Patent ID: 9124360
Filing Date: 2015-09-01
Classification: H04B

Abstract:
1. A method to operate a communication system, comprising: dividing signal dimensions at a receiver into interference and intended signal dimensions; applying transmit precoding to mitigate interference by overlapping the interference from a plurality of transmitters into the interference dimension at a receiver; applying a receiver filter to cancel the interference dimension at the receiver and recover the signal in the intended signal dimension; grouping communication channels into interfering networks and intended data networks; determining degrees of freedom (DoF) per communication node where at a transmitting node the DoF is the number of independent dimensions for the transmission and at each receiver node the DoF is the number of independent dimensions for receiving data signals; separately dealing with interference in the network from communication in the intended data network through successive application of interference removal over partial interference network, and performing interference alignment in a cellular network and minimizing interference in single or multiple cells.