Ground Terminals via Remote Digital-Beam-Forming Networks for Satellites in Non-Geostationary Orbit

A communication system comprising:

• a first remote digital beam-forming network configured to receive a first set of input signals destined for a first set of user devices and generate a first output signal including first element signals to be radiated by a first set of remote antenna array elements;
• a second remote digital beam-forming network configured to receive a second set of input signals destined for a second set of user devices and generate a second output signal comprising second element signals to be radiated by a second set of remote antenna array elements;
• a pre-processor configured to perform a wavefront multiplexing transform on signal waveforms including the first output signal and the second output signal and generate wavefront multiplexed signals;
• an optical line terminal coupled to the pre-processor, configured to process the wavefront multiplexed signal streams to generate optical waveform streams;
• and
• optical fibers coupling the optical line terminal to a set of optical network units.