Patent ID: 8842764
Filing Date: 2014-09-23
Classification: H04B,Y02D

Abstract:
1. A method of improving throughput conditions in a wireless communication network for a wireless multiple-input, multiple-output (MIMO) channel between a MIMO transmitter comprising an antenna array having a plurality of antennas and a MIMO receiver, the method comprising: determining that multiplicative noise limits the throughput conditions when the multiplicative noise is stronger than additive noise, said additive noise comprising at least one of a thermal noise and an interference at one or both of the MIMO transmitter and the MIMO receiver, and said multiplicative noise comprising any noise dependent on or proportional to a signal strength at one or both of the MIMO transmitter and the MIMO receiver; identifying a dominant signal path between the MIMO transmitter and the MIMO receiver; and determining a set of precoder weights for each of one or more data streams communicated between the MIMO transmitter and the MIMO receiver based on information derived from non-precoded feedback reference symbols to decrease the transmission power allocated to one or more of the data streams associated with the dominant signal path relative to the transmission power allocated to one or more of the data streams associated with a non-dominant signal path.