Patent ID: 7536168

Claim:
A method for transmitting data bits between at least one subscriber station and a transmitter in a radio communication system, comprising: transmitting each data bit from a transmitter on at least two different units of a first radio resource; and spreading the data bits at the transmitter for every unit of the first radio resource, such that every data bit is multiplied by a respective code matrix from a group of code matrices, the group being the same for the units of the first radio resource, wherein the lines of the code matrices respectively represent a spreading code relating to a second radio resource and the columns of the code matrices respectively represent a spreading code relating to a third radio resource, there are at least first and second groups of code matrices used for spreading, each group containing the same number of code matrices, for every group of code matrices the sum of the autocorrelations of all code matrices is not equal to zero only in the case of vanishing two-dimensional displacement, within the first and second groups, each matrix is numbered, each matrix in the first group has a matrix in the second group to which it is paired, the paired matrices corresponding based on matrix numbering, for each pair of groups, the sum of cross-correlations of all matrices that correspond due to their numbering is equal to zero for vanishing and non-vanishing two-dimensional displacement, and every data bit is transmitted on the at least two different units of the first radio resource, in combination with a plurality of units of the second radio resource defined by the spreading and with a plurality of units of the third radio resource defined by the spreading.