Abstract: Described herein are systems, methods, and other techniques for canceling an interferer signal from a received signal in a satellite communication system. A signal cancellation function is instantiated at a compute infrastructure. A received signal is digitized to produce a digital waveform of the received signal. A virtualized demodulation is performed on the digital waveform of the received signal to produce a bit sequence of the interferer signal. A virtualized modulation is performed on the bit sequence of the interferer signal to produce a digital waveform of the interferer signal. The digital waveform of the received signal is delayed based on one or more delay factors to produce a delayed digital waveform of the received signal. The digital waveform of the interferer signal is subtracted from the delayed digital waveform of the received signal to produce an output digital waveform.

Abstract: Described herein are systems, methods, and other techniques for scaling a satellite communication system. A gateway includes a compute infrastructure running a traffic adapter, a first virtual transmitter, and a first virtual receiver. The first virtual transmitter modulates signals for transmission to a first remote terminal. The first virtual receiver demodulates signals received from the first remote terminal. The traffic adapter transmits first outbound baseband frames to the first virtual transmitter and receives first inbound baseband frames from the first virtual receiver. A request is received to add a second remote terminal to the satellite communication system. A second virtual receiver is instantiated at the compute infrastructure to demodulate signals received from the second remote terminal. The traffic adapter is reconfigured to receive second inbound baseband frames from the second virtual receiver.

Abstract: Described herein is a digitizer for use at a ground station or a remote terminal of a satellite communication system. The digitizer includes a radio interface having a DAC for converting an outbound digital waveform into an outbound analog signal and an ADC for converting an inbound analog signal into an inbound digital waveform. The digitizer also includes a configurable logic device coupled with the radio interface. The configurable logic device is configured to generate first and second streams of digital IF packets containing portions of the inbound digital waveform within first and second frequency bands. The configurable logic device is also configured to send the first and second streams of digital IF packets to first and second VNFs for processing in accordance with first and second applications.

Abstract: Conventionally, software-based services that utilize satellites are manually and painstakingly configured, provisioned, activated, and calibrated, because the complexity and variability of satellite links prevent automated and scalable service orchestration. Accordingly, systems and processes are disclosed for automated and scalable orchestration of services that utilize satellite links. In response to a service request, comprising a service definition for an end-to-end service, parameter(s) of a satellite link that satisfies the service definition may be calculated. These parameter(s) may be used to select a configuration for a satellite-network service chain, comprising a plurality of virtual network functions, from a service catalog. The satellite-network service chain may then be instantiated, within a cloud infrastructure, using the selected configuration.

Abstract: Conventionally, software-based services that utilize satellites are manually and painstakingly configured, provisioned, activated, and calibrated, because the complexity and variability of satellite links prevent automated and scalable service orchestration. Accordingly, systems and processes are disclosed for automated and scalable orchestration of services that utilize satellite links. In response to a service request, comprising a service definition for an end-to-end service, parameter(s) of a satellite link that satisfies the service definition may be calculated. These parameter(s) may be used to select a configuration for a satellite-network service chain, comprising a plurality of virtual network functions, from a service catalog. The satellite-network service chain may then be instantiated, within a cloud infrastructure, using the selected configuration.

Abstract: Software-based orchestration of communication payloads in satellites. In an embodiment, a payload model of a satellite payload, defined in a data modeling language (e.g., YANG) and representing a configuration for the satellite payload, is received. The configuration specifies a setting for at least one component of the satellite payload. The payload model is translated into one or more satellite commands for configuring the satellite payload according to the configuration represented in the payload model, and the satellite payload is reconfigured using the satellite command(s).

Abstract: Software-based orchestration of communication payloads in satellites. In an embodiment, a payload model of a satellite payload, defined in a data modeling language (e.g., YANG) and representing a configuration for the satellite payload, is received. The configuration specifies a setting for at least one component of the satellite payload. The payload model is translated into one or more satellite commands for configuring the satellite payload according to the configuration represented in the payload model, and the satellite payload is reconfigured using the satellite command(s).

Abstract: Systems, devices, and methods for satellite communications are disclosed. The devices and methods can be used for communications diversity in a system having multiple radio frequency terminals (RFTs). In a transmit chain, each RFT can be associated with an antenna for the transmission of signals to a satellite. The system can select one or more uplinks for transmission of one or more versions of a transmit signal via associated antennas. The one or more versions can have a piggyback signal associated with and phase locked to a symbol rate of the transmit signal. In a receive chain, phase differences between the piggyback signals can allow adjustment of one or more time delays in the transmit chain to provide improved signal to noise ratio of the received versions of the transmit signal in the receive chain.

Abstract: Systems, devices, and methods for satellite communications are disclosed. The devices and methods can be used for communications diversity in a system having multiple radio frequency terminals (RFTs). In a transmit chain, each RFT can be associated with an antenna for the transmission of signals to a satellite. The system can select one or more uplinks for transmission of one or more versions of a transmit signal via associated antennas. The one or more versions can have a piggyback signal associated with and phase locked to a symbol rate of the transmit signal. In a receive chain, phase differences between the piggyback signals can allow adjustment of one or more time delays in the transmit chain to provide improved signal to noise ratio of the received versions of the transmit signal in the receive chain.

Abstract: Systems and methods for satellite communications are disclosed. Embodiments of the system can have multiple radio frequency terminals (RFTs), each associated with an antenna. The system can use digital intermediate frequency (IF) versions of analog signals for transmission to a remote ground station via a satellite. Digital IF can allow rapid and efficient switching of signals between connected RFTs in order to select RFT and an antenna pairs having the least interference or highest signal quality. A downlink signal combining unit can use receive diversity from multiple RFTs to determine receive signal quality at each antenna. Signal quality information can be shared with an uplink selector to selectively transmit signals via one or more antennas having the highest signal quality for transmit power management.

Abstract: The disclosure provides systems and methods for interference reduction in wireless communications. The method can include receiving a composite signal having multiple overlapping constituent signals and a noise floor. The noise floor can have at least one interfering coherent signal. The system can characterize and synthesize the multiple overlapping constituent signals without a priori know. The method can include receiving a secondary input comprising the at least one interfering coherent signal. The method can include canceling the interfering coherent signal from the noise floor. The method can include outputting the first signal and the second signal having a reduced noise floor.

Abstract: The disclosure provides systems and methods for interference reduction in wireless communications. The method can include receiving a composite signal having multiple overlapping constituent signals and a noise floor. The noise floor can have at least one interfering coherent signal. The system can characterize and synthesize the multiple overlapping constituent signals without a priori know. The method can include receiving a secondary input comprising the at least one interfering coherent signal. The method can include canceling the interfering coherent signal from the noise floor. The method can include outputting the first signal and the second signal having a reduced noise floor.

Abstract: 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.

Abstract: Reducing interference on an input signal which includes a desired signal and an interfering signal, including: processing the input signal in frequency and time domain to separate the desired signal from the interfering signal by: characterizing the interfering signal without a priori knowledge of characteristics of the interfering signal; generating a clean copy of a carrier of the input signal using the characterized interfering signal; inverting the clean copy of the carrier and correcting for gain and phase; and summing the inverted clean copy of the carrier with the input signal to generate an output signal which is substantially close to the desired signal, wherein the generated output signal has adequate signal-to-noise ratio (SNR) so that it can be processed.

Abstract: 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.