A transmitting apparatus and method may inverse Fourier transform transmit data converted to parallel form to obtain a first signal. The band of a second signal is limited to a guard frequency band adjacent to the band of the first signal, and a signal comprising the first and second signals is tran...http://www.google.fr/patents/US7012949?utm_source=gb-gplus-shareBrevet US7012949 - OFDM guard band communication apparatus and method
OFDM guard band communication apparatus and method