Koforidua Technical University

Hybrid CD‐MMSE Two‐Timescale Channel Estimation for RIS‐Assisted 6G Systems

ABSTRACT Reconfigurable intelligent surfaces (RIS) represent a transformative technology for enhancing coverage and energy efficiency in sixth‐generation (6G) wireless networks. However, the substantial pilot overhead required to estimate cascaded channels remains a critical bott...

Characterizing neonatal survival across the first four years of operation of a special care baby unit in Eastern Sierra Leone

Abstract Background The recent establishment of Special Care Baby Units (SCBUs) across regional hospitals in rural Sierra Leone is an important advancement in health system infrastructure promoting high-quality perinatal care. However, there is little evidence documenting their i...