Patent ID: 7486739

Claim:
A method, comprising: constructing layered channel symbols as linear combinations of complex modulation symbols; transmitting the layered channel symbols via at least two transmit paths; using, when constructing the layered channel symbols, at least a first non-zero coefficient and a second non-zero coefficient in at least one layer when performing a linear combination, wherein a ratio of the first coefficient and the second coefficient is not a real number; using, for at least one modulation symbol, a first non-zero total power for transmission on a first transmit path of the at least two transmit paths, and a second non-zero total power for transmission on a second transmit path of the at least two transmit paths; and using, for at least another modulation symbol, the first non-zero total power for transmission on the second transmit path of the at least two transmit paths, and the second non-zero total power for transmission on the first transmit path of the at least two transmit paths, wherein the first and second non-zero total powers are not equal.