FEEDER LINK CONFIGURATIONS TO SUPPORT LAYERED MODULATION

摘要

Systems and methods are disclosed for feeder link configurations to layered modulation. One feeder link system (13A) employs feeder link spot beam to antennas in distinct coverage areas to enable frequency reuse. In this system 1300, the uplink signals (116) comprise two distinct feeder link signals (1302A, 1302B). Feeder link spot beam antennas (1304A, 1304B) can be employed on the satellite (108) to reuse feeder link spectrum in order to not exceed bandwidth of the layered modulation on the downlink. The feeder link system (1300) includes a first feeder link antenna (1306A) and a second feeder link antenna (1306B) transmitting the first link signal at first frequency and the second link signal at second frequency respectively. Although the two feeder link frequencies are in substantially the same frequency band, the use of spot beam antennas (1304, 1304B) with distinct coverage areas (1308A, 1308B) prevents the first and second feeder link signals (1304A, 1304B) from interfering.