DETECTING AND MINIMIZING THE EFFECTS OF TRANSMITTER NOISE ONSIGNAL STRENGTH MEASUREMENT IN A WIRELESS COMMUNICATION SYSTEM

摘要

A system and method for minimizing effects of both internal and external transmitter noise in order to improve control decisions that are based on signal strength measurements. A wireless network includes an internal transmitter transmitting a first signal at a first frequency and noise at other frequencies in a known pattern. The signal strength of the first signa l is measured by the receiver at the first frequency. The noise of the transmitter of the first signal is calculated on other frequencies, using th e first transmitter's known noise pattern. A determination is then made whethe r the noise of the first signal is above a threshold on one or more of the oth er frequencies used by the wireless communication system. If the noise is above the threshold, corrective action is taken. The wireless network further includes one or more receivers that measure signal strengths on the range of frequencies used by the system. A correlation is made between the known spectral pattern of transmitters external to the system and the signal strength measurements. If the correlation is above a threshold, then externa l noise is present and corrective action is taken.