Phase noise suppression

A method comprising:

• generating, by local oscillator circuitry, a local oscillator signal;
• introducing, by phase noise determination circuitry, a frequency-dependent phase shift to said local oscillator signal to generate a phase-shifted version of said local oscillator signal;
• mixing, by mixing circuitry, said local oscillator signal and said phase-shifted version of said local oscillator to generate a baseband signal having an amplitude proportional to a phase difference between said local oscillator signal and said phase-shifted version of said local oscillator signal;
• processing, by digital signal processing circuitry, said baseband signal to determine a phase error of said local oscillator signal;
• and
• performing, by said digital signal processing circuitry, signal compensation based on said determined phase error.

A system comprising:

• local oscillator circuitry operable to generate a local oscillator signal having phase error;
• analog circuitry, including one or more phase discriminators and a mixer, operable to generate a signal representative of said phase error;
• and
• digital circuitry operable to perform signal compensation based on said signal representative of said phase error.