Patent ID: 7623580

Claim:
A simultaneous multiple channel receiver (“SMCR”) for receiving a combined signal having a plurality of carrier signals, where each carrier signal in the plurality of carriers signals corresponds to a frequency channel, and in response simultaneously producing a plurality of output data stream signals, the SMCR comprising: a down-converter front-end capable of receiving the combined signal; a plurality of digital signal processors, wherein each digital signal processor of the plurality of digital signal processors is capable of producing an output data stream signal of the plurality of output data stream signals; a multi-band filter in signal communication with both the down-converter front-end and the plurality of digital signal processors; and a controller in signal communication with the plurality of digital signal processors and multi-band filter, wherein the controller is capable of loading new filter coefficients into the multi-band filter; a frequency-offset module located in a signal path between the down-converter front-end and the multi-band filter and in signal communication with the controller, wherein the frequency-offset module pre-rotates the frequencies in a combined digitized ensemble of frequency channels signal (“CDEFCS”) produced by the down-converter front-end by a pre-rotation value to correct for a common frequency offset of the plurality of digital signal processors, wherein the pre-rotation value is determined by the controller in response to receiving offset signals from the plurality of digital signal processors.