Adjacent Channel Leakage Ratio (ACLR)
ACLR measures how much of a transmitter's power leaks into the neighbouring channel; adjacent channel selectivity (ACS) measures how well a receiver rejects signals in the neighbouring channel.
What is Adjacent Channel Leakage Ratio (ACLR)?
Both are key 3GPP base station requirements. Cumulative ACLR (CACLR) applies when a gap between carriers is surrounded by transmissions on both sides.