Patent ID: 8724743
Filing Date: 2014-05-13
Classification: H04L

Abstract:
1. An apparatus for calculating receive parameters for an MIMO system comprising a plurality of individual transmission sections, a transmission section comprising a transmit circuit being adjustable by a transmit parameter, and a plurality of individual users, a user comprising a receive circuit being adjustable by a receive parameter, comprising: a calculator comprising hardware for calculating a receive parameter for a first selected data stream for a first user of the plurality of users using a channel information for a transmission channel between the user and a first individual transmission section, to which the user is associated, and for calculating a receive parameter for a second selected data stream for a second user of the plurality of users associated with a second individual transmission section, the second individual transmission section being different from the first individual transmission section, using a channel information between the first user and the second individual transmission section, to which the second user is associated with, wherein an interference caused by a transmission of an individual transmission section at a user in a different transmission section is reduced or eliminated, wherein the calculator is configured for calculating a projector matrix depending on a channel information between the first user and the second individual transmission section, or the receive parameter for the first user, and for using the projector matrix together with the channel information between each user and its associated individual transmission section, for calculating the receive parameter for the second user, and wherein the calculator is configured for calculating the projector matrix based on the following equation: wherein s indicates an individual transmission section from the plurality of individual transmission sections S, P