METHOD AND APPARATUS FOR SIGNAL-TO-NOISE RATIO CALCULATION IN RADIOCOMMUNICATION SYSTEMS USING MEASUREMENTS OF SUPERVISORY AUDIO TONES.

摘要

Methods and system for measuring signal noise of supervisory audio tones (SATs) in radiocommunication systems are disclosed. Exemplary embodiments involve extracting a real component from a received SAT signal, removing the SAT signal portion and examining the remainder to determine a noise component present in the SAT. The noise component can be compared with a signal strength measurement to obtain a signal-to-noise ratio.