lau,
Chao Lu
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.008409
Subject(s) - multiplexing , mimo , computer science , quadrature amplitude modulation , modulation (music) , polarization division multiplexing , optics , electronic engineering , physics , channel (broadcasting) , signal processing , telecommunications , bit error rate , digital signal processing , acoustics , engineering , computer hardware
Discrete multi-tone (DMT) modulation is an attractive modulation format for short-reach applications to achieve the best use of available channel bandwidth and signal noise ratio (SNR). In order to realize polarization-multiplexed DMT modulation with direct detection, we derive an analytical transmission model for dual polarizations with intensity modulation and direct diction (IM-DD) in this paper. Based on the model, we propose a novel polarization-interleave-multiplexed DMT modulation with direct diction (PIM-DMT-DD) transmission system, where the polarization de-multiplexing can be achieved by using a simple multiple-input-multiple-output (MIMO) equalizer and the transmission performance is optimized over two distinct received polarization states to eliminate the singularity issue of MIMO demultiplexing algorithms. The feasibility and effectiveness of the proposed PIM-DMT-DD system are investigated via theoretical analyses and simulation studies.