Patent ID: 9059770
Filing Date: 2015-06-16
Classification: H04B,H04L,H04W

Abstract:
1. A system for cancelling spatial interference associated with an original multi-carrier signal carrying at least one data transmission sent by a transmitter to an antenna array comprising a plurality of antennae and having a receiver operatively associated therewith, the system receiving a plurality of received signals respectively including the interference and the original signal as received by a respective individual antenna from among the plurality of antennae, the system comprising: a spatial nulling device for generating a cleaner signal by reducing at least one spatial component of said interference; and a signal manipulator operative to manipulate a derivative of said received signals so as to cause said at least one data transmission to be more concentrated in a subset of frequency bands in which the spatial nulling device is more effective and to be less concentrated in frequency bands which do not belong to said subset of frequency bands, wherein said signal manipulator comprises an array of programmable band limited noise injectors including a plurality of programmable band limited noise injectors corresponding in number to said plurality of antennae, wherein each noise injector adds noise to the signal received from the antenna corresponding to the noise injector, such that noise is added only to frequency bands outside the subset and not to frequency bands inside the subset.