Methods for controlling orthogonal frequency division multiple access (OFDMA) communications over satellite links. The methods include estimating a differential delay in a satellite spotbeam between a mean propagation delay in the spotbeam and a propagation delay between a user terminal in the spotbeam...http://www.google.fr/patents/US8169955?utm_source=gb-gplus-shareBrevet US8169955 - Systems and methods for orthogonal frequency division multiple access (OFDMA) communications over satellite links
Systems and methods for orthogonal frequency division multiple access (OFDMA ...