Patent ID: 8295373

Claim:
An apparatus for orthogonal frequency division multiplexing (OFDM) communication, the apparatus comprising: a transmitter to transmit signals; and a baseband processing block coupled to the transmitter and configured to encode input data for transmission on an OFDM signal with first and second logical subcarriers of a virtual carrier, map the first and second logical subcarriers to first and second physical subcarriers, and control the transmitter to transmit the OFDM signal with the encoded input data on the first and second physical subcarriers; wherein the first and second physical subcarriers respectively correspond to first and second physical carriers that have adjacent frequency bands and the virtual carrier includes a first plurality of logical subcarriers, the first physical carrier includes a second plurality of physical subcarriers, and the second physical carrier includes a third plurality of physical subcarriers, wherein the first plurality is greater than the second plurality, and the first plurality is greater than the third plurality.