ASIC Implementation of Time-Domain Digital Back Propagation for Coherent Receivers
Artikel i vetenskaplig tidskrift, 2018

Digital back propagation (DBP) is often proposed and implemented offline for the mitigation of nonlinear impairments in long-haul fiber communications. However, complexity in terms of chip area and power consumption in a realistic application-specific integrated circuit implementation is yet to be determined. Here, we implement time-domain DBP (TD-DBP) in a 28-nm fully-depleted silicon-on-insulator process technology, considering digital implementation aspects such as limited-resolution arithmetic and finite-length filters. We choose as example a coherent optical transmission system, viz. a single-channel, single-polarization, and 20-GBd 16-QAM system, for which the DBP is known to perform well. For the considered system, we find that the TD-DBP can enable a reach increase from 3400 to 5300 km, at a power dissipation of <20 W (or, conversely, an energy dissipation of <230 pJ/bit), at a pre-FEC BER of 10-2.

digital signal processing

application specific integrated circuits

nonlinearity compensation

Optical fiber communication

Författare

Christoffer Fougstedt

Chalmers, Data- och informationsteknik, Datorteknik

Lars Svensson

Electronics Systems

Mikael Mazur

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Magnus Karlsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Per Larsson-Edefors

Electronics Systems

IEEE Photonics Technology Letters

1041-1135 (ISSN)

Vol. 30 1179-1182

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Telekommunikation

Signalbehandling

Annan elektroteknik och elektronik

DOI

10.1109/LPT.2018.2837349