Patent ID: 7559076
Filing Date: 2009-07-07
Classification: H04L,H04N

Abstract:
1. A communication receiver, comprising: an analog to digital converter that is operable to digitally sample a received analog signal to generate a digital signal; an up-sampler, communicatively coupled to the analog to digital converter, that is operable to increase a sample rate of the digital signal thereby generating an over-sampled digital data stream; an interpolation filter, communicatively coupled to the up-sampler, that is operable to remove a spectral repeat from the over-sampled digital data stream; and a variable interpolation/decimation filter, communicatively coupled to the interpolation filter, that is operable to recover a transmitted symbol from the over-sampled digital data stream; and wherein: the analog to digital converter being clocked at a first frequency that is greater than twice a highest frequency component in the received analog signal and that is less than a second frequency at which the up-sampler is clocked; and up sampling, as performed by the up-sampler, is performed by a factor corresponding to a reduction in the first frequency at which the analog to digital converter being clocked as compared to the second frequency at which the up-sampler is clocked.