We investigate the age-limited capacity of Gaussian many channel with total $N$ users, out which a random subset notation="LaTeX">$K_{a}$ users are active in any transmission period, and large-scale antenna array at base station (BS)....

We consider a dynamic time division duplex (DTDD) enabled cell-free massive multiple-input multiple-output (CF-mMIMO) system, where each half-duplex (HD) access point (AP) is scheduled to operate in the uplink (UL) or downlink (DL) mode based on data demands of user equipments (UEs), with goal maximizing sum UL-DL spectral efficiency (SE). develop new, low complexity, greedy algorithm for combi...