Patent ID: 8054742

Claim:
A method for transmitting an information symbol having a plurality of information sub-carriers and a plurality of active interference cancellation (AIC) sub-carriers, the method comprising: generating AIC sub-carrier data based on information to be transmitted; populating the plurality of information sub-carriers with the information; populating the plurality of AIC sub-carriers with the AIC sub-carrier data; applying baseband processing to the information symbol, thereby producing a processed symbol, wherein applying baseband processing to the OFDM symbol comprises: interpolating the OFDM symbol; computing a (R 1 N FFT )-point inverse Fourier transform of the OFDM symbol; and computing a (R 2 N FFT )-point Fourier transform of the OFDM symbol, where R 1 and R 2 are integer values, with R 2 ≧R 1 , and N FFT is the length of the inverse Fourier and Fourier transforms; and transmitting the processed symbol.