Meaning
Real time digital signal processing techniques compute rolling moving averages of transmitted power over defined temporal windows to enforce RF exposure regulatory compliance. Sliding window algorithms calculate time averaged specific absorption rate values continuously during active radio transmissions. The processing mechanism allows wireless devices to transmit high peak power levels short term while guaranteeing long term average power stays below statutory caps.
The scope of this algorithmic processing applies to temporal transmit power accounting, operating independently of spatial field distribution and antenna radiation patterns.
Time Averaging
Regulatory limits for human exposure specify time averaging windows of 6 minutes for sub-6 GHz frequencies and 4 seconds for millimeter wave bands. Implementing sliding window algorithms ensures continuous compliance by tracking historical transmit energy in real time buffer memories.
Window Duration
As new power samples enter the rolling window calculation, oldest samples drop off the buffer edge. Sliding window algorithms adjust allowed transmit headroom frame by frame based on remaining duty cycle allowance.
Power Tracking
Burst data transfers maximize throughput by utilizing available power margin accumulated during idle transmit periods. If rolling transmit power approaches maximum regulatory thresholds, sliding window algorithms force immediate power throttling to prevent exposure overruns.
