Patent ID: 9054768
Filing Date: 2015-06-09
Classification: H04B,H04L

Abstract:
1. A method for use in an adaptive filter, the method comprising: a) generating, for an input signal, one or more shifted output signals, the shifted output signals including respective time delay shifts or respective phase shifts, each time delay shift being at least zero, each phase shift magnitude being at least zero, the input signal being derived from K received signals that were each transmitted separately from a different one of K transmit antennas at a common transmitter end, each of the K transmitted signals having been formed by transmitting a different representation of a common signal in a common frequency channel, the common signal being made up of an at least one first signal and an at least one second signal, the K transmitted signals being other than spread spectrum signals, wherein K is at least 2, and b) generating an adder output signal that is a function of the sum of the products of i) each of the shifted output signals with ii) a respective one of a plurality of weights associated with that shifted output signal, the plurality of weights being determined in such a way as to reduce interference in a particular type of signal that the adaptive filter was designed to process.