Patent ID: 8675796
Filing Date: 2014-03-18
Classification: H04B,H04W

Abstract:
1. A method for coherent interference suppression in a wireless communication system, comprising the steps of: receiving a burst of symbols; generating a plurality of timing hypotheses for the burst of symbols using a set of known reference symbols and a subset of the received burst of symbols in a channel input configuration, wherein the generating the plurality of timing hypotheses comprises estimating a position of a reference symbol in the burst of symbols and selecting the subset of the burst of symbols from symbols centered around the estimated position of the reference symbol; for each timing hypothesis: calculating a plurality of weights fur an interference suppression filter based on minimizing a cost function associated with each timing hypothesis of the subset of the burst of symbols; filtering the burst of symbols using the interference suppression filter with the corresponding plurality of weights for calculating an estimation error for each timing hypothesis by comparing an estimated set of reference symbols with the known set of known reference symbols to determine the estimation error, wherein size of the plurality of weights increases linearly with a number of antennas receiving the burst of symbols, and output size of the filtering the burst of symbols remains constant; selecting one of the plurality of timing hypotheses corresponding to a selection criteria based on the determined estimation error; equalizing the filtered burst of symbols based upon the selected one of the plurality of timing hypotheses; and decoding the filtered burst of symbols based upon the selected one of the plurality of timing hypotheses.