Open AccessAnalog nonlinear MIMO receiver for optical mode division multiplexing transmission
Author(s) -
A. Spalvieri,
Pierpaolo Boffi,
Simone Pecorino,
Luca Barletta,
Maurizio Magarini,
Alberto Gatto,
Paolo Martelli,
Mario Martinelli
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.025174
Subject(s) - mimo , multiplexing , spatial multiplexing , electronic engineering , computer science , signal processing , optics , crosstalk , mimo ofdm , photodetection , digital signal processing , telecommunications , physics , photodetector , engineering , channel (broadcasting)
The complexity and the power consumption of digital signal processing are crucial issues in optical transmission systems based on mode division multiplexing and coherent multiple-input multiple-output (MIMO) processing at the receiver. In this paper the inherent characteristic of spatial separation between fiber modes is exploited, getting a MIMO system where joint demultiplexing and detection is based on spatially separated photodetectors. After photodetection, one has a MIMO system with nonlinear crosstalk between modes. The paper shows that the nonlinear crosstalk can be dealt with by a low-complexity and non-adaptive detection scheme, at least in the cases presented in the paper.