Patent Document ID: 20150135293
Application ID: 14343244
Patent Flag: 0

Claim One:
1. A method of authenticating a transmitting device in a communication system using at least one multi-mode reconfigurable antenna, comprising the steps of: collecting wireless channel information for different antenna modes of said at least one reconfigurable antenna for a legitimate transmitter; combining the collected wireless channel information for different modes of said at least one reconfigurable antenna into a characteristic transmission fingerprint; forming a detection threshold based on the characteristic transmission fingerprint for the legitimate transmitter at the outset of a communication connection; comparing wireless channel information from a later transmission with said fingerprint based on a test metric to determine if the wireless channel information from the later transmission corresponds to said fingerprint within a designated threshold; and identifying the transmitter of said later transmission as an intruder if said wireless channel transmission does not correspond to said fingerprint within said designated threshold.