Selectively activating oscillation modules based on signal strengths

A system, comprising:

• a receiver chain configured to produce a digitized output signal based on a received analog signal;
• a received signal strength indication (RSSI) circuit configured to determine an RSSI based on the received analog signal;
• a first oscillator configured to provide a first oscillating signal to a phase locked loop (PLL);
• a second oscillator configured to provide a second oscillating signal to the PLL, the second oscillator having a higher power consumption than the first oscillator, and the second oscillating signal having less noise than the first oscillating signal;
• and
• a controller coupled to the receiver chain, the RSSI circuit, and the first and second oscillators, the controller configured to:
• activate or deactivate the first oscillator, and activate or deactivate the second oscillator, based on the determined RSSI and a strength of the digitized output signal;
• and record samples of the determined RSSI and samples of the strength of the digitized output signal.

A method, comprising:

• obtaining signal strength values that characterize a wireless medium;
• determining characteristics of primary and interference signals in the wireless medium based on the signal strength values;
• adjusting a synthesizer performance mode based on the determined characteristics, the synthesizer comprising at least one oscillator;
• and
• determining a time to adjust the synthesizer performance mode based on a time log of the determined characteristics.

A method, comprising:

• obtaining signal strength values that characterize a wireless medium;
• determining characteristics of primary and interference signals in the wireless medium based on the signal strength values, wherein determining the characteristics comprises comparing strengths of the primary signals to strengths of composite signals comprising both the primary and interference signals;
• and
• adjusting a synthesizer performance mode based on the determined characteristics, the synthesizer comprising at least one oscillator.

A method comprising:

• obtaining signal strength values that characterize a wireless medium;
• determining characteristics of primary and interference signals in the wireless medium based on the signal strength values;
• adjusting a synthesizer performance mode based on the determined characteristics, the synthesizer comprising at least one oscillator;
• selecting a voltage-controlled oscillator (VCO) from among a group of voltage-controlled oscillators using a first digital output code generated using a reference clock signal and a feedback clock signal;
• selecting a capacitor configuration in the VCO using a second digital output code generated based on the reference clock signal and the feedback clock signal;
• tuning a varactor of the VCO based on the reference clock signal and the feedback clock signal;
• and
• recording the first and second digital output codes in a data structure.