Patent ID: 7068735

Claim:
A method to perform direct current (DC) compensation on a Radio Frequency (RF) burst, wherein the RF burst is transmitted between a servicing base station and a wireless terminal in a cellular wireless communication system, 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.