A satellite receiver for wireless signals having carrier frequencies in the V or the W band of frequencies is described. The satellite receiver may receive the wireless signals at high elevation angles, such as greater than 62° . This high elevation angle may reduce losses, which may allow the satellite receiver to communicate at a data rate of at least 50 Mbps. In order to accommodate these system requirements, the one or more satellites that provide the wireless signals may have eccentric geosynchronous or near-geosynchronous orbits that are inclined relative to an equatorial plane of the Earth, such as an eccentricity between 0.12 and 0.3. Moreover, the one or more satellites may have ground tracks substantially along one or more continents, and may be in view of dense population regions in the one or more continents with a higher frequency than low-density population regions in the one or more continents.

A satellite receiver for wireless signals having carrier frequencies in the V or the W band of frequencies is described. The satellite receiver may receive the wireless signals at high elevation angles, such as greater than 62° . This high elevation angle may reduce losses, which may allow the satellite receiver to communicate at a data rate of at least 50 Mbps. In order to accommodate these system requirements, the one or more satellites that provide the wireless signals may have eccentric geosynchronous or near-geosynchronous orbits that are inclined relative to an equatorial plane of the Earth, such as an eccentricity between 0.12 and 0.3. Moreover, the one or more satellites may have ground tracks substantially along one or more continents, and may be in view of dense population regions in the one or more continents with a higher frequency than low-density population regions in the one or more continents.

A system and method for providing multi-input multi-output (MIMO) feeder links for a multibeam satellite system. The method includes configuring a X×Y MIMO antenna system using X-antennae having dominant line-of-sight (LoS) of Y-antennae; transmitting, simultaneously, a Tx signal as X Tx signals on a MIMO channel with the X-antennae; receiving the X Tx signals on the MIMO channel with the Y-antennae as Y Rx signals, wherein each of the Y-antennae generate one of the Y Rx signals; and ground-interference processing the X Tx signals or the Y Rx signals to recover the Tx signal; satellite-interference processing the X Tx signals or the Y Rx signals to recover the Tx signal. In the method, the ground interference processing includes countermeasures as either pre-interference processing when the X-antennae are disposed on a ground or post-interference processing when the X-antennae are disposed in a Geosynchronous orbit satellite. Gateway diversity for multiple MIMO feeder links utilizing these countermeasures improves weather-resiliency and significantly enhances overall satellite network availability.

A system and method for providing multi-input multi-output (MIMO) feeder links for a multibeam satellite system. The method includes configuring a X×Y MIMO antenna system using X-antennae having dominant line-of-sight (LoS) of Y-antennae; transmitting, simultaneously, a Tx signal as X Tx signals on a MIMO channel with the X-antennae; receiving the X Tx signals on the MIMO channel with the Y-antennae as Y Rx signals, wherein each of the Y-antennae generate one of the Y Rx signals; and ground-interference processing the X Tx signals or the Y Rx signals to recover the Tx signal; satellite-interference processing the X Tx signals or the Y Rx signals to recover the Tx signal. In the method, the ground interference processing includes countermeasures as either pre-interference processing when the X-antennae are disposed on a ground or post-interference processing when the X-antennae are disposed in a Geosynchronous orbit satellite. Gateway diversity for multiple MIMO feeder links utilizing these countermeasures improves weather-resiliency and significantly enhances overall satellite network availability.

Aspects of the disclosure relate to positioning, navigation, and timing (PNT) satellite beam and data scheduling. In one or more embodiments, a method for determining a location and/or time offset of at least one receiver involves transmitting, by at least one satellite, at least one beam, which is a sweeping beam. In one or more embodiments, each of the beams comprises at least one signal used for positioning, navigation, or timing. The method further comprises varying, by at least one satellite, aspects of at least one signal based on optimization parameters. In at least one embodiment, the optimization parameters comprise a location of a beam footprint of at least one beam. In one or more embodiments, at least one receiver receives at least one signal. In at least one embodiment, the location and/or the time offset of at least one receiver is determined by using at least one signal.

Aspects of the disclosure relate to positioning, navigation, and timing (PNT) satellite beam and data scheduling. In one or more embodiments, a method for determining a location and/or time offset of at least one receiver involves transmitting, by at least one satellite, at least one beam, which is a sweeping beam. In one or more embodiments, each of the beams comprises at least one signal used for positioning, navigation, or timing. The method further comprises varying, by at least one satellite, aspects of at least one signal based on optimization parameters. In at least one embodiment, the optimization parameters comprise a location of a beam footprint of at least one beam. In one or more embodiments, at least one receiver receives at least one signal. In at least one embodiment, the location and/or the time offset of at least one receiver is determined by using at least one signal.

Various arrangements for increasing a transfer rate of a data transfer via satellite are presented. A satellite gateway may set an accelerated set of communication parameters that control communication between the satellite gateway and the satellite terminal via the satellite and between the satellite gateway and the content source to an accelerated transfer rate between the content source and the satellite terminal. A first set of data may be transferred from the content source to the satellite terminal using the set of communication parameters. After transferring the first set of data, the satellite gateway may adjust the initial set of communication parameters to an adjusted set of communication parameters. The adjusted transfer rate can be lower than the accelerated transfer rate.

Various arrangements for increasing a transfer rate of a data transfer via satellite are presented. A satellite gateway may set an accelerated set of communication parameters that control communication between the satellite gateway and the satellite terminal via the satellite and between the satellite gateway and the content source to an accelerated transfer rate between the content source and the satellite terminal. A first set of data may be transferred from the content source to the satellite terminal using the set of communication parameters. After transferring the first set of data, the satellite gateway may adjust the initial set of communication parameters to an adjusted set of communication parameters. The adjusted transfer rate can be lower than the accelerated transfer rate.

A satellite communication system includes a first satellite in a geostationary orbit and a plurality of second satellites. Each of the second satellites is in a separate orbit with time-dependent projection on ground. The first satellite is adapted to communicate with one or more user terminals and to communicate with each of the plurality of second satellites via a respective inter-satellite communication link. Further, each of the second satellites is adapted to communicate with one or more feeder link stations. Also disclosed is a method of communicating in a satellite communication system.

A satellite communication system includes a first satellite in a geostationary orbit and a plurality of second satellites. Each of the second satellites is in a separate orbit with time-dependent projection on ground. The first satellite is adapted to communicate with one or more user terminals and to communicate with each of the plurality of second satellites via a respective inter-satellite communication link. Further, each of the second satellites is adapted to communicate with one or more feeder link stations. Also disclosed is a method of communicating in a satellite communication system.