US Patent 11923919 Efficient determination of RF exposure for MIMO transmitters

Aspects of the present disclosure facilitate assessment of radio frequency (RF) exposure from a wireless device supporting multiple-input-multiple-output (MIMO) transmissions using multiple antennas. In certain aspects, MIMO RF exposure distributions for one or more MIMO transmissions are determined and stored in a memory. To assess RF exposure for a MIMO transmission, a processor may retrieve the corresponding MIMO RF exposure distributions from the memory, linearly combine the MIMO RF exposure distributions to obtain a combined MIMO RF exposure distribution, and assess RF exposure compliance based on the combined MIMO RF exposure distribution. In one example, the MIMO RF exposure distribution may include MIMO specific absorption rate (SAR) distributions.