Patent ID: 6064658
Filing Date: 2000-05-16
Classification: H04B,H04H

Abstract:
A method for providing digital broadcast communications in a mobile user environment comprising:creating multiple digital versions of a source signal having differing levels of quality, each of the digital versions including frames of digital data, said multiple versions differing in quality by one of the group selected from transmitting the digital versions at different bit rates, transmitting the digital versions at different amplitude resolutions determined by the number of bits per frame, and transmitting the digital versions at differing sampling periods;intentionally delaying in time the transmission of the multiple digital versions of the source signal relative to each other prior to transmission so as to decorrelate the signal propagation effects experienced by each signal's transmission to a mobile receiver based on selected predetermined criteria; andreceiving at the mobile receiver the multiple time-separated digital versions of the source signals and using such versions to produce a continuous output signal that represents the source signal at a predetermined level of quality.