Patent ID: 7599444
Filing Date: 2009-10-06
Classification: H04L

Abstract:
1. An apparatus for transmitting a sequence of messages via a MIMO channel, comprising: a MIMO transmitter having an array of antennas, being configured to select any codeword of a codebook, and being configured to select one of the codewords in response to receiving each message of the sequence, each codeword being a matrix; and wherein for each one of the selected codewords the transmitter is configured to transmit signals from the antennas in a series of time slots corresponding to the one of the selected codewords such that each antenna transmits one column of the one of the selected codewords and such that one row of the one of the selected codewords is transmitted in each of the time slots of the corresponding series; and wherein the transmitter is configured such that each of the codewords is a matrix U(λ|a