Patent ID: 8755761

Claim:
Apparatus for processing two received signals, said apparatus comprising: N signal shifters each associated with a respective one of N input signals derived from said two received signals, each of said N signal shifters being configured to generate one or more shifted output signals that are shifted versions of its associated input signal and that include respective different time delay shifts or respective different phase shifts, wherein N is at least 2, wherein each time delay shift is at least zero, wherein each phase shift magnitude is at least zero, wherein one of said two received signals is made up of an at least one first signal and the other is made up of an at least one second signal transmitted to said apparatus from a transmit antenna in a common frequency channel, and wherein said two received signals are received with the same relative characteristics to each other as when transmitted, an adder configured to generate an adder output signal that is a function of the sum of the products of i) each of said shifted output signals with ii) a respective one of a plurality of weights associated with that shifted output signal, said weights being determined in such a way as to reduce interference in a particular type of signal said apparatus was designed to process, and at least one separator that retrieves at least one of said at least one first signal and said at least one second signal from said adder output signal.