Patent ID: 8837556
Filing Date: 2014-09-16
Classification: H04L

Abstract:
1. A method of received signal processing at a wireless communication apparatus comprising: receiving a composite signal that may include a secondary pilot signal transmitted from a remote antenna not used for serving the wireless communication apparatus; accumulating detection results over a number of measurement intervals for each candidate channel among a number of candidate channels that are known candidates for carrying the secondary pilot signal, including, in each measurement interval: measuring a signal energy for the received composite signal on a selected one of the candidate channels and logically deciding whether secondary pilot signal energy is present based on comparing the measured signal energy to a comparison threshold, and updating the detection result for the selected candidate channel by an amount dependent upon the logical decision; evaluating the accumulated detection results to blindly detect whether the secondary pilot signal is present on any of the candidate channels; and in response to blindly detecting that the secondary pilot signal is present on one of the candidate channels, suppressing interference arising from the secondary pilot signal in the received composite signal or in a desired signal included within the received composite signal.