… In this paper, we propose a new channel estimation scheme for TDD/FDD massive MIMO
systems … Specifically, the angle and PAS parameters of channel are first extracted from one …

… for an arbitrary number of users served in the massive MIMO system by exploiting the …
desired channel vector. By generalizing the downlink channels in FDD massive MIMO systems to …

… We consider the problem of downlink training and channel estimation in a FDD massive
MIMO system, where the BS equipped with a large number of antennas serves a number of …

… an efficient approach to enable massive MIMO to be backward compatible with … channel
estimation and feedback for FDD massive MIMO. Channel estimations in small-scale MIMO are …

… channel estimate. In other words, the DL training overhead, which is a bottleneck in FDD
massive MIMO system, can be reduced by utilizing the information from simpler UL training. …

… The current work endeavors to optimize the achievable rates of FDD massive MIMO systems.
Specifically, we propose eigenspace channel estimation methods to improve the system …

… Channel Model We consider the DL of a FDD massive MIMO system, where a BS with Mt
transmit antennas sends signals to the MS that is equipped withMr receive antennas. After …

… channel estimation scheme is proposed for the DL channel estimation in FDD massive MIMO
system… This is based on the the observation that the channel statistics changes with a low …

… Review of Downlink Channel Estimation In this subsection, we review the state-of-the-art
DFT-based sparse channel estimation for the downlink channel in an FDD system. Assume that …

… compressed channel estimation scheme for a FDD massive MIMO system is developed,
which improves downlink channel estimation using information from uplink channel training. …