Patent ID: 8391383

Claim:
A method, comprising: (a) de-multiplexing a sequence of bits into M bit-streams, wherein each bit-stream has a length of Q; (b) mapping each Q-length bit-stream onto a constellation point in accordance with a 2 Q constellation pattern and determining K non-overlapping sets of L modulated symbols, wherein K and L are integers and M=KL; (c) applying an unitary transformation on the K non-overlapping sets of L modulated symbols to output K sets of L complex signals; and (d) mapping the K sets of L complex signals to K groups of L OFDM subcarriers, wherein subcarriers in at least some of the OFDM subcarrier groups are selected dynamically based on tone mapping information, wherein (a) to (d) are performed by a transmitter in a wireless OFDM system.