Patent ID: 8358611

Claim:
A method of transmitting multiple codewords in a wireless communication system using a plurality of transmission antennas, the method comprising: generating a plurality of parallel codewords by encoding a plurality of parallel information bit streams; generating a plurality of parallel modulated symbol streams by modulating the plurality of parallel codewords; generating a plurality of frequency domain symbol streams by performing Discrete Fourier Transform (DFT) on the modulated symbol streams; precoding the plurality of frequency domain symbol streams; mapping the precoded frequency domain symbol streams onto resource elements; generating Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols by performing Inverse Fast Fourier Transform (IFFT) on the plurality of frequency domain symbol streams; performing shifting that changes layers to which the plurality of parallel codewords, the plurality of parallel modulated symbol streams, or the plurality of frequency domain symbol streams is mapped at a predetermined time interval; and transmitting the SC-FDMA symbols.