Detection of spoofing or jamming attacks in wireless communication system

A receiving device comprising:

• at least one antenna;
• a transceiver;
• and
• at least one processor configured to detect a modification, due to an interferer, of a wireless channel between a transmitting device and the receiving device, the processor executing instructions read from a memory to:
• measure, based on digital signals provided from the transceiver derived from wireless signals received by the at least one antenna, first and second samples of channel frequency response (CFR) of the wireless channel within a time interval less than or equal to a pre-established static time interval throughout which the wireless channel is expected to exhibit a static characteristic in an environment without any interferer;
• and
• detect that the interferer has modified the wireless channel when a similarity condition reflecting a degree of similarity between the first and second CFR samples is not satisfied.

A method for detecting a modification, due to an interferer, of a wireless channel between a transmitting device and a receiving device, comprising:

• during a training phase, performing a training procedure comprising:
• communicating training signals between the transmitting and receiving devices at frequencies distributed over an operating frequency band in the absence of an interferer;
• sampling, at the receiving device, the training signals at each of the frequencies to obtain samples of channel frequency response (CFR) over time;
• determining a static time interval based on the CFR samples;
• and
• determining a CFR similarity condition for a static characteristic of the wireless channel based on the CFR samples;
• and
• during an operational phase, detecting a modification of the wireless channel due to the interferer when the CFR similarity condition is not satisfied with respect to a pair of CFR samples taken during a time interval less than or equal to the static time interval.