1. A device operable to prevent merging of demodulation elements (fingers), comprising: at least one comparator operative to receive and compare a position of a target finger designated to be adjusted with a position of each of at least one candidate finger for which merging is to be prevented; and a merge detector operative to determine whether merging is detected for any candidate finger, and wherein the target finger is allowed to be adjusted if merging is not detected for the at least one candidate finger.