Full-spectrum cell-free RAN for 6G systems: system design and experimental results

With distributed transceivers and scalable cooperative transmission, cell-free massive multiple-input multiple-output (CF-mMIMO) technology eliminates the “cells” of traditional mobile communications, thereby significantly improving performance wireless networks. CF-mMIMO is considered as a major technical tool for achieving key indicators sixth generation (6G) communication systems. In this paper, implementation architecture proposed, based on which potential technologies such channel information acquisition, transceiver design, dynamic user access point association, novel duplexing are introduced. Finally, low-cost commercial points, testbed with 64 transmit receive antennas developed, receiver design evaluated.