Digital Longitudinal Monitoring refers to the continuous, systematic collection and analysis of digital data over an extended period to track changes, trends, and patterns. This approach leverages digital tools and technologies to monitor various aspects, such as health metrics, environmental conditions, user behavior, or system performance, providing insights into how these factors evolve over time.
We report the first field demonstration of 4D link tomography using a commercial transponder, which offers distance, time, frequency, and polarization-resolved monitoring. This scheme enables autonomous transponders that identify locations of multiple QoT degradation causes.
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NEC Laboratories America, Inc. (NEC Labs) is the US-based center for NEC Corporation’s global network of corporate research laboratories. Our diverse research groups collaborate with industry, academia and governments to provide disruptive solutions to complex problems. A leader in the integration of IT and network technologies with more than 100 years of expertise, NEC provides a combination of products and solutions that cross-utilize the company’s experience and global resources to meet the complex and ever-changing needs of its customers.