Patent ID: 8213293

Claim:
A method for transmitting a signal in a wireless mobile communication device operating in Single Carrier-Frequency Division Multiple Access (SC-FDMA) and Multiple-Input Multiple-Output (MIMO) with N transmit antennas, the method comprising: generating a sequence of second modulation symbols by Discrete Fourier Transform (DFT)-processing a sequence of first modulation symbols; generating a sequence of third modulation symbols for each transmit antenna by precoding the sequence of second modulation symbols independently for each transmit antenna; and transmitting a signal generated by Inverse Fast Fourier Transform (IFFT)-processing the sequence of third modulation symbols through a transmit antenna corresponding to the signal, wherein if the sequence of second modulation symbols are denoted by {x (1) , x (2) , . . . , x (k) , . . . , x (M) } and the sequence of third modulation symbols transmitted on an n th transmit antenna among N transmit antennas are denoted by {z (1) , z (2) , . . . , z (k) , . . . , z (M) }, the sequence of second modulation symbols and the sequence of third modulation symbols are in a relationship that z (k) =x (k) ·e jφ n ·e jθ · k where φ n and θ n are predetermined values, M is a number of subcarriers included in a transmission band of the signal, k is a location of a subcarrier to which x (k) and z (k) are mapped, and 1≦k≦M and 1≦n≦N are satisfied.