Abstract: A method is performed for a signal transmitted by an RFID interrogator being a radiofrequency electromagnetic sine wave. An amplitude noise contribution RSdAN to a demodulated received signal RSd within a frequency interval of a low-pass filter is determined by means of a measured demodulated transmitted signal TSd as RSdAN=k.TSd in that a dc component DCRS in said demodulated received signal RSd and a dc component DCTS in said demodulated transmitted signal TSd are measured and a conversion factor k is determined as k=DCRS:DCTS. A receiver output signal O is continuously generated out of the received signal by subtracting said amplitude noise contribution RSdAN from the demodulated received signal RSd, filtering the cleaned signal RSd-k.TSd by the low-pass filter and amplifying it. The conversion factor is determined in an exceptionally simplified way as said ratio of said dc components. No receiving interruptions are needed.

Abstract: A generator and method for tuning the generator are disclosed. The method includes setting the frequency of power applied by the generator to a current best frequency and sensing a characteristic of the power applied by the generator. A current best error based upon the characteristic of the power is determined, and the frequency of the power at the current best frequency is maintained for a main-time-period. The frequency of the power is then changed to a probe frequency and maintained at the probe frequency for a probe-time-period, which is less than the main-time-period. The current best frequency is set to the probe frequency if the error at the probe frequency is less than the error at the current best frequency.

Abstract: A mixer included in a receiver of a wireless communication system is provided. The mixer includes a switching unit including a plurality of transistors receiving a Radio Frequency (RF) signal and a Local Oscillation (LO) signal, and outputting a baseband signal, and a voltage controller outputting a voltage control signal controlling a body voltage of at least one transistor from among the plurality of transistors to thereby control a threshold voltage of the at least one transistor.

Abstract: A method for selecting a multi-antenna transmission mode of an electronic device is provided. The method includes determining, by using a detection signal from a sensor, whether there is a contact with a human body, changing a second transmission mode to a first transmission mode when there is a contact with a human body that affects the electromagnetic field around an antenna, and transmitting the same data stream through at least two antennas according to the first transmission mode.

Abstract: An apparatus and a method for Direct Current (DC) offset calibration in a signal transmission device of a wireless communication system are provided. The apparatus includes a first DC calibration unit for removing a DC offset from a signal, which is output from a Current-to-Voltage Converter (IVC), by using a first DC calibration value, a Variable Gain Amplifier (VGA) for amplifying the signal output from the IVC, a second DC calibration unit for removing a DC offset from a signal output from the VGA by using a second DC calibration value, a Low Pass Filter (LPF) for filtering the signal output from the VGA, a third DC calibration unit for removing a DC offset from a signal output from the LPF by using a third DC calibration value, and a controller for determining the first DC calibration value, the second DC calibration value and the third DC calibration value.

Abstract: A rotary control (120) is illuminated through a controlled illuminated indicator provided by a light guide arc reflector (114) disposed on a control panel (104) along an outer periphery of a rotary control knob (112). The controlled illuminated indicator concurrently indicates status and location of the rotary control knob. The controlled illuminated indictor generates an increased rotational arc of illumination in response to the knob being rotated in a first direction and generates a decreased rotational arc of illumination in response to the knob rotated in a second direction. The rotary control (120) utilizes a helix slider (304) to control upwards and downwards movement of a reflector shield (302) which block and unblocks light rays in response to the knob (112) being rotated.

Abstract: Methods and apparatus are provided for managing interference in a wireless backhaul network comprising a plurality of hubs, each hub serving a plurality of remote backhaul modules (RBM), using power control with a one-power-zone (OPZ) constraint. Each hub uses a transmit frame structure comprising a plurality of zones, each RBM is scheduled on a different zone, and the same power level is maintained across all zones within a transmit frame. Under the OPZ constraint, and for scheduling policies under which the number of zones assigned to each RBM is fixed, the power and scheduling sub-problems are decoupled. This enables power control independent of scheduling, using methods having lower computational complexity. Methods are disclosed comprising iterative function evaluation or Newton's method approaches based on a weighted sum-rate maximization across the network, which can be implemented in a distributed fashion. Some of the methods can be implemented asynchronously at each hub.

Abstract: System and method for calculating a transmitter beamforming vector related to a channel vector h under per-antenna power constraints combined with total power constraint, under per-antenna power constraints combined with overall line of site (LOS) effective isotropic radiated power (EIRP) and under all three constraints. Calculating a transmitter beamforming vector may be done in the transmitter, in the receiver and feedback to the transmitter or in both. The method may be adapted to perform with a multi-antenna receiver and with multi-carrier systems.

Abstract: A method for transmitting wireless audio streams in an audio system comprising a first transmitter unit, the method includes: transmitting a first audio block in a first audio frame, the first audio block comprising a first primary audio package having a transmitter unit address of the first transmitter unit; transmitting a first primary pilot package, the first primary pilot package comprising the transmitter unit address of the first transmitter unit, a first primary time offset, and a channel identifier of a first primary audio package of a second audio block in a second audio frame; and transmitting the first primary audio package of the second audio block at a start time depending on the first primary time offset and the channel identifier.

Abstract: To provide the case for an electronic device where the device is equipped with the camera and the flash that are adjacent to each other. The case has at least one hole in the case body to expose the camera and the flash. The camera hole has a depth and is formed by a cylindrical wall, and the shading area is provided on the hole wall.

Abstract: Techniques, devices, and systems that include mechanisms for network assisted fast adjustment of open loop power control mechanism. monitoring reverse link channels include calculating, based on results of the monitoring, an initial power adjustment value for controlling power of a wireless device in communication with the network and broadcasting the initial power adjustment value over a forward link control channel at least as often as a paging channel transmission cycle over the forward link control channel.

Abstract: Disclosed are circuits and methods for reducing insertion loss effects associated with radio-frequency (RF) power couplers. In some implementations, an RF circuit can include a first path configured to route a first RF signal in a first band, and a second path configured to route a second RF signal in a second band. The RF circuit can further include a power detector having a first coupler configured to detect power along the first path, and a second coupler configured to detect power along the second path. The first coupler and the second couplers can be connected in a daisy-chain configuration. The RF circuit can further include an adjustment circuit implemented along at least one of the first path and the second paths. The adjustment circuit can be configured to move a frequency response feature associated with the power detector to a different frequency range.

Abstract: Two or more base stations among a plurality of base stations transmit data of the same content at the same timing. A base station notifies a mobile station of two or more base stations which transmit the data of the same content among the plurality of base stations. The mobile station transmits information indicating reception conditions in the mobile station of radio signals from the base stations notified of, to the base station. According to the information indicating the reception conditions, the base station instructs the mobile station to receive the data of the same content from the base stations.

Abstract: An envelope tracking power supply and an offset capacitive element are disclosed. The offset capacitive element is coupled between a switching output and an analog output of the envelope tracking power supply, which operates in one of an envelope tracking mode, a transition mode, and an average power tracking mode. During the envelope tracking mode, the envelope tracking power supply provides an envelope power supply signal using both the switching output and the analog output. During the transition mode, the envelope tracking power supply drives a voltage across the offset capacitive element from a first voltage to a second voltage, such that during a transition from the envelope tracking mode to the transition mode, the offset capacitive element has the first voltage, and during a transition from the transition mode to the average power tracking mode, the offset capacitive element has the second voltage.

Abstract: A method and apparatus receiving wireless signals and generating an output signal and diagnostic information therefrom is disclosed. Each of the plurality of wireless signals comprises video information and is characterized by a wireless frequency band, polarization, and apparent spatial direction, and the output signal comprises the video information of any the plurality of wireless signals, frequency translated to one of a plurality of stacked output signal frequency bands.

Abstract: A method is provided that enhances the throughput of data broadcasts in a multi-beam satellite communication system by taking advantage of target users whose normal environment or equipment provide a better channel performance than that of the nominal environment or equipment for which the system is tuned, which enables a larger coverage area per beam than the nominal design supports. A system is provided that operates the method. A preferred embodiment is described using the Iridium Mobile Satellite Service (MSS) system as a basis.

Abstract: A mobile device case is formed with a hollow case housing for receiving a mobile device and controlling a mobile device camera therein. The mobile device includes a case connector for electronically connecting the case to the mobile device at insertion of the mobile device into the hollow case housing and at least one camera control actuator for controlling operation of the mobile device camera, when the mobile device is present in the hollow case housing. The hollow case housing comprises a first housing section and a second housing section that comes together by respective tongue and groove elements to thereby encapsulate the mobile device.

Abstract: The present invention provides a mechanism for recording only a received radio signal conforming to recording conditions and discarding a received radio signal not conforming to the recording conditions.

Abstract: A communication apparatus includes transmission circuitry and a frequency conversion unit. The transmission circuitry is configured to down-convert an input Intermediate Frequency (IF) signal using a transmit (TX) Local Oscillator (LO) signal so as to produce a TX baseband signal, to up-convert the TX baseband signal to produce an output Radio Frequency (RF) signal, and to send the output RF signal to an antenna. The frequency correction unit is configured to estimate a frequency of the TX baseband signal or of the input IF signal, and to adjust the TX LO signal based on the estimated frequency so as to cause the transmission circuitry to down-convert the input IF signal to a predefined target frequency.

Abstract: Systems and methods which utilize low performance circuitry to provide received signal power detection without unacceptably impacting operation of a receiver circuit are shown. Circuitry utilized to provide received signal power detection according to embodiments comprises circuitry dedicated for use with respect to received signal power detection. Performance of the circuitry of the detection path may be lower than that required of circuitry of the signal processing path. However, performance parameters are selected to provide power detection of desired accuracy (e.g., flat gain) and to meet other performance metrics. Embodiments provide a low performance power detection circuit comprising a low performance tuner configuration. Further embodiments provide a low performance power detection circuit comprising a low performance data converter configuration.