A system for the transmission of digital data elements corresponding to at least one application each comprising at least one stream of data elements, the data elements being constituted by digital elements distributed in the time-frequency space and transmitted in the form of symbols constituted by...http://www.google.com/patents/US5315584?utm_source=gb-gplus-sharePatent US5315584 - System of data transmission by sharing in the time-frequency space with channel organization
