Method and system for comparing measured radio frequency signal propagation characteristics in a wireless communication system

摘要

In a receiver in a wireless communication system, a plurality of radio frequency signal propagation characteristics associated with a signal transmitted from a transmitter in a coverage area are periodically measured. Next, the plurality of periodically measured radio frequency signal propagation characteristics are processed to produce a time averaged radio frequency signature, wherein the processing extracts the dominant features of the radio frequency signal propagation characteristics. Then the time averaged radio frequency signature is compared with a spatially averaged radio frequency signature, and a figure of merit is generated in response to the comparison. The processing may include decomposing a structured matrix containing vector representations of the plurality of periodically measured radio frequency signal propagation characteristics to extract a subspace that represents the dominant features of the radio frequency signal propagation characteristics of a signal transmitted from a transmitter in a coverage area of the wireless communication system.