Real-Time Implementation of Coherent Receiver DSP Adopting Stream Split Assignment on GPU for Flexible Optical Access Systems

Field Trial of a Flexible Real-Time Software-Defined GPU-Based Optical Receiver

“…Recently, the use of general-purpose GPUs has been demonstrated for specific functions such as forward error correction (FEC) decoding [11], [12] and physical-layer functions for optical communications [13]- [15]. Additionally, real-time DSP for optical differential quaternary phase-shift-keying (DQPSK) has been implemented on a GPU [16]- [18]. In these papers, massive parallel processing capabilities of GPUs were exploited for processing single-polarization 5 Gbit/s DQPSK signals, correcting for intersymbol interference (ISI) using a finite impulse response (FIR) filter.…”

Real-time Transmission of Geometrically-shaped Signals using a Software-defined GPU-based Optical Receiver

“…More than a decade of steady exponential improvement of computation capacity (45% yearly increase [13]) and energy efficiency (25% yearly increase [14]) of GPUs have accelerated its potential applications in the field of optical communications. Recent demonstrations include real-time forward error correction (FEC) decoding [4], [5], physical-layer functionality [6]- [8], differential quaternary phase-shift-keying (DQPSK) detection [9], and flexible multi-modulation format detection using directly detected pulse-amplitude modulated signals, Sjoerd van der Heide, Ton Koonen, and Chigo Okonkwo are with the High Capacity Optical Transmission Laboratory, Electro-Optical Communications Group, Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven, the Netherlands. (e-mail: s.p.v.d.heide@tue.nl, c.m.okonkwo@tue.nl, a.m.j.koonen@tue.nl).…”

Real-Time 10,000 km Straight-Line Transmission Using a Software-Defined GPU-Based Receiver

“…These improvements combined with low development effort and rapid turnaround have enabled recent demonstrations of real-time DSP for optical communications [6]- [14]. These demonstrations include real-time forward error correction (FEC) decoding [6], [7], physical-layer functionality [8]- [10], and differential quaternary phase-shift-keying (DQPSK) detection [11]. We introduced a real-time flexible multi-modulation format receiver for directly detected pulse-amplitude modulated signals and Kramers-Kronig (KK) [15] coherently detected minimum phase (MP) [15] Sjoerd van der Heide, Ton Koonen, and Chigo Okonkwo are with the High-Capacity Optical Transmission Laboratory, Electro-Optical Communications Group, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands (e-mail: s.p.v.d.heide@tue.nl; a.m.j.koonen@tue.nl; c.m.okonkwo@tue.nl).…”