DSP assisted and on demand RF and analog domain processing for low power wireless transceivers

An apparatus for operating a wireless transmitter, the apparatus comprising a processor configured to cause the wireless transmitter to:

• determine a current modulation and coding scheme;
• generate a digital signal according to the current modulation and coding scheme;
• operate on the digital signal to pre-correct for distortions associated with analog circuitry of the wireless transmitter;
• after said operating on the digital signal, convert the digital signal to an analog intermediate signal using a digital-to-analog conversion (DAC) circuit;
• generate an RF signal based on the analog intermediate signal using one or more analog circuits;
• determine a second constraint on out-of-band (OOB) emissions, wherein the second constraint is based on the current modulation and coding scheme;
• and
• adjust a level of processing fidelity, wherein said adjusting the level of processing fidelity is performed in order to achieve the second constraint on OOB emissions.

A wireless receiver, comprising:

• a radio;
• and
• a processor operably coupled to the radio and configured to cause the wireless receiver to:
• receive an RF signal;
• operate on the RF signal with one or more analog circuits to obtain an analog intermediate signal, wherein the one or more analog circuits comprise an analog filter;
• sample the analog intermediate signal using an analog-to-digital conversion (ADC) circuit to obtain a digital signal;
• analyze the RF signal, the analog intermediate signal, and the digital signal to determine a level of signal processing fidelity that the wireless receiver should satisfy, wherein the level of signal processing fidelity that the wireless receiver should satisfy comprises an allowed amount of distortion;
• and
• modify a configuration of the wireless receiver based on the determined level of signal processing fidelity that the wireless receiver should satisfy, wherein said modifying the configuration of the wireless receiver comprises dynamically adjusting an extent of distortion of the analog filter based on the determined level of signal processing fidelity that the wireless receiver should satisfy.