Patent ID: 8155232

Claim:
A method for data transmission, the method comprising: modulating data to be transmitted into a plurality of modulated symbols; dividing the plurality of modulated symbols into a plurality of subsets of modulated symbols, with each subset having N modulated symbols, and N being an integer no smaller than 2; encoding each subset of modulated symbols in accordance with a transmission diversity scheme to produce a plurality of N by N matrices, with each N by N matrix corresponding to each subset of modulated symbols; orthogonally spreading the plurality of N by N matrices to generate an output matrix, the orthogonal spreading of the plurality of N by N matrices being performed according to a Fourier matrix, and each element of the Fourier matrix being established by: P mn = ⅇ j2π ⁢ m N ⁢ ( n + 2 G ) where m, n=0, 1, . . . (N−1), G is the total number of matrices generated, m is the row number of the matrix, n is the column number of the matrix, and g is selected to be any number between 0 and G−1; and transmitting the symbols in the output matrix via a plurality of antennas.