Patent ID: 8666001
Filing Date: 2014-03-04
Classification: H04L

Abstract:
1. A method for processing a received digital signal, comprising: initiating a symbol recovery process using initial symbol recovery parameters to produce recovered symbols from raw symbol information by applying the initial symbol recovery parameters to the raw symbol information, the raw symbol information including periodic instances of sync information; for each instance of sync information, determining an instance-specific set of symbol recovery parameters for the instance of sync information; adjusting the raw sync information based on the instance-specific set of symbol recovery parameters to produce adjusted sync information correlating the adjusted sync information with a known sync pattern to determine whether the adjusted sync information passes or fails a correlation threshold; when the adjusted sync information passes the correlation threshold, performing a bit matching to determine a number of bits that match between the adjusted sync information and the known sync pattern; maintaining a count of a number of consecutive sync instances when both the adjusted sync information passes the correlation threshold and the bit matching indicates less than a preselected number of bits fail to match; when then count of the number of consecutive instances reaches a preselected number of consecutive instances, updating the symbol recovery parameters used by the symbol recovery process based on a recalculation of the symbol recovery parameters for one or more of the consecutive sync instances; and when, upon performing the bit matching between the adjusted sync information and the known sync pattern and more than the preselected number of bits fail to match, resetting the count of the number of consecutive instances.