In this letter, we consider the problem of channel estimation for large intelligent metasurface
(LIM) assisted massive multiple-input multiple-output (MIMO) systems. The main challenge …

Thanks to the line-of-sight (LoS) transmission and flexibility, unmanned aerial vehicles (UAVs)
effectively improve the throughput of wireless networks. Nevertheless, the LoS links are …

Reconfigurable intelligent surfaces (RISs) are regarded as a promising emerging hardware
technology to improve the spectrum and energy efficiency of wireless networks by artificially …

Many remote and local climate variabilities influence Antarctic sea ice at different time scales.
The strongest sea ice teleconnection at the interannual time scale was found between El …

This study investigates the nature of interannual variability of Antarctic sea ice and its relationship
with the tropical climate. We find that the dominant interannual variance structure in the …

This study statistically evaluates the relationship between Antarctic sea ice extent and global
climate variability. Temporal cross correlations between detrended Antarctic sea ice edge (…

Millimeter wave (MmWave) communications is capable of supporting multi-gigabit wireless
access thanks to its abundant spectrum resource. However, severe path loss and high …

Over the modern satellite era, substantial climatic changes have been observed in the Antarctic,
including atmospheric and oceanic warming, ice sheet thinning and a general Antarctic-…

This paper investigates a novel unmanned aerial vehicles (UAVs) secure communication
system with the assistance of reconfigurable intelligent surfaces (RISs), where a UAV and a …

Reconfigurable intelligent surface (RIS) is envisioned to be an essential component of the
paradigm for beyond 5G networks as it can potentially provide similar or higher array gains …