A Wideband Distributed Massive MIMO Channel Sounder for Communication and Sensing - Sandra, M.; Nelson, C.; Li, X.; Cai, X.; Tufvesson, F.; Johansson, A.J. (IEEE Transactions on Antennas and Propagation, Antennas and Propagation, IEEE Transactions on, IEEE Trans. Antennas Propagat., 2025)