Abstract: Provided herein are various improvements to laser communication ranging. In one example, a method includes combining a ranging signal with data communications into an optical transmission for receipt by a communication node, and obtaining an additional optical transmission transferred by the communication node comprising additional data communications combined with a retransmitted version of the ranging signal. The method includes determining an indication of a range to the communication node based at least on a comparison between properties of the ranging signal and properties of the retransmitted version of the ranging signal after separation from the additional data communications.

Abstract: Provided herein are various improvements to laser communication ranging. In one example, a method includes combining a ranging signal with data communications into an optical transmission for receipt by a communication node, and obtaining an additional optical transmission transferred by the communication node comprising additional data communications combined with a retransmitted version of the ranging signal. The method includes determining an indication of a range to the communication node based at least on a comparison between properties of the ranging signal and properties of the retransmitted version of the ranging signal after separation from the additional data communications.

Abstract: Provided herein are various improvements to laser communication ranging. In one example, a method includes converting a ranging signal in a radio frequency (RF) format into an optical format and combining the ranging signal in the optical format with data communications into an optical transmission for receipt by a communication node. The method also includes receiving from the communication node an additional optical transmission comprising additional data communications combined with a retransmitted version of the ranging signal, and determining an indication of a range to the communication node based at least on properties of the retransmitted version of the ranging signal.

Abstract: An apparatus for high-power combining includes multiple power-combining building blocks, a passive input network to couple one or more input signals to one or more input ports of the multiple power-combining building blocks, and a passive output network to couple to output ports of the multiple power-combining building blocks and to generate one or more amplified output signals. Each power-combining building block includes M high-power amplifiers (HPAs) coupled in parallel to a respective passive input network and a respective passive output network. A count of the multiple power-combining building blocks is determined based on a desired total number N of the HPAs and a number M of the HPAs in each power-combining building block.

Abstract: A method for carrier frequency assignment to users includes receiving, by a service provider scheduler, a service request from a user. The method further includes receiving, by the service provider scheduler, satellite beams information of a satellite. A user location corresponding to the user is determined. A service beam to service the user and a distance from a center of the service beam to the user location are determined based on the satellite beams information. The service beam is a satellite beam of a plurality of satellite beams provided by the satellite, and the satellite is in communication with the user via the service beam. Carrier frequency assignment to users is made to mitigate adjacent channel interference.

Abstract: A method for carrier frequency assignment to users includes receiving, by a service provider scheduler, a service request from a user. The method further includes receiving, by the service provider scheduler, satellite beams information of a satellite. A user location corresponding to the user is determined. A service beam to service the user and a distance from a center of the service beam to the user location are determined based on the satellite beams information. The service beam is a satellite beam of a plurality of satellite beams provided by the satellite, and the satellite is in communication with the user via the service beam. Carrier frequency assignment to users is made to mitigate adjacent channel interference.

Abstract: Various aspects of the subject technology include a wireless power transmission design based on extended range near-field resonance coupling induction, where magnetic near-field range may be extended by several orders of magnitude. One element that may help to accomplish the near-field extension, in one aspect, is the addition of a transformational magnetic lens to the transmitter. The magnetic lens may be made of metamaterials with refractive index of for example, ?1. It may recover and collimate the near-field evanescent, magnetic flux, effectively extending the near-field coupling distance by several orders of magnitude.

Abstract: Various aspects of the subject technology include a wireless power transmission design based on extended range near-field resonance coupling induction, where magnetic near-field range may be extended by several orders of magnitude. One element that may help to accomplish the near-field extension, in one aspect, is the addition of a transformational magnetic lens to the transmitter. The magnetic lens may be made of metamaterials with refractive index of for example, ?1. It may recover and collimate the near-field evanescent, magnetic flux, effectively extending the near-field coupling distance by several orders of magnitude.