Patent ID: 8149945

Claim:
A transmitter transmitting information symbols for use in a MIMO (Multiple Input Multiple Output) system, comprising: a space-time encoder for encoding data symbols input using a space-time code; and a number of transmit antennas for transmitting the encoded data symbols to a receiver, wherein a codeword matrix for transmitting sets of symbols of the number of transmit antennas when multiplied by a spatial multiplexing rate in one coding block, is a square matrix with a dimension equal to the number of the transmit antennas; wherein a row of the codeword matrix represents combined signals transmitted by each transmit antenna, and a column of the codeword matrix represents timeslots of the number of the transmit antennas; wherein data symbols are transmitted through a number of the rows of the codeword matrix determined based on a number of the spatial multiplexing rate, in each column of the codeword matrix; and wherein the symbols of the number of the transmit antennas are combined by way of utilizing complex weights, in each row of the codeword matrix.