Patent ID: 8989311
Filing Date: 2015-03-24
Classification: H04L

Abstract:
1. A channel estimation method, comprising: loading a first method of deriving a channel estimate into a wireless receiver processor, the first method using a method of channel estimation advantageous in reception situations having high Doppler spreads; loading a second method of deriving a channel estimate into the wireless receiver processor, the second method using a method of channel estimation advantageous in reception situations having low Doppler spreads; identifying a plurality of candidate paths, each candidate path having a power attribute; extracting a plurality of significant candidate paths from the identified plurality of candidate paths; calculating a power ratio of the power attribute of the extracted plurality of significant candidate paths relative to total power of all the plurality of identified candidate paths; determining if the calculated power ratio is less than a first threshold value; selecting, in the wireless receiver processor, the first method of deriving a channel estimate if the calculated power ratio was determined to be greater than or equal to the first threshold value, otherwise selecting the second method; and using the selected method to derive the channel estimation in the wireless receiver processor.