Patent ID: 11881970
Assignee: NEC CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A radio wave feature value computation apparatus including:
at least one memory storing instructions; and
at least one processor configured to execute the instructions to:
designate, within a fixed signal included in a baseband signal of a received communication wave, an information-1 section and an information-2 section that are two types of signal sections having different communication information and being present in shorter time than fading of the received communication wave changing with time;
perform an information-1 section signal processing including performing Fourier transform on the designated information-1 section;
perform an information-2 section signal processing including performing Fourier transform on the designated information-2 section; and
compute a feature value for identifying an emission source of the communication wave, based on a result of the information-1 section signal processing and a result of the information-2 section signal processing.