Patent ID: 8730788
Filing Date: 2014-05-20
Classification: H04B,H04L

Abstract:
1. A method performed in a transmitter side of a multiuser minimum square error linear precoding MIMO system that comprises a transmitter with a plurality of transmit antennae and a plurality of receivers, each receiver of the plurality of receivers comprising a plurality of receive antennae, the method comprising: obtaining, for some or all of the plurality of receivers, receiver channel information quantifying properties of transmit channels between the plurality of receive antennae of the respective receiver and the plurality of transmit antennae of the transmitter; establishing in the transmitter an order for determining the receiver combining vectors of the some or all of the plurality of receivers by selecting as a next receiver in the order the so far unselected receiver that minimally increases a mean square data transmission error, based on the receiver channel information of any receivers previously selected in the order and of unselected receivers; wherein a number of receivers are placed in the order before receiver combining vectors that are to be used in the number of receivers are determined, and wherein prior to determining the order, determining for each receiver a preliminary receiver combining vector c  wherein ĉ