System and method to perform DC compensation on a radio frequency burst in a cellular wireless network

A wireless terminal that comprises:

• a Radio Frequency (RF) front end;
• a baseband processor communicatively coupled to the RF front end;
• an enCOder/DECoder (CODEC) processing module communicatively coupled to the baseband processor;
• wherein, the RF front end, the baseband processor, and the CODEC processing module are operable to:
• receive a first RF burst, wherein the RF burst is modulated according to either a first modulation format or a second modulation format;
• produce a plurality of samples from the first RF burst;
• average the plurality of samples to produce a direct current (DC) offset estimate;
• subtract the DC offset estimate from each of the plurality of samples;
• identify the modulation format of the RF burst from the plurality of DC offset estimated subtracted samples;
• add the DC offset estimate to each of the plurality of DC offset estimated subtracted samples when the second modulation format was identified as the modulation format of the RF burst;
• and
• demodulate the RF burst according to the identified modulation format.

A wireless terminal that comprises:

• a Radio Frequency (RF) front end;
• a baseband processor communicatively coupled to the RF front end;
• wherein, the RF front end and the baseband processor are operable to:
• receive a first RF burst, wherein the RF burst is modulated according to either a first modulation format or a second modulation format;
• produce a plurality of samples from the first RF burst;
• average the plurality of samples to produce a direct current offset estimate;
• subtract the DC offset estimate from each of the plurality of samples;
• identify the modulation format of the RF burst from the plurality of DC offset estimate subtracted samples;
• add the DC offset estimate to each of the plurality of DC offset estimate subtracted samples when the second modulation format was identified as the modulation format of the RF burst;
• and
• demodulate the RF burst according to the identified modulation format.

A method to perform direct current (DC) compensation on a Radio Frequency (RF) burst, the method comprises:

• receiving the RF burst, wherein the RF burst is modulated according to either a first modulation format or a second modulation format;
• producing a plurality of samples from the RF burst;
• averaging at least some of the plurality of samples to produce a DC offset estimate;
• subtracting the DC offset estimate from each of the plurality of samples;
• identifying the modulation format of the RF burst from the plurality of DC offset estimate subtracted samples;
• adding the DC offset estimate to each of the plurality of DC offset estimate subtracted samples when the second modulation format was identified as the modulation format of the RF burst;
• and
• demodulating the plurality of samples according to the identified modulation format of the RF burst.

A method to perform direct current (DC) compensation on a communications burst, the method comprises:

• receiving the RF burst, wherein the RF burst is modulated according to either a first modulation format or a second modulation format;
• producing a plurality of samples from the RF burst;
• averaging at least some of the plurality of samples to produce a DC offset estimate;
• subtracting the DC offset estimate from each of the plurality of samples;
• identifying the modulation format of the RF burst from the plurality of DC offset estimate subtracted samples;
• adding the DC offset estimate to each of the plurality of DC offset estimate subtracted samples when the second modulation format was identified as the modulation format of the RF burst;
• and
• demodulating the plurality of samples according to the identified modulation format of the RF burst.