Patent ID: 7715805
Filing Date: 2010-05-11
Classification: H04B,H04L

Abstract:
1. A method for transmitting data in a telecommunication system including at least one transmitter each provided with at least two transmitting antennas and at least one receiver each provided with at least one receiving antenna, the method comprising: producing, at the at least one transmitter, symbols configured to be transmitted over communication channels established between the at least two transmitting antennas and the at least one receiving antenna; and spreading components of a predetermined number of successive symbols of the produced symbols over time at the at least one transmitter before transmitting the spread components over said communication channels, wherein the spreading step comprises computing a plurality of linear combinations of components of a vector representative of said successive symbols having each a number of components equal to a number of the at least two transmitting antennas, said plurality of linear combinations configured to be transmitted by the at least two transmitting antennas over a number of time chips equal to the predetermined number of successive symbols, the plurality of linear combinations being obtained by multiplying a vector formed by a concatenation of components of each of said successive symbols, with a predefined spreading matrix, the spreading matrix being constructed such that each of its rows is formed by at least one vector including a plurality of successive chunks each having a size corresponding to the number of the at least two transmitting antennas, all of the successive chunks of any given row having all the same norm.