Patent ID: 7450662

Claim:
A method for transmitting at least one set of four symbols via at least three transmit antennas, the method comprising: selecting the set of the four symbols from a set of symbols wherein each symbol from the set of symbols takes values from a rotated constellation; encoding a set of four interleaved symbols corresponding to the set of four symbols, each interleaved symbol from the set of four interleaved symbols being created by combining a first part of one symbol with a second part of one other symbol, the symbol and the one other symbol forming part of the set of four symbols; and transmitting the set of four interleaved symbols using the at least three transmit antennas wherein two transmit antennas of the at least three transmit antennas transmit a combination of a first two interleaved symbols, a complex conjugate of the first two interleaved symbols and a negative complex conjugate of the first two interleaved symbols from the set of four interleaved symbols in a predetermined manner over a first transmission channel and a combination of a second two interleaved symbols, a complex conjugate of the second two interleaved symbols and a negative complex conjugate of the second two interleaved symbols from the set of four interleaved symbols in a predetermined manner over a second transmission channel such that each transmitter antenna of the at least three transmitter antenna transmitting an information about each symbol from the set of four symbols over two transmission channels, wherein the rotated constellation is obtained by rotating the constellation if a real or an imaginary part of one symbol of the constellation has a same real or an imaginary part as another symbol of the constellation.