Patent ID: 7957701
Filing Date: 2011-06-07
Classification: H04B,H04L

Abstract:
1. A method implemented in a base station having a plurality of antennas, comprising: associating at least one user with at least one first code word selected from at least one first code book wherein associating said at least one user with said at least one first codeword selected from said at least one first codebook comprises: receiving feedback from at least one user in response to transmitting a first frame to said at least one user, the first frame formed by pre-coding at least one symbol using at least one first code word selected from at least one first code book associated with said at least one user; and transmitting at least one second frame to said at least one user, said at least one second frame being pre-coded using at least one second codeword selected from at least one second codebook, said at least one second codebook being determined based on the feedback and said at least one first codeword.