… In this letter, we investigate a novel CSIT acquisition scheme for FDD massive MIMO
systems by exploiting the property that the channel matrix of massive MIMO system has low-rank …

… the CSIT acquisition … CSIT feedback codebooks, exploiting the multiuser spatial channel
correlation. We compare our achievable rates with TDD massive MIMO systems, iid FDD systems…

… In this paper, we have investigated the challenging problem of CSIT acquisition for FDD
massive MIMO systems, which exhibits the overwhelming training and feedback overhead in …

… An alternative CSI acquisition scheme is critically needed. In this paper, we propose a novel
FDD massive MIMO system based on a spatial DL channel estimation scheme; it relies on …

… work to this paper is to use UL pilots to acquire DL CSIT in FDD massive MIMO [21], [22], [36]…
algorithm was proposed using UL pilots in generic FDD wireless systems [21]. The idea was …

… Abstract—Acquisition of accurate channel state information (CSI) at the transmitter (… TDD
systems [1]. It is much more challenging to obtain accurate CSIT in FDD massive MIMO systems. …

… (FDD) massive MIMO systems is that the acquisition of channel state information at the
transmitter side (CSIT) … Recently, compressive sensing (CS) based CSIT estimation approaches …

… the challenging problem of CSIT acquisition in FDD massive MIMO systems. We utilize the
low-rank property of MIMO channel matrix to propose a joint CSIT acquisition scheme and …

… massive MIMO systems because of the overwhelming training and feedback overhead. In
this paper, we consider multi-user massive MIMO systems … the CSIT estimation. The multi-user …

… Such “closedloop” operation streamlines the CSIT acquisition process by removing channel
estimation and the compression procedures at the user side. In addition, our proposed …