Patent ID: 8077793

Claim:
For use in an orthogonal frequency division multiplexing (OFDM) network capable of communicating with a plurality of subscriber stations in a coverage area of the OFDM network, a base station configured to transmit to a first subscriber station, using a first virtual antenna and a second virtual antenna, a first data stream and a second data stream, wherein the base station is configured to allocate first data symbols associated with the first data stream to be transmitted from the first virtual antenna in a first selected group of subbands of OFDM subcarriers and allocate second data symbols associated with the first data stream to be transmitted from the second virtual antenna in a second selected group of subbands of OFDM subcarriers different from the first selected group of subbands, wherein the base station further is configured to allocate third data symbols associated with the second stream to be transmitted from the first virtual antenna in a third selected group of subbands of OFDM subcarriers different from the first selected group of subbands.