Wireless communication device and method for enhanced resolution spectrum monitoring

A method for enhanced resolution spectrum monitoring, the method comprising:

• in a wireless communication device:
• receiving radio frequency (RF) signals across a plurality of frequency bands;
• applying band-specific filtering operation to the received RF signals to obtain filtered RF signals;
• converting the filtered RF signals to one or more intermediate frequencies (IFs) to obtain IF signals;
• digitizing the IF signals at the one or more IFs to obtain digitized IF signals;
• executing a plurality of spectrum measurements for the digitized IF signals, wherein
• each spectrum measurement of the plurality of spectrum measurements is based on a different offset frequency of a sequence of offset frequencies, and
• the each spectrum measurement is associated with a first frequency resolution;
• storing phase coherence information for the each spectrum measurement of the plurality of spectrum measurements based on the different offset frequency of the sequence of offset frequencies;
• and
• combining the plurality of spectrum measurements based on the stored phase coherence information to generate a spectrum analysis output with a second frequency resolution, wherein the second frequency resolution exceeds the first frequency resolution.

A computer program product for enhanced resolution spectrum monitoring, the computer program product comprising a non-transitory computer-readable storage medium having program instructions embodied therewith, the program instructions are executable by a system to cause the system to execute operations, the operations comprising:

• receiving radio frequency (RF) signals across a plurality of frequency bands;
• applying band-specific filtering operation to the received RF signals to obtain filtered RF signals;
• converting the filtered RF signals to one or more intermediate frequencies (IFs) to obtain IF signals;
• digitizing the IF signals at the one or more IFs to obtain digitized IF signals;
• executing a plurality of spectrum measurements for the digitized IF signals, wherein
• each spectrum measurement of the plurality of spectrum measurements is based on a different offset frequency of a sequence of offset frequencies, and
• the each spectrum measurement is associated with a first frequency resolution;
• storing phase coherence information for the each spectrum measurement of the plurality of spectrum measurements based on the different offset frequency of the sequence of offset frequencies;
• and
• combining the plurality of spectrum measurements based on the stored phase coherence information to generate a spectrum analysis output with a second frequency resolution, wherein the second frequency resolution exceeds the first frequency resolution.