Patent ID: 7388936
Filing Date: 2008-06-17
Classification: H04L

Abstract:
1. A method of performing operations of a digital receiver unit comprising: receiving data and storing the data in a sample buffer; computing an average of the sampled data in said sample buffer so as to aid in estimating an initial DC offset of said sampled data; subtracting said initial DC offset from said sampled data to form a second set of data; performing an I/Q phase imbalance estimation and correction on said second set of data to form an third data set; performing a joint DC offset and channel impulse response (CIR) estimation on said third data set and subtracting said DC offset to form a fourth data set; performing an estimation of the number and position of the remaining CIR taps with respect to the largest energy tap associated with the fourth data set to form a fifth data set; performing an estimation of the interference associated with said fifth data set so as to suppress adjacent channel interference (ACI) and co-channel interference (CCI); performing a filtering operation to remove the interference in accordance with whether said fifth data set is associated with ACI or CCI interference to form a sixth data set; performing a channel impulse response estimation on said sixth data set to form a seventh data set; and computing the CIR length and SNR value of said seventh data set so as to determine which of at least two low complexity equalization modules are used for processing.