Patent ID: 7675988
Filing Date: 2010-03-09
Classification: H04B,H04L,H04W

Abstract:
1. An apparatus for performing beamforming in a base station using a multi-antenna scheme, the apparatus comprising: a general signal processor for multiplexing one bit steam into a plurality of bit streams, and performing Adaptive Modulation and Coding (AMC) on each of the plurality of bit streams; and a spatial signal processor for allocating weights to a plurality of transmission antennas of the base station depending on weight selection information being fed back from a mobile station, multiplying the plurality of bit streams by weights allocated to corresponding transmission antennas, respectively, and outputting the plurality of bit streams multiplied by the weights to the corresponding transmission antennas in each of a plurality of transmission antenna groups; and a feedback information processor for separately calculating weights for the plurality of transmission antenna groups depending on the weight selection information k being fed back from the mobile station, by: wherein w wherein the weight selection information includes weights of the plurality of transmission antennas groups, wherein the plurality of transmission antennas is classified into the plurality of transmission antenna groups, and wherein all of the antennas within each antenna group are allocated the same weight.