D2.1 provides an initial assessment of the RadioWeaves infrastructure, developed in WP2 of REINDEER. Taking the description of RadioWeaves in D1.1 and the use cases and KPIs defined therein, as a starting point, a first version of the building blocks of the infrastructure are presented, together with new terminology. Architecture and topology are introduced together with a quantitative and qualitative analysis of high-level requirements on a RadioWeaves infrastructure, setting the scope for more detailed investigations and design.

D3.1 develops a framework for physical-layer performance evaluation of RadioWeaves. Specifically, an effective-SINR abstraction model is developed and shown to be accurate and highly efficient in terms of computational complexity. Furthermore, this document evaluates complexity of existing algorithms in terms of computational load and front-haul signaling for different cell-free topologies considered in the literature. It also proposes efficient algorithms for distributed MIMO processing of RadioWeaves with centralized and decentralized approaches.

A Multi-band Solution for Interacting with Energy-Neutral Devices – an academic article by Chesney Buyle, Bert Cox, Liesbet Van der Perre and Lieven De Strycker.

Reciprocity calibration of Distributed Massive MIMO Access Points for Coherent Operation – academic article by Joao Vieira and Erik G. Larsson.