Patent ID: 8144818
Filing Date: 2012-03-27
Classification: H04L

Abstract:
1. A method for resolving a timing ambiguity due to limited dynamic range and periodicity of channel estimation in a communication signal comprising: determining when channel activity of the communication signal occurs in at least one of an early or a late arrival position in a communication channel estimate; unwrapping the channel activity in either the early arrival position or the late arrival position to a corresponding late or early arrival unwrapped channel activity position in the wireless channel estimate; determining symbol data in the communication signal corresponding to both the channel activity and the unwrapped channel activity; correlating the determined symbol data corresponding to both the channel activity and the unwrapped channel activity to symbol data corresponding to channel activity occurring in another portion of the channel estimate location outside of the late and early arrival positions including a maximum channel activity; and determining whether a timing position of the channel activity occurs in one of the early or late arrival positions based on the correlations of the symbol data corresponding to both the channel activity and the unwrapped channel activity to symbol data corresponding to the maximum channel activity.