Abstract: A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

Abstract: A test setup for power measurement of a fast switching active antenna array with a beam switching time lower than one microsecond is described. The test setup includes at least two detector modules for detecting a signal transmitted by the fast switching active antenna array and a power sensor module for measuring the power of at least one signal received. The power sensor module has an analog-to-digital converter circuit for converting an analog signal into a digital signal. Each of the detector modules includes at least one antenna via which at least one signal transmitted by the fast switching active antenna array is received. The at least two detector modules are positioned in at least two predefined main radiation directions of the fast switching active antenna array. Each of the detector modules has a rise time, the rise time being lower than the beam switching time of the fast switching active antenna array.

Abstract: A co-time, co-frequency full-duplex terminal includes a radio frequency transceiver, a power divider, a local transmitting antenna, a controllable adaptive module, and a signal mixer. The radio frequency transceiver transmits a radio frequency signal. The power divider divides the radio frequency signal into radio frequency signals in a first path and a second path. The local transmitting antenna transmits the radio frequency signal in the first path. The controllable adaptive module controls the radio frequency signal in the second path to have an amplitude equal to an amplitude of a self-interfere signal and have a phase opposite to a phase of the self-interference signal. The signal mixer mixes the radio frequency signal, after being controlled by the controllable adaptive module, with a base station signal and the self-interference signal.

Abstract: The embodiments described herein include a transmitter that transmits a power transmission signal (e.g., radio frequency (RF) signal waves) to create a three-dimensional pocket of energy. At least one receiver can be connected to or integrated into electronic devices and receive power from the pocket of energy. The transmitter can locate the at least one receiver in a three-dimensional space using a communication medium (e.g., Bluetooth technology). The transmitter generates a waveform to create a pocket of energy around each of the at least one receiver. The transmitter uses an algorithm to direct, focus, and control the waveform in three dimensions. The receiver can convert the transmission signals (e.g., RF signals) into electricity for powering an electronic device. Accordingly, the embodiments for wireless power transmission can allow powering and charging a plurality of electrical devices without wires.

Abstract: A radio frequency receiver subject to a large in-band interferor employs active cancellation with coarse and at least one cancellation signals, each with a respective radio frequency combiner, in order to increase the effective dynamic range of the receiver for weak signals of interest. One or both can be digitally synthesized. This is particularly applicable for co-site interference, whereby the interfering transmit signal is directly accessible. A similar system and method may also be applied to external interferors such as those produced by deliberate or unintentional jamming signals, or by strong multipath signals. An adaptive algorithm may be used for dynamic delay and gain matching. In a preferred embodiment, a hybrid technology hybrid temperature system incorporates both superconducting and semiconducting components to achieve enhanced broadband performance.

Abstract: Methods and apparatus for communicating between a first node and a plurality of second nodes in a network, including a first uplink mode in which a first message is transmitted from multiple second nodes in sequence, and a second uplink mode in which a second message is sent from only a subset of nodes. A first receiving node evaluates communication path information based on messages received in the first uplink mode and returns this information via an acknowledgement to allow the subset to be selected. The first message from multiple nodes includes sequence information to allow the first node to acknowledge at an appropriate point in time. This is particularly applicable where multiple spatially separated antennas offer a receiver several observations of the same signal in an antenna diversity scheme.

Abstract: A method in which user equipment transmits a signal in a distributed antenna system in which a plurality of antennas is distributed in a cell, comprises the following steps: receiving uplink antenna information from a base station; controlling uplink power on the basis of the uplink antenna information; and transmitting an uplink signal on the basis of the uplink power control, wherein the uplink antenna information indicates a receiving antenna of the base station that receives the uplink signal.

Abstract: A display apparatus and a method of searching for a channel in the display apparatus includes a plurality of tuners and a plurality of antenna ports respectively connected to the plurality of tuners. The method includes receiving a channel search command; if the channel search command is input, searching for one of the plurality of antenna ports that is connected to a satellite antenna to receive a broadcasting signal, if one of the plurality of antenna ports is connected to the satellite antenna to receive the broadcasting signal, setting one of the plurality of tuners connected to the one antenna port, to a main tuner, and performing a channel search through the tuner set to the main tuner. Therefore, although an antenna port connected to one of the plurality of tuners initially set to a sub tuner, the display apparatus performs a channel search through the corresponding tuner.

Abstract: This disclosure involves methods and systems for compensating for imbalanced transmit antenna gains. A transmit controller independently samples the received signal in each chain of a transceiver selectively adjusts the transmit power at each antenna to minimize any indicated imbalance to improve performance at the node receiving the transmission.

Abstract: There is provided a method where a terminal amplifies an MBS signal that the terminal receives using a terminal in an MBS service, transmits the amplified signal to another terminal and controls it in order to overcome the fact it is not possible to provide high quality contents over a broad area due to interference signals between MBS zones, a terminal is used as a repeater at MBS transmission time only, and an output of a repeating signal of the terminal is controlled so that an excessive interference signal for another MBS area is not generated when the terminal operates as a repeater.

Abstract: In a method for line-of-sight-independent data transmission in a car-to-car or a car-to-infrastructure communication system, electromagnetic radiation having encoded data is transmitted from a transmitter located in a first vehicle or in a traffic infrastructure object, and a reflector system is provided for at least partially reflecting the transmitted electromagnetic radiation, wherein the reflector system is arranged so that the transmitted electromagnetic radiation arrives at a receiver located in a second vehicle or in the traffic infrastructure object. The reflected electromagnetic radiation having the encoded data can then be received by the receiver even when line-of-sight communication between the vehicles is impossible.

Abstract: A distributed antenna system includes a first antenna disposed covering a predetermined communication range, the first antenna carrying out a communication at least at a low-frequency band, and a plurality of second antennas disposed covering the predetermined communication range, the plurality of second antennas carrying out a communication at a high-frequency band. The distributed antenna system is operable to carry out a communication between the first antenna and the second antennas, and a mobile terminal located within the predetermined communication range by means of carrier aggregation using the low-frequency band and the high-frequency band. The distributed antenna system further includes a BB module equipped in a base station for carrying out a communication within the predetermined communication range, the first antenna and the second antennas being each connected to the one BB module via an RF module.

Abstract: A high-frequency switch module includes a first diplexer arranged to receive a GPS signal and to send/receive a GSM 1800 communication signal and a GSM 1900 communication signal, and a switch element arranged to switch between the sending/receiving of the GSM 1800 and the sending/receiving of the GSM 1900 communication signal. A SAW filter having a passage band corresponding to the frequency band of the GSM 1900 communication signal and a SAW filter having a passage band corresponding to the frequency band of the GSM 1800 communication signal are connected to the switch element. A line length of a transmission line for connection to the SAW filter which provides a reflection phase closer to the open side for the GPS signal as viewed from the switch element is greater than that of a transmission line for connection to the other SAW filter.

Abstract: Exemplary embodiments are directed to a transceiver. A transceiver may include a rectifier coupled to a capacitor. The transceiver may further include a power management module coupled to the capacitor, wherein the capacitor is configured as a power supply capacitor in a first mode and a rectifier capacitor in a second, different mode.

Abstract: The invention utilizes small, narrow-band and frequency adaptable antennas to provide coverage to a wide range of wireless modes and frequency bands on a host wireless device. The antennas have narrow pass-band characteristics, require minimal space on the host device, and allow for smaller form factor. The frequency tunability further allows for a fewer number of antennas to be used. The operation of the antennas may also be adaptably relocated from unused modes to in-use modes to maximize performance. These features of the antennas result in cost and size reductions. In another aspect, the antennas may be broadband antennas.

Abstract: A variable Z0 impedance method (“Variable Z0”) for designing and/or optimizing antenna systems. The method provides that the value of an antenna's feed system characteristic impedance or apparatus internal impedance (Z0) changes as a true variable quantity during the antenna system design or optimization methodology. The value is allowed to be determined by the methodology, because different values of Z0 result in different antenna system performance. It is applied to any set of performance objectives on any antenna system wherein apparatus internal or transmission line characteristic impedance is an explicit or implicit parameter. Variable Z0 is applied to any design or optimization methodology. Structures include Yagi-Uda arrays, Meander Monopoles, and transmission line Multi-Stub Matching Networks, and can incorporate Central Force Optimization or Biogeography Based Optimization or other optimization algorithms.

Abstract: A transmission apparatus includes (N+1) or more transmission antennas. A first receiving apparatus detects N or fewer transmission antennas from a received signal. A second receiving apparatus detects more than N transmission antennas from a received signal. The transmission apparatus uses a first radio resource for outputting a known signal from each of transmission antennas and uses a second radio resource for outputting a known signal from at least one of the transmission antennas. A timing difference between the first and second radio resources is smaller than or equal to a first determined difference and a frequency difference therebetween is smaller than or equal to a second determined difference. The first receiving apparatus estimates a channel state based on the known signal outputted on the first radio resource. The second receiving apparatus estimates a channel state based on the known signals outputted on the first and second radio resources.

Abstract: A method for wireless communication provisioning is disclosed. A first wireless communication provisioning state associated with one or more identifiers is defined. A second wireless communication provisioning state associated with one or more identifiers is defined. A state transition rule is defined, wherein the state transition rule defines a transition between the first wireless communication provisioning state and the second wireless communication provisioning state, wherein the first wireless communication provisioning state and the second wireless communication provisioning state are based on the lifecycle of the service of a wireless communication device associated with the first and second wireless communication provisioning states.

Abstract: An apparatus and media are provided for more effectively utilizing modems in a WiMAX environment. The apparatus connects a computing device to a network-based information system through at least a first WiMAX modem that is located within the apparatus. A second WiMAX modem can be removably coupled to the apparatus so as to connect the first computing device to the network in combination with the first WiMAX modem. In the event the second WiMAX modem is removed, network connectivity provided by the first WiMAX modem is maintained.

Abstract: According to one embodiment, an antenna switching system includes a (a?3) antennas and a selector. The selector selects b1 (2?b1<a) antennas out of the antennas at first timing, causes the selected antennas to configure an array antenna, selects, at second timing, b2 (2?b2<a) antennas including c (1?c<b1) antennas among the antennas used to configure the array antenna at the first timing out of the antennas, and causes the selected antennas to configure an array antenna.

Abstract: A wireless communication system, including: a plurality of wireless communication terminals connected to each other in a wired fashion and configuring a cluster; and a plurality of wireless communication base stations, wherein each of the wireless communication base stations divides a call signal into short signals, intermittently transmits the signals to the plurality of the wireless communication terminals, and varies transmission timing from one wireless communication base station to another, and the plurality of the wireless communication terminals receive the call signals from the plurality of the wireless communication base stations in a time division and alternate fashion.

Abstract: Provided is a portable wireless device having a plurality of antennas of different frequency bands. By positively using one antenna for improving gains of other antennas, the one antenna can be effectively used and the gains of other antennas can be improved. Patterns (A1, A2, A3, B1, B2 B3) for adding a band disturbing element (80) (high frequency blocking means), which is composed of beads and a parallel resonance circuit, are arranged at a prescribed position of a magnetic field antenna (50). The band disturbing element (80) may be composed of ferrite core or the like.

Abstract: Aspects of a method and system for sharing antennas for high frequency and low frequency applications may include configuring a multi-frequency antenna system by coupling a plurality of antennas together communicatively via one or more frequency-dependent coupling elements. Radio signals may be received and/or transmitted on one or more radio frequencies via said configured multi-frequency antenna system. The one or more frequency-dependent coupling elements may be frequency-tunable, and may comprise microstrips, transmission lines, and/or RLC circuits. The multi-frequency antenna system may be configured for concurrent operation or time-division duplex operation during the transmitting and/or the receiving. The one or more radio frequencies may operate concurrently or in time-division duplex. The radio signals for transmission may be generated in one or more radio frequency front-ends, and the received radio signals may be demodulated in one or more radio frequency front-ends.

Abstract: One embodiment is directed to a distributed antenna system that comprises a hub to receive a plurality of downlink transceiver signals output from a plurality of transceiver units and to send a plurality of uplink transceiver signals to the plurality of transceiver units. The plurality of downlink transceiver signals has overlapping frequencies and contains different communication content. The distributed antenna system further comprises a plurality of distributed antenna units, each located at a respective a remote location. The hub is configured to route a respective downlink transport signal to each of a plurality of distributed antennas, wherein each of the downlink transport signals is derived from one of the plurality of downlink transceiver signals received at the hub. Each of the distributed antenna units is configured to transmit a respective downlink radio frequency signal derived from the downlink transport signal that is routed to that distributed antenna unit.

Abstract: A mobile communication system using an adaptive multiantenna realizes improvement of reception characteristics, effective use of the band, and optimization of the throughput in comparison with a system in which application of the same multiantenna communication method is continued irrespective of a variation of the number of radio relay stations. The mobile communication system comprises a radio base station, a radio relay station, and mobile terminal stations for communicating with the radio base station through a radio relay station.

Abstract: Disclosed is a mobile terminal case, a mobile terminal having the same, and a method of manufacturing a mobile terminal case, and the mobile terminal may include a case forming an external shape with a curved surface, and a film member mounted on the case, wherein the film member may include a base film combined with the case and made of a synthetic resin material, and a metal film mounted on a surface of the base film and at least part of which is formed to correspond to the curved surface.

Abstract: Briefly, a wireless communication device that includes a processor to enable a determined number of receivers of a MIMO system according to a value provided with a request to enable the receivers is provided. A method for enabling the receivers of MIMO system is also provided.

Abstract: In a video processing system, a method and system for a mobile receiver architecture for European (EU) Band cellular and broadcasting are provided. Receive channels may be processed in at least one radio frequency front end (RFFE) in a mobile terminal and may comprise at least one of a VHF/UHF broadcast channel and EU band cellular channels capable of carrying voice and data. The cellular channels may be WCDMA 2100 MHz, GSM 1800 or 900 MHz. A single cellular/broadcast radio frequency integrated circuit (RFIC) may be utilized for processing the receive channels. In another embodiment, a cellular band RFIC may process the EU band cellular channels and a broadcast RFIC may process the broadcast channel. Moreover, a first RFIC may process the WCDMA channel, a second RFIC may process the GSM channels, and a broadcast RFIC may process the broadcast channel.

Abstract: A mobile station (101) for use in a wireless communication system includes a steerable antenna, means for obtaining location information relating to a current location of the mobile station and a steering controller for controlling a pointing direction of the steerable antenna using the location information and characterized in that the mobile station includes a memory holding a database of optimal pointing directions of the steerable antenna for given locations and the steering controller is operable to steer the antenna to the optimal pointing direction indicated in the database for the current location. Also described is a system and a method in which the mobile station operates.

Abstract: A wireless communication terminal having a radio section that performs switching between a first communication system and a second communication system to execute wireless communication by a shared antenna, and a control section for controlling the wireless communication executed by the radio section, wherein the control section monitors an incoming call in the second communication system during communication by the first communication system, when the incoming call is detected, the control section switches from the first communication system to the second communication system for a predetermined first time in which communication by the first communication system is not disconnected, and after the predetermined first time elapses, the control section switches from the second communication system to the first communication system to resume the communication by the first communication system.

Abstract: A radio communication method includes generating a first transmit RF signal and a second transmit RF signal from a data signal to be transmitted. Each of the first and second transmit RF signals have a power spectrum in symmetric shape in the frequency domain. The first transmit RF signal and the second transmit RF signal are transmitted at a different time. The first transmit RF signal and the second transmit RF signal are received to generate a first received RF signal and a second received RF signal. The data signal from the first received RF signal and the second received RF signal are reproduced.

Abstract: An optical repeater in a mobile communication system includes a main hub unit (MHU) and a plurality of repeaters connected to a plurality of access points of the MHU, respectively. Each of the repeaters receives subcarrier information and a signal transmitted from a base station, as optical signals, through the MHU or a different repeater connected thereto, processes only a signal corresponding to a subcarrier allocated to a terminal which has accessed according to the subcarrier information, and transmits the processed signal to the terminal which has accessed. Also, each of the repeaters maps a signal of the terminal which has accessed to a subcarrier allocated to the terminal which has accessed, and transmits the same to the MHU or a different repeater connected thereto.

Abstract: System, method and indoor antenna for reducing power consumption of base stations providing indoor coverage. The system comprises a base station (1), at least one indoor antenna (2) connected to the base station (1) providing coverage in an indoor coverage area and means for detecting human presence in a detection area. The base station (1) is configured to: receive (40) the information provided by the means for detecting human presence; check (42), according to said information, if human presence has been detected in the detection area, and in that case switch on (44) the base station (1); if human presence has not been detected in the detection area: check (45) if there is no traffic in the base station (1) during a predetermined period of time, and in that case switch off (46) the base station (1).

Abstract: A system and method for implementing soft handoffs in a communications system on a mobile platform. The system employs an antenna controller in communication with a beam forming network that generates two independently aimable lobes from a single beam. The single beam is radiated by a phased array antenna on the mobile platform. In an Air-to-Ground implementation involving an aircraft, a base transceiver station (BTS) look-up position table is utilized to provide the locations of a plurality of BTS sites within a given region that the aircraft is traversing. The antenna controller controls the beam forming network to generate dual lobes from the single beam that facilitate making a soft handoff from one BTS site to another.

Abstract: A method and apparatus of aiding uplink beamforming transmission is disclosed. One method includes a base station downlink transmitting beamformed signals to at least a first terminal, the beam formed signals directed and conveying data to at least the first terminal. The method further includes a second terminal eavesdropping the transmitted beamformed signals, and measuring a signal quality. The second terminal estimates uplink channel information based on the measured signal quality, for aiding uplink transmission. Based at least in part on the estimated transmission channel, the second terminal transmits beamformed uplink signals to the base station.

Abstract: Methods and systems for establishing a non-line of sight millimeter wave connection that include a transmitter unit having beam-steering capability, a receiver unit having beam-steering capability, and a reflecting unit in a position having a line-of-sight path to the transmitter unit and the receiver unit. The reflecting unit includes an attachment mechanism configured to attach to a mounting point on an object or surface, a reflecting surface that is reflective to millimeter-wave radiation, and an adjustable pivot connected between the attachment mechanism and the reflecting surface configured to permit directional positioning of the reflecting surface relative to the attachment mechanism.

Abstract: A system and method are provided for more effectively utilizing modems in a WiMAX environment, so as to improve network connectivity while providing access for both fixed as well as portable computing devices. The apparatus connects one or more computing devices to a network-based information system through at least a first WiMAX modem that is located within the apparatus. A second WiMAX modem can be removably coupled to the apparatus so as to improve network connectivity and operability. In the event, the second WiMAX modem is removed and coupled to a portable computing device, network connectivity provided by the first WiMAX modem is maintained.

Abstract: A distributed antenna system comprises a base transceiver station, a plurality of distributed antenna units and a signal routing apparatus. The base transceiver station has a plurality of output ports that generate a plurality of downlink signals having overlapping transmit frequencies and containing different communication content. The different communication content is directed toward each of a plurality of mobile units. The base transceiver station also has at least one uplink receive port that receives an uplink signal. The uplink signal includes communication content received from at least one of the mobile units. The plurality of distributed antenna units have coverage areas that are non-overlapping or only partially overlapping.

Abstract: Wireless communication is provided using very low frequency signals to environments that are otherwise difficult to reach. In one embodiment, a mobile wireless system is configured to automatically orient its antenna. A monitoring module is used to detect a current signal strength of a received radio frequency signal, as well as a current position for the mobile system. This information is compared to an expected signal strength for the current position in order to determine if the antenna should be adjusted or otherwise realigned.

Abstract: The application relates to a method for operation of an active antenna array and to an active antenna system. The active antenna system has a signal processing unit and an active antenna array adapted to be operated with a main antenna pattern correlated to a main receive beam and with at least one test antenna pattern correlated to a test receive beam having an orientation different from the main receive beam. A main radio frequency signal is received based on the main antenna pattern and a test radio frequency signal is received based on the test antenna pattern. The main radio frequency signal comprises communications traffic. Performance of the main receive beam is assessed based on the main radio frequency signal and performance of the test receive beam is assessed based on the test radio frequency signal. The main antenna pattern is adjusted based on a comparison of the performance of the main receive beam and test receive beam.

Abstract: According to one embodiment, an information processing apparatus includes an antenna element, a first wireless communication module including a printed circuit board and a wireless communication circuit which is provided on the printed circuit board, and a second wireless communication module. A diplexer is provided on the printed circuit board of the first wireless communication module, and includes a first terminal which is connected to the antenna element via a first antenna connector provided on the printed circuit board and a first cable, a second terminal which is connected to the wireless communication circuit via a wiring pattern on the printed circuit board, and a third terminal which is connected to a second antenna connector provided on the printed circuit board. The second wireless communication module is connected to the second antenna connector via a second cable.

Abstract: An omni-directional antenna supporting simultaneous transmission/reception, from the same AP, on multiple frequencies, allowing each AP to communicate using each possible frequency. Each AP multiplexes its outgoing signals onto its transmitting antenna, and de-multiplexes its incoming signals from its receiving antenna. The transmitting and receiving antennae are each substantially located in each other's NULL zone (or one is in the NULL zone of the other). The AP can transmit/receive on many distinct frequencies without needing more antennae.

Abstract: The invention relates to an RF circulator device with n ports allowing an RF signal to circulate in a single direction, where the circulator has at least three ports, an input port for receiving a radio frequency signal to be transmitted to a second port designed to be connected to an antenna port, an output port capable of being connected to a receiving device or a load, comprising a first and a second microswitches each comprising two armatures of which the first is a flexible membrane and the second comprises at least one zone of a signal line, both armatures being separated by a thickness of void or of gas, the device making it possible to connect the main line to ground planes by self-actuation of the membrane under the effect of an input signal power.

Abstract: The charging circuit includes an antenna circuit receiving radio waves, a rectifier circuit rectifying AC voltage generated in the antenna circuit to generate DC voltage, and a power supply circuit adjusting the magnitude of the DC voltage and charging a rechargeable battery using the adjusted DC voltage. The charging device may further include a charge control circuit controlling the power supply circuit so as to prevent overcharge of the rechargeable battery. The rechargeable battery may be charged by application of DC voltage to a pair of terminals, or it may be charged wirelessly in such a manner that an oscillation circuit and an output antenna circuit are additionally provided.

Abstract: A transponder power supply for providing a supply current based on an antenna input signal. The transponder power supply comprises an emergency circuit comprising a charging circuit, an emergency capacitor, and an output stage. The charging circuit is configured to charge the emergency capacitor based on the antenna input signal to a maximum voltage which is higher than a voltage of the antenna input signal. The output stage is configured to provide a contribution to the supply current using a charge of the emergency capacitor.

Abstract: A novel antenna system for receiving transmissions in the VHF and UHF frequency bands particularly suitable as a miniaturized antenna for UHF reception, such as of digital video broadcasting transmissions. The antenna system utilizes a combination of three techniques including (1) the use of dialect loading using a high dielectric constant ceramic substrate; (2) an antenna dielectrically loaded and tuned to a significantly higher frequency than desired; and (3) use of a tuning circuit to compensate for the frequency offset of the antenna thereby shifting the resonant frequency to cover the entire band. The antenna is intentionally designed to be too small to radiate at the frequency of interest. The antenna element is then ‘forced’ to be tuned to the desired lower frequency using passive (or active) reactive components as part of a tuning circuit. Multi-band operation is achieved by providing a bypass switch to connect the antenna element either to (1) a first receiver without the tuning circuit (i.e.

Abstract: Beam-formed transmission from a transmitting wireless communication station to a receiving wireless communication station is supported by estimating a direction for the beamformed transmission. The receiving station reports to the transmitting station information about wide-beam and narrow-beam pilot signals that the receiving station has received from the transmitting station. The transmitting station estimates the direction of the beamformed transmission based on this information.

Abstract: Disclosed are a method, system and apparatus for use in a network of devices which can facilitate the installation of the network. In a network consisting of multiple devices, it is often necessary to use repeaters to relay communications between two or more devices that are out of range of each other. The various aspects of the present invention provide for one or more of the devices to be selectively switched to operate as a repeater.

Abstract: Embodiments describe improved coupling of power amplifiers to antennas for the transmission of signals, such as OFDM signals. A large number of separate windings are utilized on a primary side, wherein each winding is for a different OFDM tone. Each OFDM tone may be amplified individually and combined as a results of transformer coupling. For example, the secondary side can have a single winding that combines the different OFDM tones.

Abstract: Embodiments include systems and methods for controlling beam direction of an array of antenna elements in a wireless communications system. In one embodiment, aperture control shutters substantially cover each radiating antenna element. Each aperture control shutter is selectively turned on or off to control the direction of a beam of the antenna array.