Patent ID: 8543074

Claim:
A method for use in a radio receiver, comprising the steps of: receiving an analog radio frequency (RF) signal; converting the analog RF signal to a digital RF signal at a sample rate of f ADC to generate a serial stream of RF samples; converting the serial stream of RF samples into M parallel streams of RF samples, each stream having a sampling rate of f ADC /M, where M is a positive integer greater than 1; translating the M parallel streams of RF samples to M parallel streams of intermediate frequency (IF) samples centered about an IF of f ADC /4, the M parallel streams of IF samples including a first set of even IF samples and a second set of odd IF samples; demodulating the M parallel streams of IF samples by applying a first set of associated coefficients to the first set of even IF samples to produce a first set of even demodulated samples and applying a second set of associated coefficients to the second set of odd IF samples to produce a second set of odd demodulated samples; and filtering the even demodulated samples using a first set of filter coefficients of a digital filter and the odd demodulated samples using a second set of filter coefficients of the digital filter to produce a complex baseband signal.