Technology Category
Planning, Routing, and Scheduling: Optimization of Spatio-temporal SystemsSearch and Optimization: Mixed Discrete/Continuous SearchConstraint Satisfaction and Optimization: Distributed CSP/Optimization
On the Bit Error Rate Fluctuation Induced by Multipath Interference in the Coherent Regime for Intra Data Center Applications
🤖 AI Summary
This study addresses the impact of multipath interference (MPI) on PAM-4 signaling in coherent optical interconnects for data centers, where MPI induces constellation scaling and consequent fluctuations in bit error rate (BER). For the first time, this work theoretically elucidates the underlying mechanism of this phenomenon within coherent detection systems. By establishing a signal model that accounts for multipath propagation, the authors systematically analyze how MPI distorts PAM-4 modulation formats and uncover the physical relationship between constellation scaling and BER variations. The findings provide a rigorous theoretical foundation for understanding MPI effects in coherent optical links and offer critical insights for optimizing the design of high-density data center optical interconnect systems.
Technology Category
Application Category
📝 Abstract
We theoretically explain how multipath interference resizes PAM-4 constellation in the coherent regime and thus increases bit error rate fluctuation in intra data centers for the first time.
Problem
Research questions and friction points this paper is trying to address.
Bit Error Rate
Multipath Interference
Coherent Regime
PAM-4
Data Center
Innovation
Methods, ideas, or system contributions that make the work stand out.
multipath interference
coherent regime
PAM-4 constellation
bit error rate fluctuation
intra data center
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