Patent ID: 7933566

Claim:
A method to detect cordless phones, the method comprising: obtaining sampled spectrum data and storing the sampled spectrum data in a buffer of a memory, wherein the memory is a component of a processor-based system, the sampled spectrum data comprising narrowband components and wideband components; separating the narrowband components from the wideband components; and analyzing the narrowband components for presence of a worldwide digital cordless telephone (WDCT) by: separating selected narrowband components from the narrowband components, wherein the selected narrowband components exceed a predetermined threshold; obtaining a plurality of frequency-coherent signal components (FCSCs) from adjacent time slices of the selected narrowband components, wherein each FCSC comprises a component that has the same center frequency and bandwidth as one of the signal components in its adjacent slice; extracting a distinct FCSC group from each pair of the plurality of FCSCs; extracting a distinct FCSC sequence from two or more distinct FCSC groups; and comparing the distinct FCSC sequence to a WDCT signature.