Abstract: A communication system is disclosed. In an embodiment, the communication system includes a user node for receiving data from a remote application program, the data including message data for communication to a central application program operatively associated with the remote application program; plurality of geographically distributed gateway nodes; one or more access nodes for receiving the message data from the user node via a first communications interface, and communicating the message data via a second communications interface to one or more of the plurality of geographically distributed gateway nodes; and a hub for communicating with the one or more of the plurality of geographically distributed gateway nodes to receive the message data for communication to the central application.

Abstract: A control method executed by a system including a beacon and a computer capable of executing an application, the control method includes receiving a radio wave from the beacon; generating a pattern of transition in reception intensity of the received radio wave; generating a profile of a temporal change by simplifying the generated pattern of transition; comparing the generated profile with at least one of a plurality of reference profiles different from each other; and determining how to control the application in accordance with a result of the comparing.

Abstract: A compact Butler matrix consists a planar multilayer structure comprising N parallel metal plate waveguides PPW, stacked one on top of the other, two adjacent waveguides PPW comprising a common wall consisting of one of the metal plates. The couplers, the phase-shifters and the crossover devices of the Butler matrix consist of metasurfaces incorporated in the metal plates. The planar two-dimensional beam-former can comprise a Butler matrix with waveguides PPW associated with optical lenses incorporated in each waveguide PPW. Alternatively, the planar two-dimensional beam-former can comprise an upper stage consisting of a Butler matrix with waveguides PPW, and a lower stage comprising waveguides PPW equipped with incorporated reflectors, the two stages being connected in series.

Abstract: A constellation of satellites form a communication system that includes communication between satellites and ground terminals as well as communication between satellites. The inter-satellite communication is implemented via wireless network comprising a first set of rings in a first orientation and a second set of rings in a second orientation. Each ring of the first set of rings and the second set of rings comprises two ringlets transmitting in opposite directions. Each satellite of the plurality of satellites is configured to communicate in a ring of the first set of rings and communicate in a ring of the second set of rings.

Abstract: Configurations and methods of wireless power transmission for charging or powering one or more electronic devices inside a vehicle are disclosed. A transmitter capable of single or multiple pocket-forming may be connected to a car lighter, where this transmitter may include a circuitry module and an antenna array integrated within the transmitter, or operatively connected through a cable. This cable may allow the positioning of the antenna array in different locations inside the vehicle suitable for directing RF waves or pockets of energy towards one or more electronic devices. Transmitter's configuration can be accessed by one or more electronic devices through Bluetooth communication in order to set up charging or powering priorities.

Abstract: Systems and methods for providing broadband internet access to mobile platforms such as vehicles, aircraft, and portable devices, using a network of one or more entities such as drones/unmanned aerial vehicles (UAVs). In one embodiment, the drone communication system comprises an antenna sub-system, a radio sub-system and a data switching sub-system. The mobile platforms comprise antenna and radio sub-systems to communicate with the drones, detect changes in the mobile platforms azimuth and elevation changes, and adjust the mobile platform's antenna beam to compensate for the orientation changes to optimally point toward the drones. The exemplary mobile platform further comprises methods to detect the need for handoff to a different drone and to carry out the handoff.

Abstract: The present disclosure describes the system and methods for providing broadband internet access to homes and enterprises using a network of drones/UAVs. The drone communication system is composed of an antenna sub-system, a radio sub-system and a data switching sub-system. Drones form and point beams toward ground terminals in different areas in a space division multiple access scheme. Ground terminals are composed of an antenna sub-system and a radio sub-system. Ground terminals search for the drone from which they receive the strongest signals. Drone and ground terminals comprise of methods and systems to calibrate receive and transmit antenna elements. Drone radio sub-system keeps track of the drone's position and orientation changes and adjust drone's antenna beam accordingly to point to the same location on the ground as the drone moves.

Abstract: A laser relay module in a free space optical communication network includes: a beacon source for generating an optical beacon signal for aligning a communication channel of a source optical node to a communication channel of a receiving optical node; a beacon inserter for encoding the optical beacon signal with switching information; a telescope for transmitting the encoded optical beacon signal to the receiving optical node; a beacon detector for detecting received switching information from the modulated optical beacon signal, wherein the receiving optical node uses the encoded optical beacon signal to align communication channel of the receiving optical node with communication channel of the source optical node; and a processor for using the detected switching information to change configuration of an optical switch matrix to direct received data to a next optical node in the free space optical communication network.

Abstract: Disclosed are a multi-beam antenna system and a method of controlling an output power thereof. An embodiment of the present invention includes a beam forming network configured to receive a plurality of signals to be a plurality of beams, to divide each of the plurality of signals to a plurality of divided signals, and to output a plurality of excited signals by adjusting and combining amplitude and phase of each of the plurality of divided signals, an MPA set having a plurality of MPAs configured to receive corresponding excited signals among the plurality of excited signals from the beam forming network and to control output powers of the received excited signals according to communication traffic, and a feed array having a plurality of feeds configured to form a multi-beam by being excited according to the amplitude and phase of the excited signals from the MPA set.

Abstract: A satellite comprises an antenna system configured to provide a plurality of spot beams including one or more small spot beams illuminating a first region of a coverage area, one or more large spot beams illuminating a second region of the coverage area separate from the first region and one or more intermediate sized spot beams illuminating a transition region of the coverage area that is located between the first region and the second region so that the one or more small spot beams are separated from the one or more large spot beams by the one or more intermediate sized spot beams. The one or more intermediate sized spot beams serve to mitigate C/I for the one or more spot beams.

Abstract: Various embodiments described herein are directed to methods and systems for multibeam adaptive antenna architectures for recovering user signals in the coverage area of the antenna in the presence of interference sources. For example, various embodiments may utilize an architecture comprised of an array of antenna feeds, an RF to baseband conversion subsystem, a bank of digital beamformers, a channelization subsystem, a bank of weighted combiners, and a bank of demodulators for the demodulation and detection of user signals. The multiple beamformers introduce nulls in the direction of interference sources based on distinct adaptive algorithms for providing different antenna beam patterns after adaptation. Various other embodiments may utilize architecture for providing the directions of the interference sources or intentional jammers.

Abstract: A beamforming method is provided. The beamforming method includes determining different beams for pieces of user equipment based on channel information fed back from the pieces of user equipment, predicting beam qualities of the pieces of user equipment for the beams, determining whether the beam qualities satisfy Quality of Service (QoS) for the pieces of user equipment, generating a wide nulling beam by applying wide nulling to a second beam having a side lobe acting as interference against one first beam, when the beam quality of the first beam does not satisfy the QoS; predicting beam qualities for the beams including the wide nulling beam instead of the second beam, and simultaneously communicating with the user equipment through the beams including the wide nulling beam instead of the second beam, when the beam qualities for the beams including the wide nulling beam instead of the second beam satisfy the QoS.

Abstract: Disclosed herein are a beamforming method, a method of determining a beamforming coefficient, and an ultrasonic imaging apparatus.

Abstract: Disclosed herein are techniques and systems for inter-device bearing estimation. Particularly, sensor fusion techniques are disclosed that combine motion data of a local computing device with beamforming data of the local computing device to determine a line-of-site path between the local computing device and a remote computing device. A motion sensor(s) of a local computing device may generate motion data from movement of the local computing device. The local computing device may further determine a direction, relative to the local computing device, of a beampattern in which an antenna(s) of the local computing device radiates energy, the beampattern direction being along a communication path between the local computing device and a remote computing device. The local device may then determine, based at least in part on the motion data and the direction of the beampattern, whether the communication path corresponds to a line-of-sight path between the local and remote devices.

Abstract: Aircrafts or unmanned air vehicles flying near Earth are used as airborne communications towers or relays. Using techniques of ground based beam forming and wavefront multiplexing enhance the ability to coherently combine the power of the communication signals, and improve the signal-to-noise ratio.

Abstract: A method for modifying a communication signal for transmission from a source to a destination includes identifying, by data processing hardware, a target platform for communication with a communication device. The method includes establishing a communication connection between the target platform and the communication device and identifying an available communication channel for communicating data between the target platform and the communication device. The method also includes modifying a communication signal by multiplying the communication signal with a pseudo random noise spreading code. The method also includes causing transmission of the modified communication signal from the communication device to the target platform through the available communication channel. The modified communication signal is transmitted below a thermal noise of the available communication channel.

Abstract: An information handling system includes a first subsystem having a first data module configured to provide a first signal, a second data module configured to provide a second signal, the first signal and the second signal are different types of signals, and a first aggregator unit coupled to the first data module and the second data module, and a second subsystem coupled to the first aggregator unit via a first aggregated signal line. The first aggregator unit receives the first signal from the first data module and the second signal from the second data module, aggregates, based upon a first aggregation algorithm, the first and second signals to create a first aggregated signal. The first aggregation algorithm aggregates the first signal and the second signal based on a specific type of each signal and provides the first aggregated signal to the second subsystem via the first aggregated signal line.

Abstract: Cellular array implementations with multiple steerable spotlight beams irradiated from a common aperture are disclosed herein. Such an approach can easily be adapted to suit various geographical population densities and distributions. The array is capable of producing multiple 65-degree cellular coverage beams, which may be used for regular coverage or in MIMO (Multiple Input Multiple Output) mode. The array may also produce multiple steerable beams, or “spotlight” beams. These beams may be relatively narrow and may be steered electronically both in azimuth and elevation directions. By steering the beams in this way, the beams are able to provide cellular services at high-demand “hotspot” regions where high capacity service is required. The spotlight beams may also be used to fill voids or deficiencies caused by regular coverage beams.

Abstract: A particular first wireless device having a plurality of antennas and that is part of a group of a plurality of first wireless devices, transmits to a second wireless device (whose location is to be determined) a packet across the plurality of antennas of the particular first wireless device simultaneously with a plurality of packets transmitted by a corresponding one of other first wireless devices in the group. The packet transmitted by the particular first wireless device uses a subset of a set of subcarriers available for use in the packet such that substantially the entire set of subcarriers are used in the aggregate across the plurality of packets simultaneously transmitted by the plurality of first wireless devices in the group to the second wireless device. The simultaneous reception of the plurality of packets at the second wireless device enables the second wireless device to determine its location.

Abstract: Various techniques for providing network connectivity are described herein. In one example, a moving object includes an uplink device of the moving object to connect the moving object to a publicly available computer network. The moving object also includes a downlink device of the moving object to be communicatively coupled to a remote device at a specific segment along a route of the moving object. The remote device is to provide data received via the downlink device to a user. The moving object also further includes a cache store communicatively coupled to the uplink device and the downlink device. Implementations include the use of commercial airplanes for providing connectivity via intermittent access and refreshing of a cache store that makes content available to end users.

Abstract: A spacecraft arrangement having sensors for providing the three dimensional imaging of space object to be imaged and having a plurality of spaced apart nodes defining an open imaging area therebetween through which imaging area the space object to be imaged passes.

Abstract: The present invention features novel methods of implementing configurable arrays for personal portable devices including hand-held mobile devices and re-locatable wireless devices, utilizing a wireless communications system that employs multiple individual hubs and/or base-stations. The digital beam forming (DBF) methodology utilizes multiple low gain elements conformal to the mechanical contours of handheld devices to function as arrays. The distributed N element arrays dynamically provide the options of reconfigurable shaped beams with near hemispheric radiation patterns for various handheld orientations and conditions by various users, while also supporting operations of multiple orthogonal beams concurrently connecting to multiple hubs. The larger the N becomes, the more flexibility the residing devices can provide.

Abstract: Methods for providing high-speed connectivity to an aircraft in flight from a satellite. Example methods include transmitting first radio frequency signals from a wide-beam antenna at the satellite at a beamwidth of at least 6 degrees orbital arc to provide a wide coverage area. The first radio frequency signals are transmitted at a first frequency of at least 10 gigahertz and at a low equivalent isotropic radiated power. The method also includes receiving second radio frequency signals from a mobile antenna located on the aircraft, wherein the second radio frequency signals are received at a second frequency of at least 13.75 gigahertz, and the second frequency is different than the first frequency.

Abstract: Cellular array implementations with multiple steerable spotlight beams irradiated from a common aperture are disclosed herein. Such an approach can easily be adapted to suit various geographical population densities and distributions. The array is capable of producing multiple 65-degree cellular coverage beams, which may be used for regular coverage or in MIMO (Multiple Input Multiple Output) mode. The array may also produce multiple steerable beams, or “spotlight” beams. These beams may be relatively narrow and may be steered electronically both in azimuth and elevation directions. By steering the beams in this way, the beams are able to provide cellular services at high-demand “hotspot” regions where high capacity service is required. The spotlight beams may also be used to fill voids or deficiencies caused by regular coverage beams.

Abstract: An information handling system includes a first subsystem having a first data module configured to provide a first signal, a second data module configured to provide a second signal, the first signal and the second signal are different types of signals, and a first aggregator unit coupled to the first data module and the second data module, and a second subsystem coupled to the first aggregator unit via a first aggregated signal line. The first aggregator unit receives the first signal from the first data module and the second signal from the second data module, aggregates, based upon a first aggregation algorithm, the first and second signals to create a first aggregated signal. The first aggregation algorithm aggregates the first signal and the second signal based on a specific type of each signal and provides the first aggregated signal to the second subsystem via the first aggregated signal line.

Abstract: A method of providing a communication link for a mobile platform. The method may involve generating a single beam and controlling the single beam to simultaneously generate first and second communication lobes from the single beam, with the first communication lobe being steered to communicate with a first base transceiver station (BTS). The method may further involve simultaneously using the second communication lobe to communicate with the second BTS and fading out the first lobe so that communication with the mobile platform is transferred to the second BTS.

Abstract: When a scheduling executing section allocates a use downlink radio resource including in a frequency direction a frequency band, in which a known signal is not received by an uplink radio resource for known signal, from a downlink radio resource associated with the uplink radio resource for known signal to a communication terminal, a communication section generates a known signal to be received from the communication terminal in a frequency band of the use downlink radio resource in a pseudo manner when performing downlink communication with the communication terminal using the use downlink radio resource. The communication section controls transmission directivity in a plurality of antennas based on a new reception signal obtained by adding the pseudo known signal as a desired wave component to a reception signal that is received in the frequency band of the use downlink radio resource in the uplink radio resource for known signal.

Abstract: Methods, systems, and apparatuses for a portable device capable of receiving satellite navigational system signals to retrieve visibility mask information corresponding to the portable device's current location and/or trajectory are described.

Abstract: A method for delivery of data to an end user, wherein the method comprises the steps of hosting at a first location a first receiver, specific to the first location, receiving data on said first receiver, forwarding data from the first receiver to a processor, for processing the data, forwarding the processed data to a Content Delivery Network (CDN), with at least one node connected to the Internet, receiving on the at least one node of the CDN a request from the end user to have access to data specific to the first location, verifying the identity of the end user and, where the verification is positive and forwarding processed data from the at least one node of the CDN to the end user via the CDN and Internet.

Abstract: Disclosed herein is a method for determining the location of a mobile station with greater accuracy than serving base station location and yet preferably without the consumption of network resources typical of satellite-based location determination. The method is applicable in a scenario where a mobile station is ping-ponging (or has just been ping-ponging) between two non-coterminous wireless coverage areas. According the method, in that scenario, the location of the mobile station will be approximated conveniently as the location of overlap between the two wireless coverage areas, since it is most likely that the mobile station resides in that overlap area.

Abstract: In a system that performs mobile communication using at least two beams, by determining a size of a beam based on information that is acquired for mobile terminals attempting an access, a beam of a form having an adaptive size is formed and thus communication is performed. A beam sector including a plurality of beam segments and a beam segment that forms a beam of a minimum size within entire coverage is set, and while forming one beam per beam sector, a size of a beam is adaptively determined.

Abstract: Described herein are various technologies pertaining to predicting an amount of electrical power that is to be generated by a power system at a future point in time, wherein the power system utilizes a renewable energy resource to generate electrical power. A camera is positioned to capture an image of sky over a geographic region of interest. The image is analyzed to predict an amount of solar radiation that is to be received by the power source at a future point in time. The predicted solar radiation is used to predict an amount of electrical power that will be output by the power system at the future point in time. A computational resource of a data center that is powered by way of the power source is managed as a function of the predicted amount of power.

Abstract: One embodiment is directed to an aircraft position report system. The system comprises a satellite, an aircraft position reporting receiver mounted on the satellite, an antenna element mounted on the satellite, and an antenna interface mounted on the satellite. The aircraft position reporting receiver receives aircraft position reports through the antenna element by associating a spot beam with a narrow coverage area. The aircraft position reports are derived from a signal produced by the antenna element. The antenna interface changes the narrow coverage area associated with the spot beam to receive aircraft position reports from a wide coverage region within a reporting period. In one exemplary embodiment, the antenna interface mechanically steers the spot beam for each receiver to one of the narrow coverage areas. In another exemplary embodiment, the antenna interface electronically steers the spot beam for each receiver to one of the narrow coverage areas.

Abstract: A system for interference suppression onboard a satellite includes a beamforming module that processes radio-frequency (RF) signals originated from a plurality of antenna elements of an array antenna to generate multiple analog signals. At least one of the analog signals is an anti-interference signal. Analog-to-digital converters convert the analog signals to a number of digital signals. A processing module processes the digital signals to generate a phase and amplitude control signal. A summation module generates one or more composite signals with reduced interference.

Abstract: Systems, devices, and methods for determining and applying true time delay (TTD) values for compensating for free-space path length differences between a phased array and a reflector in wideband communication are disclosed. TTD values are determined for individual and groups of antenna elements in phased array fed reflector (PAFR) antennas based distances from a focal region of the reflector. The distance from the focal region of the reflector and the offset of the phased array from the reflectors focal plane can be used to determine path length differences. Corresponding TTD values for antenna elements are then determined based on the path length difference associated with the antenna elements. Each antenna element can be coupled to a TTD element to provide the corresponding TTD value to the signals received by and generated by the antenna elements of the phased array. The TTD elements include transverse electromagnetic (TEM) mode mechanisms.

Abstract: Some demonstrative embodiments include devices, systems and/or methods of wireless communication via multiple antenna assemblies. For example, a device may include a wireless communication unit to transmit and receive signals via one or more quasi-omnidirectional antenna assemblies, wherein the wireless communication unit is to transmit, via each quasi-omnidirectional antenna assembly, a plurality of first transmissions, to receive, in response to the first transmissions, a plurality of second transmissions from another device via one or more of the quasi-omnidirectional antenna assemblies, and, based on the second transmissions, to select at least one selected transmit antenna assembly for transmitting to the other device and a selected receive antenna assembly for receiving transmissions from the other device. Other embodiments are described and claimed.

Abstract: A system and method are disclosed which may include providing at least one satellite having a plurality of beamformers configured to provide a plurality of respective beams having a plurality of different respective fixed pitch angles about an axis of the satellite; causing the at least one satellite to move around the earth along a non-geostationary orbit; establishing a data communication path between a first of the beamformers on the satellite and a communication target, the data communication path having a satellite end at the first beamformer and an target end at the communication target; shifting the satellite end of the data communication path through a succession of the beamformers as the satellite moves along its orbit; and at least substantially reducing an amount of RF wave energy directed to beamformers of the plurality of beamformers not forming part of the data communication path.

Abstract: A method is provided that includes measuring amplitudes and phases of signals reflected off a reflector of a satellite, with the amplitudes and phases forming a first set of measurements. The method includes calculating an element correlation matrix as a function of the first set of measurements. The element correlation matrix represents a radiated feed element pattern off the reflector. And the method includes adjusting a formed beam pattern of a beamformer based on the element correlation matrix to thereby compensate for a non-ideal surface of the reflector.

Abstract: A method for detecting a beacon signal, by receiving a beacon signal and processing the beacon signal with respect to a local copy of the beacon signal. The processing including multiplying the beacon signal with a local copy of the beacon signal and integrating the result to generate a background noise filtered beacon signal output. The beacon signal output may be utilized to align an antenna with the beacon signal by adjusting alignment until the beacon signal output is either maximized or minimized, depending upon the function applied.

Abstract: Systems and methods for optimizing low profile SATCOM antenna panels affixed to a moving vehicle. An elongated SATCOM antenna panel has a narrow azimuth beam optionally having a typical width of no more than a 2-degree angle while the SATCOM antenna panel is maintained parallel to the motion trajectory of a carrying vehicle. An actuation unit rotates the SATCOM antenna panel about three orthogonal axes: a longitudinal axis (Roll rotation), a vertical axis (Yaw rotation) and a lateral axis (Elevation rotation). The actuation unit actuates the antenna panel so it is maintained aligned with the Earth's equatorial plane and the narrow azimuth beam optionally having a typical width of no more than 2-degree angle eliminates adjacent satellite illumination.

Abstract: Methods, systems, and devices are described for orienting a satellite antenna. In the methods, systems, and devices of the present disclosure, a satellite may provide multiple spot beams, each of the spot beams associated with a specific coverage area. The satellite may also transmit a wide beam downlink signal over a wide area beam having a coverage area that includes each of the spot beams. The satellite may receive an uplink beacon signal. The satellite antenna may be positioned according to azimuth and elevation determined from ground measurements of the spot beams and the satellite measurements of the uplink beacon signal.

Abstract: Disclosed herein is a tracking system configured to track a product and/or an activity. The tracking system comprises a tracing device and a verification server. The tracing device is coupled with the verification server by means of communication means configured to allow exchange of data between the tracing device and the verification server. The tracing device is coupled with a first satellite localization receiver which is configured to receive signals from a satellite localization system, process the received signals to obtain satellite localization observables, and compute locations based on the satellite localization observables. The tracing device is configured to acquire from the first satellite localization receiver positioning data. The tracing device is further configured to provide the verification server with the positioning data and the satellite localization observable acquired from the satellite localization receiver.

Abstract: System and methods provide tracking capabilities by one or a plurality of satellites for a mobile terrestrial terminal. A user requests that a satellite track a particular mobile terrestrial terminal. If the user privilege level allows for this level of control, the satellite adjusts to track the identified terminal. One method for tracking involves the use of a steerable antenna in which the antenna steers to maintain a footprint over the identified mobile terminal. Another method for tracking involves moving the satellite itself to maintain a footprint over the identified mobile terminal. The tracking functionality may utilize a closed loop tracking method.

Abstract: A satellite communication system designed to communicate with wireless communication devices (WCDs) by use of a mosaic pattern of signal beams uses multiple beams to augment the communication with individual WCDs. In addition to communication with a WCD through a primary beam for that WCD, adjacent beams are used, but with signals utilizing circuit parameters assigned to the primary beam. The signals from a given WCD are relayed in a backhaul, either as an aggregate signal processed by the satellite, or as backhaul communication signals to be combined or separated on the ground.

Abstract: Some demonstrative embodiments include devices, systems and/or methods of wireless communication via multiple antenna assemblies. For example, a device may include a wireless communication unit to transmit and receive signals via one or more quasi-omnidirectional antenna assemblies, wherein the wireless communication unit is to transmit, via each quasi-omnidirectional antenna assembly, a plurality of first transmissions, to receive, in response to the first transmissions, a plurality of second transmissions from another device via one or more of the quasi-omnidirectional antenna assemblies, and, based on the second transmissions, to select at least one selected transmit antenna assembly for transmitting to the other device and a selected receive antenna assembly for receiving transmissions from the other device. Other embodiments are described and claimed.

Abstract: One embodiment is directed to an aircraft position report system. The system comprises a satellite, an aircraft position reporting receiver mounted on the satellite, an antenna element mounted on the satellite, and an antenna interface mounted on the satellite. The aircraft position reporting receiver receives aircraft position reports through the antenna element by associating a spot beam with a narrow coverage area. The aircraft position reports are derived from a signal produced by the antenna element. The antenna interface changes the narrow coverage area associated with the spot beam to receive aircraft position reports from a wide coverage region within a reporting period. In one exemplary embodiment, the antenna interface mechanically steers the spot beam for each receiver to one of the narrow coverage areas. In another exemplary embodiment, the antenna interface electronically steers the spot beam for each receiver to one of the narrow coverage areas.

Abstract: A communications system and method are disclosed that may include a constellation of satellites operating in a substantially equatorial, non-geostationary orbit; a plurality of ground stations configured to communicate with the satellites, at least one given ground station of the ground stations lacking a wired connection to any global communications network; and at least one gateway station coupled to a global communications network and to at least one said satellite, wherein each satellite includes at least one antenna having a steerable beam, the antenna being controllable to continuously direct a concentrated spot beam toward the given ground station.

Abstract: A method for iterative estimation of a set of unknown channel parameters in a beamforming network including determining a first order estimate of offsets at measurement nodes and an estimate of the confidence in the initial estimate of the measurement nodes' offsets, and iterating, until a desired estimation accuracy is obtained, determining an improved estimate of a parameter set, and the confidence in the estimates, using the prior estimate of the offsets at the measurement nodes and determining an improved estimate of the offsets at the measurement nodes and the associated confidence values using the prior estimate of the parameter set and the corresponding confidence values.

Abstract: According to one embodiment, a method for communication includes receiving, by a receiver, a first modulated signal. The first modulated signal includes at least one error. The method also includes demodulating the first modulated signal. The demodulation includes compensating for the at least one error utilizing information related to a velocity of the receiver.

Abstract: A antenna system for generating and distributing power among a plurality of non-focused beams is provided The system comprises a reflector having a focal plane and a non-parabolic curvature configured to form the defocused beams. The curvature is configured to create a symmetrical quadratic phase-front in an aperture plane of the reflector. The system further comprises a plurality of feed antennas disposed in the focal plane of the reflector and configured to illuminate the reflector. Each feed antenna is configured to contribute power toward each of the defocused beams. The system further comprises a plurality of fixed-amplitude amplifiers, at least one of which corresponds to each feed antenna.