Spectrum Configuration Framework for Throughput Maximization in Open Systems with Roll-Off-Based QoT Optimization
🤖 AI Summary
This work addresses the joint optimization of modulation format, symbol rate, pulse-shaping roll-off factor, and WSS bandwidth in open and disaggregated optical systems under fixed spectrum allocation and limited transceiver resources, aiming to maximize throughput while ensuring a quality-of-transmission (QoT) margin. For the first time, experimental results reveal the critical impact of the roll-off factor on QoT under cascaded WSS filtering, which is then incorporated into a knapsack-based optimization model tailored for Optical Spectrum-as-a-Service (OSaaS) to enable adaptive trade-offs between throughput and QoT margin. Validation on a metro-scale testbed demonstrates that the proposed approach significantly enhances spectral efficiency, achieving an effective balance between throughput and transmission quality.
Application Category
📝 Abstract
We propose a spectrum-configuration framework for open and disaggregated optical systems that maximizes throughput while guaranteeing the quality of transmission (QoT) margins. The framework jointly optimizes transceiver parameters, including modulation format, symbol rate, pulse-shaping roll-off factor, and wavelength-selective switch (WSS) bandwidth, under fixed spectral allocation constraints. The impact of roll-off factor optimization is first experimentally evaluated in the presence of cascaded WSS filtering, demonstrating measurable QoT gains for both single- and multi-channel transmission. Building on these observations, a knapsack-based optimization is applied in the context of Optical Spectrum as a Service (OSaaS) to select service configurations that maximize aggregate throughput within a fixed spectrum width and limited transceiver resources. Experimental validation on a metro-scale open testbed confirms the effectiveness of the proposed approach in achieving efficient spectrum utilization and adaptive throughput-margin trade-offs.
Problem
Research questions and friction points this paper is trying to address.
spectrum configuration
throughput maximization
quality of transmission
open optical systems
roll-off factor
Innovation
Methods, ideas, or system contributions that make the work stand out.
roll-off optimization
spectrum configuration
quality of transmission (QoT)
Optical Spectrum as a Service (OSaaS)
knapsack-based optimization
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