Scalable filterless coherent point-to-multipoint metro network architecture

Metro aggregation is one of the fastest growing segments in telecommunications in terms of data traffic. At the intersection of core and access, where coherent modules compete with direct detection technology, high capacity must be provided at low cost and low power, with enhanced scalability and flexibility. Real-life Telecom Italia Mobile metro aggregation networks are examined and their design and planning optimized. The analysis is supported by techno-economics, which compares two coherent solutions: traditional point-to-point (P2P) and digital subcarrier (DSC)-based coherent modules for P2P and point-to-multipoint transmission. We demonstrate that the greater flexibility of DSC-based coherent modules leads to significant cost savings over a three-phase network deployment.

Automated summary

Metro aggregation is a rapidly growing segment in the telecommunications industry, requiring high capacity and low cost solutions at the intersection of core and access. This study examines Telecom Italia Mobile's metro aggregation networks and optimizes their design and planning. By comparing traditional point-to-point and digital subcarrier-based coherent modules, we find that the flexibility of the latter leads to significant cost savings in network deployment.