System and method for increasing spot beam satellite bandwidth

摘要

A device and method for demodulation of multiple received signals is provided. The device can have a receiver configured to receive a composite signal having two or more constituent signals overlapped in frequency. The device can have one or more processors configured to determine a at least one modulation type and at least one symbol rate corresponding to the two or more constituent signals. The one or more processors can further resample the composite signal at a sampling rate that is a multiple of the at least one symbol rate to determine the characteristics of the two or more constituent signals. The one or more processors can separate and output the two or more constituent signals using the determined characteristics.

主权项

1. An apparatus for demodulation of multiple received signals, comprising:
a receiver configured to receive a composite signal, the composite signal having a first signal and a second signal, the first signal overlapping the second signal; and at least one processor configured to: exponentiate the composite signal n-times until a first power of n yields a first continuous wave corresponding to the first signal, and a second power of n yields a second continuous wave corresponding to the second signal, the first power of n corresponding to a modulation estimate for the first signal, and the second power of n corresponding to a modulation estimate for the second signal, n being an integer greater than zero; derive at least one symbol rate corresponding to the first signal based on the first power of n and the second power of n; resample the composite signal based on the modulation estimate at x-times the at least one symbol rate to determine at least one symbol trajectory, at least one modulation type, and offset information between the first signal and the second signal, x being an integer greater than zero; regenerate the first signal and the second signal based on the at least one modulation type, the at least one symbol trajectory, and offset information; and output the first signal and the second signal.