Kramers-Kronig Receiver Combined With Digital Resolution Enhancer

TL;DR

This paper presents a Kramers-Kronig receiver integrated with a digital resolution enhancer, improving performance and enabling lower-bit digital-to-analog converters in optical communication systems.

Contribution

It introduces a novel combination of a Kramers-Kronig receiver with a digital resolution enhancer to mitigate quantization noise and reduce DAC bit requirements.

Findings

Performance improvement demonstrated

Reduced need for high-bit DACs

Effective noise mitigation achieved

Abstract

A Kramers-Kronig receiver with a continuous wave tone added digitally at the transmitter is combined with a digital resolution enhancer to limit the increase in transmitter quantization noise. Performance increase is demonstrated, as well as the ability to reduce the number of bits in the digital-to-analog converter.