Patent ID: 7620117

Claim:
A method for encoding a space time block code in a transmitter employing a plurality of transmit antennas, the method comprising the steps of: if a signal to be transmitted is input, pre-encoding the transmit signal according to a preset pre-encoding matrix; space-time mapping the pre-encoded signal according to a number of transmit antennas to employ a preset space time block coding scheme; and transmitting the space-time mapped signal through the transmit antennas by applying the preset space time block coding scheme to the space-time mapped signal, wherein the pre-encoded signal is divided according to a plurality of transmit antenna groups into which the transmit antennas are classified, and wherein the preset pre-encoding matrix is generated by: generating a Vandermonde matrix corresponding to the number of transmit antennas, puncturing selected sequential columns of the Vandermonde matrix, and shifting predetermined rows of the punctured Vandermonde matrix.