Patent ID: 8625656
Filing Date: 2014-01-07
Classification: H04B,H04L

Abstract:
1. An apparatus comprising: means for determining a filter selection metric for a signal to be recovered, wherein the means for determining is configured to determine the filter selection metric based on whether pilot symbols, data symbols, or a combination thereof are used to derive a channel estimate, a traffic-to-pilot ratio for the signal, an order in which the signal is recovered among a plurality of signals to be recovered, a signal-to-noise ratio (SNR) of the signal, or a combination thereof; means for selecting a channel estimation filter based on the filter selection metric, wherein the means for selecting is configured to select a first channel estimation filter when the filter selection metric indicates a first SNR within a first range of SNRs and to select a second channel estimation filter when the filter selection metric indicates a second SNR within a second range of SNRs; means for deriving a first channel estimate with the first channel estimation filter having a first filter response; means for recovering a first signal with the first channel estimate; means for estimating interference due to the first signal; means for removing the interference due to the first signal; means for deriving a second channel estimate with the second channel estimation filter having a second filter response different from the first filter response; and means for recovering a second signal with the second channel estimate.