Patent ID: 8532047

Claim:
A method in a user equipment (UE) for dual-antenna transmission of a subframe shared by a plurality of users using space-time coding, the method comprising: generating, at the UE, a first plurality of modulation symbols and a second plurality of modulation symbols to be transmitted on the subframe; generating, at the UE, a third plurality of modulation symbols and a fourth plurality of modulation symbols by performing Alamouti coding on each pair of modulation symbols in each of the first and second pluralities of modulation symbols; generating a spread matrix for each of the pluralities of modulation symbols such that each column of each spread matrix for the first and third pluralities of modulation symbols maps to a corresponding single carrier-frequency division multiple access (SC-FDMA) symbol of a first slot of the subframe, and each column of each spread matrix of the second and fourth pluralities of modulation symbols maps to a corresponding SC-FDMA symbol of a second slot of the subframe; and transmitting the subframe such that the first plurality of modulation symbols are transmitted on the first slot via a first antenna, the second plurality of modulation symbols are transmitted on the second slot via the first antenna, the third plurality of modulation symbols are transmitted on the first slot via the second antenna, and the fourth plurality of modulation symbols are transmitted on the second slot via the second antenna.