Physical architecture, system and network requirements

The purpose is to list and categorize the possible solutions and primarily specify the required extensions for the support of the SDM capabilities offered by the network. The solutions are then adapted to the proposed architecture with emphasis on: a) the network dimensioning and coverage, including the number of supported RRU sites b) the exact definition of the operating parameters, including (and not limited to) the number of wavelengths per fiber/core, the frequency bands to be considered, the targeted modulation formats, c) the end user coverage options considering the required and supported number of antenna elements per RRU and the grouping of elements supported by the SDM approach.