| 摘要 |
A method for operating a communicating station in order to transmit information through a communication medium using a set of channels, wherein the channels have 5 respective carrier frequencies, the method comprising: determining a list of one or more of the carrier frequencies over which transmissions are to be attenuated; encoding information bits according to an error correction code in order to obtain coded bits, wherein the coded bits represent the received information bits with redundancy; 10 interleaving the coded bits to obtain interleaved bits; mapping blocks of the interleaved bits to corresponding sets of complex numbers, wherein each set of complex numbers includes one complex number for each of the carrier frequencies; modifying each set of complex numbers by attenuating one or more of the complex 15 numbers in the set that correspond to the one or more carrier frequencies on the list, wherein said attenuating includes scaling the one or more complex numbers so that their amplitudes are less than a predetermined amplitude level; computing an inverse Fourier transform of each modified set of complex numbers to obtain a sequence of time-domain samples; and 20 transmitting a time-domain signal over the communication medium based on the sequence of time-domain samples. |
