Terrestrial beamforming communication using mutually synchronized spatial multiplexing feeder links

摘要

Embodiments provide terrestrial beamforming using a mutually synchronous spatial multiplexing gateway in a wireless communication system. Some embodiments are directed to a satellite having a focused beam feeder antenna communicating with a number of geographically dispersed gateway terminals (eg, a single gateway / beam) and a user antenna communicating with the user terminal via a formed user beam. Works in situations. The gateway terminal may communicate beam weighted and cross-phase synchronized feeder signals (eg, according to satellite and / or loopback beacons). For example, synchronization allows the forward uplink signal to be phase-locked received by the satellite, and beam weighting allows the forward downlink signal to be spatially combined to form a forward user beam. Embodiments can achieve large-scale bandwidth reuse by mutual synchronous spatial multiplexing of feeder link communications. [Selection diagram] Fig. 1