Patent ID: 9001924
Filing Date: 2015-04-07
Classification: G06F,H04B

Abstract:
1. An apparatus in a MIMO (Multiple Input Multiple Output) communication system, comprising: a memory; one or more processor, wherein the one or more processor coupled to the memory and wherein the one or more processor includes: a matrix inversion module coupled to receive matrix information and to provide an approximation of an inversion of the matrix information; wherein the matrix inversion module comprises: a decomposition block coupled to receive the matrix information and to decompose the matrix information into diagonal matrix information and off diagonal matrix information; and an expansion block coupled to receive the diagonal matrix information and the off diagonal matrix information and to invert a matrix sum of the diagonal matrix information and the off diagonal matrix information by generation of a portion of a series expansion; wherein the portion of the series expansion is a portion of a Neumann series expansion for a finite number of k terms, for k equal to or greater than 2; and wherein the approximation of the inversion of the matrix information is provided by the portion of the Neumann series expansion for the k terms, wherein, the portion of the Neumann series expansion is for the k terms and is mathematically expressed as: where A represents the matrix information, D represents the diagonal matrix information, and E represents the off diagonal matrix information.