Scaling Up MIMO: Opportunities and Challenges with Very Large Arrays
Time-Frequency Training OFDM with High Spectral Efficiency and Improved Performance over Fast Fading Channels
Joint channel estimation and feedback with low overhead for FDD massive MIMO systems
A Linear Precoding Scheme for Downlink Multiuser MIMO Precoding Systems
Time-Frequency Training OFDM with High Spectral Efficiency and Reliable Performance in High Speed Environments
Spectrum-efficient coherent optical zero padding OFDM for future high-speed transport networks