Table 2 Quantitative comparative analysis of recent synchronization Methods.

From: Asynchronous to synchronous waveform conversion for high frequency microwave and optical signals without external triggering

Feature

Dual Sampler Synchronization

HTB Device (Tankeliun et al.)

Hardware-Efficient L-DACS1

Dual-Edge Sampler

IEEE 1588 Network Sync

Synchronization Accuracy

~ 2–5 ps (statistical)

< 0.5 ps (phase-locked)

STO < 0.1 sample, CFO < 0.001

< 5 ps

< 1 µs (typical), < 100 ns (best)

Jitter Reduction

Corrects ± 5 ps

> 2× reduction (to ~ 1.2 ps)

Robust at SNR > 8 dB

N/A

N/A

Drift Elimination

Software correction

< 0.1 ps/hour

N/A

N/A

N/A

Power Consumption

Minimal (software)

Standard oscilloscope

< 1 mW (FPGA)

Standard

Networked hardware

Implementation Complexity

Low

High

Very Low

Medium

High

Hardware Requirements

None/minimal

Custom, precise

FPGA

Custom logic

Networked clocks