A system and method for compensating for attenuation of carrier power by a transmission path. The method includes defining a path from a gateway to a measurement tap, where the path may include an output port of the gateway and path components used to reach the measurement tap; sweeping, in bands, an RF spectrum served by the RFT by sending a signal at a respective band and a band power from the output port over the path; measuring, at the measurement tap, a power metric for each of the bands; capturing, for each of the bands, power level (PL) data including a frequency start of the respective band, a frequency end of the respective band, the respective band power and the respective power metric at the measurement tap; and setting a carrier power level (CPL) of a carrier having a frequency start and a frequency end, where the CPL is based on the PL data associated with one more of the bands included in the frequency start and the frequency end, where the path components may include one or more connecting cables, one or more switches, and one or more equipment in the path.

Various arrangements for performing transmodulation of a forward feeder link are presented. A first data stream and a second data stream can be modulated into a higher-order modulation forward feeder link having a higher-order digital modulation scheme. A satellite can receive the higher-order modulation forward feeder link. The satellite can demodulate the higher-order modulator forward feeder link into a bit stream. This bit stream may then be remodulated and retransmitted as multiple forward user links.

Systems and methods for ACM trajectory include receiving data at a communications receiver; decoding the received data based on a selected MODCOD; monitoring a number of iterations used to decode the data using the selected MODCOD; comparing the number of iterations used to decode the data using the first selected MODCOD to a reference number of iterations; and adjusting a SNR threshold value for the selected MODCOD where the number of iterations used to decode the data using the first selected MODCOD is greater than the reference number of iterations.

A satellite transmitter includes K transmission antenna elements, a multiplexing unit configured to multiplex each of K digital signals on a frequency axis and then convert the multiplexed digital signals to time-domain digital signals, a digital-to-analog converter, a PAPR calculation unit configured to calculate a PAPR for each of the K digital signals, a beam-to-beam relative phase calculation unit configured to calculate a beam-to-beam relative phase for suppressing a peak power of the transmission antenna elements, an excitation coefficient calculation unit configured to calculate K updated excitation coefficients based on the beam-to-beam relative phase and the beam-formation excitation coefficient, and an excitation coefficient multiplication unit configured to generate the digital signals of a frequency domain to be output to the multiplexing unit by multiplying a received relay signal by each of the K updated excitation coefficients in the frequency domain.

Systems and methods for controlling uplink power in a non-terrestrial network (NTN). An NTN station transmits a reference signal at a first time having a defined transmission power and the reference signal is received by non-terrestrial user equipment. The user equipment evaluates the reference signal and determines a first downlink loss of the reference signal by calculating a difference between a measured power level of the received reference signal and the defined transmission power. The NTN station transmits a communication signal at a second time and is received by the user equipment, which estimates a second downlink loss of the communication signal based on the first downlink loss and a power level of the communication signal. A first uplink loss is estimated based on the second downlink loss, and the user equipment adjusts a transmission power of its transmitter based on the first uplink loss.

A system and method for managing a transmit power of a terminal includes dividing a spectrum into frequency bins and an inroute layout including inroutes; mapping at least one of the frequency bins with each of the inroute; determining a respective normalized Transmit Power (TP) for each of the frequency bins; calculating a transmission TP based on the respective normalized TP of one or more of the frequency bins mapped to a selected inroute; and transmitting a radio signal with the transmission TP on the selected inroute. A first frequency bin is adjacent a second frequency bin, a respective normalized TP of the first frequency bin compared to a respective normalized TP of the second frequency bin varies no more than a threshold power delta, a count of frequency bins is greater than one and unequal to a count of the inroute layout.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node associated with a non-terrestrial network, an indication of one or more model parameters that indicate one or more of a time correction or a frequency correction. The UE may transmit, to the network node, an uplink transmission based at least in part on the one or more model parameters. Numerous other aspects are described.

A hybrid satellite communication system in which a hub station transmits signals to remote stations through a satellite at a relatively low frequency unaffected by weather effects and in which the remote stations transmit signals to the hub station at a relatively higher frequency which enables use of more economical equipment at remote stations. The hub station senses signal quality or strength received from each remote station and transmits power control signals to remote stations with poor signal strengths to cause such remote stations to increase output power to overcome weather effects. The power control signals are transmitted on the lower frequency to prevent the power control signals from being masked by the weather effects. A communications satellite can the either geostationary or low Earth orbit (LEO). Data can also be transmitted on the relatively low frequency. The communication system can utilize antennae with dish, array and other suitable configurations.

A transmitting station includes an amplifier unit that amplifies a transmitting signal, a transmitting antenna that wirelessly transmits the transmitting signal that has been amplified, and a controller unit that regulates a frequency of the transmitting signal and an input power to the amplifier unit on the basis of an estimation value of reception quality that is a signal quality when the transmitting signal is received by a receiving station.

There is provided a system including: a control device mounted on an aircraft and configured to control the aircraft, the aircraft having a battery, and a wireless device configured to use power stored in the battery to provide a wireless communication service to a user terminal; and a module that is physically attachable to and detachable from the control device, in which the control device has a housing that includes a module attachment and detachment unit, and an electrical connection unit configured to electrically connect the module to the battery when the module is attached to the module attachment and detachment unit, and the module has, a power receiving unit configured to receive power from the battery, and a communication processing unit configured to use the power received by the power receiving unit to communicate with the wireless device.