Abstract: A system for estimating parameters of an incoming signal is provided. At least one antenna is coupled to at least one suitable receiver. The antenna(s) are spatially translated in an arbitrary trajectory. As the antenna(s) is being spatially translated, a data processing means samples the incoming signal at set intervals based on a clock signal provided by a system clock. By sampling the incoming signal at different times at different spatial locations on the arbitrary trajectory, the system acts as a synthetic antenna array. The different samplings of the incoming signal at different times and positions provide signal diversity gain as well as different readings which can be used to estimate and/or calculate various parameters of the incoming signal. The different samplings can be used to detect the incoming signal, estimate its angle of arrival, estimate its time of arrival, as well as other parameters.

Abstract: In a semiconductor device which can perform data communication through wireless communication, to suppress transmission and the like of an AC signal, the semiconductor device includes an input circuit to which a radio signal is input, a first circuit, which generates a constant voltage, such as a constant voltage circuit or a limiter circuit, a second circuit to which the generated constant voltage is input and which can change impedance of the semiconductor device, and a filter provided between the first circuit and the second circuit. Transmission of an AC signal is suppressed by the filter, and malfunctions or operation defects such as complete inoperative due to variation in the constant voltage is prevented.

Abstract: Embodiments include systems and methods for testing a wireless device, especially one with multiple antennas. In one embodiment, a plurality of antennas are placed around a device under test in an anechoic chamber. Each of a plurality of the antennas is connected to a path of a variable path simulator capable of generating multiple paths between the antennas and external wireless communication test equipment. The variable path simulator introduces a delay spread into each path. In this way, a multipath environment is simulated with signals appearing to arrive from different angles and different distances.

Abstract: A method for identifying noise sources for automation devices (1, 2) which have a multiplicity of input/output modules (2a, 2b, . . .

Abstract: A mobile device wirelessly detects another device that is proximate. The mobile device provides to the other device identifications of which content from a particular content source is stored by the mobile device. The mobile device provides to the other device content from the particular source that is stored by the mobile device but not the other device, and receives from the other device content from the particular source that is stored by the other device but not by the mobile device, so that upon conclusion of an interaction between the mobile device and the other device, each device comprises all of the content from the particular content source originally comprised en toto between the two devices.

Abstract: A magnetic field tolerant amplifier having an amplifier stage, a differential to single-ended output amplifier stage and a first and second delay line. In another embodiment the invention relates to a magnetic gradient cancellation delay line including two coils connected in series at a junction and non-inductively wound to cancel induced currents from magnetic gradient. In another embodiment the invention relates to a patient lead including a flexible circuit substrate having a flexible conductor having distributed impedance. In still yet another embodiment the invention relates to a wireless transceiver system including an RF cancellation delay line; a differential amplifier stage; a differential to single ended output amplifier stage; an A/D converter; an RF transceiver and an antenna.

Abstract: A mobile device includes an air chip card for wireless connectivity to the internet or another mobile device, the air chip card being removably connected to the mobile device. A plurality of calling numbers are associated with the mobile device where an active call can be switched from one number to another. Means captures images for engaging in a video chat. A chat window displays the video chat. An optical port ports information to and from the mobile device where the optical port further enables scanning of objects. Means displays a flash in message. Means attaches a webpage to the mobile device for changing functions of the mobile device. Means solar charges the mobile device.

Abstract: A mobile device is described herein in which the mobile device can have a base portion that can include a guide base and can also have a slider portion that can include a sliding plate. The slider portion can be slidably engaged with the base portion and can move relative to the base portion. The mobile device can also include a cover plate that can be slidably engaged with the guide base of the base portion and the sliding plate of the slider portion. In one arrangement, the cover plate can be configured to selectively cover a slot of the sliding plate. As an example, when the slider portion moves from a closed position to an open position, the cover plate can move in substantially the same direction as the slider portion due to a friction coefficient between the cover plate and the sliding plate being greater than a friction coefficient between the cover plate and the guide base.

Abstract: A testing device comprises a transmission path comprising at least one leakage conduction antenna disposed in the cabin of the aircraft, a control device coupled to the transmission path, said control device comprising a generating device for generating a broad-band interference signal and a transfer device for feeding an HF signal to the leakage conduction antenna, wherein the fed HF signal has a pre-defined power level and contains at least the generated broad-band interference signal, at least one measuring device coupled to the transmission path at a pre-defined coupling point, said measuring device measuring the power level of the HF signal at the coupling point and preparing a measurement signal that is proportional to the measured power level, and an evaluation means for preparing a test result by way of a comparison between the prepared measurement signal and a target signal that depends on the power level of the fed HF signal.

Abstract: A method and a device for determining channel feedback information in a Long Term Evolution (LTE) system are provided. The method includes: obtaining an (N?1)th layer interference-plus-noise matrix in an LTE system, and obtaining an Nth layer interference-plus-noise matrix according to the (N?1)th layer interference-plus-noise matrix; and then, calculating a Signal to Interference plus Noise Ratio (SINR) corresponding to the Nth layer interference-plus-noise matrix according to the Nth layer interference-plus-noise matrix, and determining channel feedback information according to the SINR. It can be seen that, in the embodiments of the present invention, in a processing manner, a current layer interference-plus-noise matrix is calculated according to an obtained previous layer interference-plus-noise matrix through calculation in a calculation process of the channel feedback information, thus effectively reducing the calculation amount in the calculation process of the channel feedback information.

Abstract: The present specification describes techniques and apparatus that enable wireless devices to communicate effectively at short ranges. In one implementation, the transmit power of a transmitting device is reduced to permit a receiving device to demodulate a signal.

Abstract: A system and method for enabling coordinated beam switching and scheduling in a wireless communications system. A method for controller operation includes indicating that the controller is operating in a cooperative beam switching mode, transmitting a beam formed reference signal (BFRS), from each communications device being served by the controller, receiving a measurement of a communications channel between the controller and the communications device and an indicator indicating a transmission unit corresponding to the measurement of the communications channel, receiving a transmission intended for a communications device, and causing the transmission to be transmitted to the communications device. The BFRS is beam formed using a plurality of beam patterns, the beam pattern used in beam forming the BFRS changes once per transmission unit, and the transmission is transmitted using measurement of the communications channel and the indicator from the communications device.

Abstract: A method for communication includes transmitting data from a transmitter to a receiver using Adaptive Coding and Modulation (ACM). The data rate is set by selecting, based on feedback, an ACM profile defining a Forward Error Correction code and a modulation scheme. Upon detecting that the feedback is unusable, an operation of the transmitter is changed independently of the feedback. In another method, data is exchanged over two opposite directions of a bidirectional link that uses ACM by communicating using two ACM profiles. A joint constraint is defined on the two directions. The two ACM profiles are set based on first and second measured reception quality metrics of the two link directions, to meet the joint constraint. In yet another method, a subset of the ACM profiles is temporarily disabled, and the data is transmitted using only the ACM profiles that are not disabled.

Abstract: A mobile device system includes a plurality of mobile devices, each to which unique identification information is assigned, wherein each mobile device includes a location-information acquisition unit, a communication unit, and a group registration unit. The communication unit links location information acquired by the location-information acquisition unit of the mobile device and the identification information of the mobile device, sends the information to other mobile devices, and receives from the other mobile devices location information of the other mobile devices and identification information linked to the location information of the other mobile devices. The group registration unit detects other mobile devices located within a predetermined range of the mobile device on the basis of the location information of the other mobile devices and the location information of the mobile device and registers the identification information of the detected other mobile devices as a group.

Abstract: A high frequency power amplifier maintains an excellent linearity regardless of a fluctuation of a load impedance and is downsized. The high frequency power amplifier detects an AC voltage amplitude at an output terminal of a final amplification stage transistor, and suppresses an input signal amplitude of a power amplifier when the voltage amplitude exceeds a predetermined threshold value.

Abstract: A communication system comprising one or more transceiver units of a first type and one or more transceiver units of a second type capable of communicating with the transceiver units of the first type; each transceiver unit of the first type comprising: a frequency comparison unit for comparing the frequency of a signal received from a transceiver unit of the second type with a reference frequency; a feedback signal generator for generating a feedback signal dependent on the result of that comparison; and a transmitter for transmitting that signal to the transceiver unit of the second type; and each transceiver unit of the second type comprising: a local frequency reference unit on which the frequency of signals transmitted by it are dependent; and a frequency adjustment unit for receiving the feedback signal and adjusting the local frequency reference unit in dependence on the feedback signal.

Abstract: A device for interfacing with multiple different types of network access points includes multiple power amplifiers, a switch and a power detecting circuit. The power amplifiers are configured to provide corresponding signals associated with the different types of network access points, each signal having at least one parameter different than a corresponding parameter in another signal. The switch is configured to select one of the signals to provide an output signal. The power detecting circuit is configured to detect power of the output signal, and includes multiple states corresponding to the multiple different types of network access points. The power detecting circuit outputs a voltage level within the same voltage range for the signals in response to the multiple states corresponding to the different types of network access points with which the signals are associated.

Abstract: A portable wireless communications device to be carried by a holster includes a portable housing carrying a wireless transceiver, a holster sensor, a local alert indicator, a user authentication input device, and a controller. The controller may store data and is connected to the wireless transceiver, the holster sensor, the local alert indicator, and the user authentication input device. The controller may be switchable to a pickpocket mode for activating the local alert indicator, wirelessly sending at least one remote alert message, and rendering unusable at least a portion of the stored data upon removal from the holster unless a user authentication is input before expiration of a predetermined time.

Abstract: Embodiments include systems and methods for RFI mitigation in a wireless computing environment. In one embodiment, a platform determines RFI information of the platform by listening with a receiver of a transceiver of the platform when the transmitter of the transceiver is quiescent. The platform derives Frequency Domain Weights from the RFI information and transmits the Frequency Domain Weights to a Wireless Access Point (WAP). In the transmitter and receiver of the WAP, the Frequency Domain Weights are applied to signals received and to be transmitted.

Abstract: An electronic device includes a transmitter circuit, a receiver circuit, a first conductor, and a second conductor of a return path being a grounded line. The first conductor is surrounded by a dielectric. A plurality of resistive elements are connected in parallel between the first conductor and the second conductor. The first conductor transfers therethrough a transmission signal from the transmitter circuit. The length of the line of the first conductor is set to be greater than or equal to one half of the product between the inverse of the signal transfer rate of the first conductor and the velocity of light traveling through the dielectric. The resistive elements are provided along the line of the first conductor for every unit distance being equal to one half of the product between the signal transfer rate of the first conductor and the velocity of light traveling through the dielectric. Thus, it is possible to reduce the signal waveform distortion along the transmission line.