Patent ID: 9559768
Date: 2017-01-31
CPC Classifications: H04B

Claim:
1. A digital wireless broadcast system, comprising: a plurality of ground stations respectively configured to wirelessly transmit a digital symbol stream over a frequency spectrum to corresponding plurality of service areas; and a satellite configured to wirelessly transmit the digital symbol stream over the frequency spectrum to the plurality of service areas, wherein the plurality of ground stations are configured such that the digital symbol stream from each ground station and the digital symbol stream from the satellite arrive within a predetermined time period of each other in each corresponding service area, wherein the predetermined time period is a relative delay between the digital symbol stream from the satellite and from the ground station that is within a range for which a receiver in the corresponding service area is capable of decoding the digital symbol stream, and wherein the plurality of ground stations are configured such that a timing of the digital symbol stream transmission from at least one ground station is independently controllable from a timing of the digital symbol stream transmission from at least one other ground station.