First Real‐Time Softwarization of Complete Coherent DSP Stack with Gardner Timing and Clock Recovery
Abstract
ABSTRACT This work demonstrates the first fully softwarized coherent receiver digital signal processing stack implemented on a general‐purpose graphic processing unit (GPU) platform. By introducing a data‐parallel GPU implementation for Gardner‐based timing and clock recovery (TCR), the system achieves complete real‐time receiver operation without requiring an external clock reference. The 80‐km transmission experiment on 5‐Gbit/s dual‐polarization quadrature phase shift keying (DP‐QPSK) signals resulted in an approximately 1‐dB sensitivity penalty at a target bit error rate of 10 −3 .
Fields of Study & Subjects
Optical Network Technologies
Advancements in PLL and VCO Technologies
Advanced Wireless Communication Techniques
Publication details
- Journal / source
- Electronics Letters
- Publisher
- Institution of Engineering and Technology (IET)
- Volume
- 62
- Issue
- 1
- Publication date
- 1 January 2026
- Language
- EN