A signal transmitting apparatus using orthogonal frequency division multiplexing includes an inverse fast Fourier transform circuit for converting a digital information signal into a first multi-value QAM modulation signal. A guard interval setting circuit is operative for periodically...http://www.google.fr/patents/US5732068?utm_source=gb-gplus-shareBrevet US5732068 - Signal transmitting apparatus and signal receiving apparatus using orthogonal frequency division multiplexing
Signal transmitting apparatus and signal receiving apparatus using ...
