Abstract: A method and system are provided for boosting power for a communications link between a base station and a user device, or user equipment, in a cellular communications network. In one embodiment, the communications link is a downlink between the base station and the user device established via a downlink channel having a full channel bandwidth including a number of sub-carrier frequencies. The base station determines whether a power boost is needed for a downlink to the user device. If so, the base station uses a subset of the sub-carrier frequencies from the full channel bandwidth as a reduced bandwidth channel, or sub-channel, for the downlink to the user device such that signal power is concentrated on the sub-carrier frequencies of the reduced channel bandwidth rather than spread across the sub-carrier frequencies of the full channel bandwidth. As a result, a power boost for the downlink is provided.

Abstract: A method and system are provided for boosting power for a communications link between a base station and a user device, or user equipment, in a cellular communications network. In one embodiment, the communications link is a downlink between the base station and the user device established via a downlink channel having a full channel bandwidth including a number of sub-carrier frequencies. The base station determines whether a power boost is needed for a downlink to the user device. If so, the base station uses a subset of the sub-carrier frequencies from the full channel bandwidth as a reduced bandwidth channel, or sub-channel, for the downlink to the user device such that signal power is concentrated on the sub-carrier frequencies of the reduced channel bandwidth rather than spread across the sub-carrier frequencies of the full channel bandwidth. As a result, a power boost for the downlink is provided.

Abstract: A multi-mode power amplifier includes a high-power mode amplifier circuit, a mid-power mode amplifier circuit, and a low power amplifier circuit, where the low-power mode amplifier circuit comprises a plurality of independently selectable power cell/amplifier branches. The multi-mode power amplifiers selectively enable or disable amplifier branches to provide multiple levels of amplification. Selectively enabling certain of a plurality of split collector amplifier branches provides multiple low power and ultra-low power amplifier modes without the impedance mismatch or board layout problems associated with an RF switch.

Abstract: A method to control adjustable power levels uses a network of attenuators that includes a fixed attenuation and a variable attenuation. The method adjusts the variable attenuation to approach the fixed attenuation, provides gain to an attenuated signal in an amount proximate to the fixed attenuation to generate a compensated signal, and compares power levels of a non-attenuated signal and the compensated signal to generate a first error signal. The method introduces the fixed attenuation and correspondingly reduces the variable attenuation to maintain a combined attenuation. The combined attenuation generates a modified compensated signal. The method measures a difference between the first power levels of the non-attenuated signal and the modified compensated signal to generate a second error signal, and generates a control signal as function of the first and second error signals to adjust the variable attenuation to reduce an attenuation mismatch introduced between the fixed and variable attenuations.

Abstract: A mobile electronic device comprises an RFID antenna section that sends and receives signals on a first useful frequency band, a main antenna section that sends and receives signals on a second useful frequency band, which is a higher frequency band than the first useful frequency band, an adjustment section that adjusts a resonance frequency of the RFID antenna section, and a control section that identifies a reactance value of the RFID antenna section based on the receiving sensitivity with respect to signals on the first useful frequency band and adjusts the resonance frequency of the RFID antenna section based on the identified reactance value by an adjustment section such that a high-order resonance frequency of the RFID antenna section is spaced apart from the second useful frequency band.

Abstract: A passively re-radiating cell phone sleeve assembly capable of receiving a nested cell phone provides signal boosting capabilities and provides a radar enablement. Signal boosting is enabled by use of an additional antenna, a pass-through repeater, dual antenna isolation capability and other features.

Abstract: A method for controlling output signal power in a communication terminal includes accepting, from first and second measurement points along a transmission chain in a transmitter of the terminal, respective first and second signal representations of a communication signal to be transmitted by the communication terminal. A cross-correlation is computed between the first and second signal representations accepted from the first and second measurement points. An actual gain between the first and second measurement points is computed using the cross-correlation. An output power of the communication signal is adjusted by setting a gain of the transmitter responsively to the actual gain.

Abstract: Methods and apparatus for estimating a loop delay value (Ndelay) in an interference cancellation repeater are presented. For example, a method may include setting a repeater gain to an initial gain value, setting a delay parameter to an initial time value, and measuring a loop gain associated with the delay parameter and the repeater gain by detecting a feedback signal with an echo canceller disabled. The method may further include determining whether the measured loop gain is larger than a previously measured loop gain, and if so, designating the delay parameter as the loop delay value (Ndelay); and decrementing the delay parameter when the measured loop gain is not larger than the previously measured loop gain, and when the delay parameter is not at a final time value. The method may iterate until the delay parameter is less than or equal to the final time value.

Abstract: A collaborative MIMO method using a sounding channel in a multi-cell environment is disclosed. The method includes acquiring, by a first base station providing a service for a first cell, first CSI of a first downlink channel between the first base station and a mobile station, transmitting, to a second base station, a signal including information requesting that the second base station providing a service for a second cell acquire second CSI of a second downlink channel between the second base station and the mobile station, and acquiring, by the second base station, the second CSI. The mobile station is served by the first base station.

Abstract: A mobile device comprising an antenna, a receiver coupled to the antenna, and a transmitter coupled to the antenna, wherein the receiver, the transmitter, or both comprise a low noise amplifier comprising an adjustable gain and a variable impedance controller, and wherein the low noise amplifier is configured to sink current and to adjust a shunt resistance substantially simultaneously. Included is a method comprising receiving an electrical signal, substantially simultaneously adjusting an input impedance and a gain factor, amplifying the electrical signal, thereby producing an amplified signal, and outputting the amplified signal.

Abstract: A portable accessory for preventing death grip of a hand-held apparatus and improving radio wave transmission and reception of the hand-held apparatus. The portable accessory includes an inductive signal amplifying circuit including: a radio transmission/radio unit that transmits or receives radio waves; a capacitive coupled unit that is capacitively coupled with an antenna mounted in the hand-held apparatus; and an impedance matching unit that connects the radio wave transmission/reception unit and the capacitive coupled unit and transmits radio waves.

Abstract: Embodiments for at methods, apparatus and systems for operating a voltage regulator are disclosed. One method includes generating, by a switching controller, a switching voltage through controlled closing and opening of a series switch element and a shunt switch element. Further, the method includes generating, by a switchable output filter, a regulated output voltage by filtering the switching voltage, wherein the switchable output filter comprises a plurality of capacitors that are selectively included within the switchable output filter.

Abstract: To provide for a movable electronic device a power receiving device that when charging a battery, simplifies charging of the battery from a power feeder, which is a power supply means, and does not have faults due to an external factor relating to a relay terminal, or damage of the relay terminal, that are caused by directly connecting the battery and the power feeder, and further, to provide an electronic device including the power receiving device. An antenna circuit and a booster antenna for supplying electric power are provided in a movable electronic device. The antenna circuit receives a radio signal such as an electromagnetic wave via the booster antenna, and electric power that is obtained through the receiving of the radio signal is supplied to the battery through a signal processing circuit.

Abstract: An exemplary MIMO transceiver includes a first transmitting channel and a second transmitting channel. The first transmitting channel includes a first power amplifier and a first transmission line which are connected together in series. The second transmitting channel includes a second power amplifier. A common terminal of a first single pole double throw (SPDT) switch is connected to the second power amplifier. A first terminal of the first SPDT switch is connected to the first power amplifier through a second transmission line. A common terminal of a second SPDT switch is connected to the second power amplifier. A first terminal of second SPDT switch is connected to the first power amplifier through a third transmission line. A second terminal of the second SPDT switch is connected to a second antenna. The first power amplifier, the second transmission line, and the third transmission line cooperatively act as a balance power amplifier.

Abstract: In an embodiment, a power amplifier (PA) includes a signal processing path including gain stages to receive a radio frequency (RF) signal and to output an amplified RF signal, sensors coupled to the signal processing path each to sense a characteristic of operation of the PA, and a microcontroller configured to execute instructions and to receive the operation characteristic(s) and to control one or more parameters of the signal processing path responsive this operation characteristic.

Abstract: The invention relates to a method and an arrangement for reducing power consumption of a receiver in a mobile communication network comprising a sender transmitting packet data on a downlink channel to one or more receivers over a radio interface. Inactive time instants and listening time instants are defined according to provided rules. The receiver is arranged to listen for information from the sender during the listening time instants and to sleep during the inactive time instants. Thus, less power will be consumed during the inactive time instants.

Abstract: An efficient way to store backoff and crestcomp parameters while providing quick access to the backoff and crestcomp parameters associated with specific transmission configurations is described herein. A long-term memory stores amplifier parameters for a plurality of different transmission configurations. A selection element selects from the long-term memory a graph of the amplifier parameters corresponding to a selected subset of the transmission configurations. The selected graph relates each of a plurality of enhanced data channel gain ratios to a corresponding amplifier parameter. The selection element transfers the selected graph from the long-term memory to a fast memory proximate a DSP. Further, the selection element reselects and transfers new graphs into the fast memory as needed.

Abstract: A method of increasing power amplifier linearity to facilitate in-device coexistence between wireless communication technologies is provided. The method can include determining a scheduled time period during which data is received by a device via a first wireless communication technology. The method can further include adjusting an operational parameter of a power amplifier applied to a transmission from the device via a second wireless communication technology to increase a linearity of the power amplifier during the scheduled time period.

Abstract: One embodiment of the present invention provides an automatic gain control (AGC) module for a wireless communication system that includes a plurality of amplifiers. The AGC module includes a receiving mechanism configured to receive an input that indicates a total amount of gain adjustment; a collecting mechanism configured to collect a number of parameters associated with the amplifiers; a determining mechanism configured to determine a desired performance requirement; a gain-control engine configured to generate a gain profile for the amplifiers based on the collected parameters, the total amount of gain, and the desired performance requirement; and an output mechanism configured to output a plurality of control signals based on the generated gain profile, wherein a respective control signal independently controls gain of a corresponding amplifier, thereby enabling the wireless communication system to achieve the total amount of gain adjustment while meeting the desired performance requirement.

Abstract: A system for power amplifier control saturation detection and correction includes a comparator configured to receive a power control signal and a detected power signal and generate a regulated voltage, a power amplifier configured to receive the regulated voltage and develop an output power, a power detector configured to sense the output power and develop the detected power signal, a saturation detector configured to receive the regulated voltage and a system voltage and determine whether the power amplifier is operating in a saturation mode during a transmit burst, and a current generator configured to reduce the power control signal when the power control signal exceeds a predetermined value and after expiration of a predetermined period of time, preventing the power control signal from exceeding the detected power signal.

Abstract: A mobile terminal including a display unit; a first power source configured to supply a first power; a first control unit configured to control operations of the mobile terminal; and an attaching mechanism configured to receive a detachable e-paper kit including e-paper, a second power source configured to supply a second power, and a second control unit configured to control operations of the e-paper kit. Further, when the e-paper kit is attached to the mobile terminal via the attaching mechanism, the first control unit is configured to control the display unit to display first information via the first power supplied by the first power source, and the second control unit of the e-paper kit is configured to control the e-paper to display second information via the second power supplied by the second power source.

Abstract: A multi-mode power amplifier includes a high-power mode amplifier circuit, a mid-power mode amplifier circuit, and a low power amplifier circuit, where the low-power mode amplifier circuit comprises a plurality of independently selectable power cell/amplifier branches. The multi-mode power amplifiers selectively enable or disable amplifier branches to provide multiple levels of amplification. Selectively enabling certain of a plurality of split collector amplifier branches provides multiple low power and ultra-low power amplifier modes without the impedance mismatch or board layout problems associated with an RF switch.

Abstract: An envelope tracking amplifier for a transmitter has a voltage mapping linearly related to the square of the amplitude of the baseband signal.

Abstract: A charging station for mobile devices that acts as an intermediary device to facilitate communication between mobile devices and other proximate devices. The charging station may receive data with a mobile device via a first communication protocol (e.g., Bluetooth) or in a first data format and may transmit the received data to a proximate device via a second communication protocol (e.g., WiFi) or in a second data format. The charging station may then receive responsive data from the proximate device via the second communication protocol (e.g., WiFi) or second data format and transmit the responsive data the mobile device via the first communication protocol (e.g., Bluetooth) or first data format. In some embodiments, the charging station may communicate status data about a mobile device to other proximate devices.

Abstract: A system includes a voltage regulator connected to a voltage source for providing a regulated voltage at a first level in a first mode of operation and at least one second level in a second mode of operation. The second voltage level is higher than the first voltage level. A control processor provides control signals to select between the first and the second modes of operation. A component associated with the voltage regulator. The component is disabled in the first mode of operation and enabled in the second mode of operation. The control processor generates control signals to configure the voltage regulator to generate the voltage at the first level in the first mode of operation when the component is disabled and to configure the voltage regulator to generate the voltage at the at least one second level in the second mode of operation when the component is enabled.

Abstract: A predistorter includes a distortion compensating unit which gives, in advance, a reverse characteristic of a characteristic of input to output of a power amplifier to a transmission signal which is to be input to the power amplifier; a distortion compensation signal generating unit which generates a distortion compensation signal indicating the reverse characteristic based on transmission data that is sample data of the transmission signal and the delayed transmission data; and a delay amount control unit which controls a delay amount of the transmission data according to an output signal of the power amplifier.

Abstract: A method for controlling output signal power in a communication terminal includes determining envelopes of a communication signal to be transmitted by the communication terminal at respective first and second measurement points along a transmission chain in a transmitter of the terminal. A cross-correlation is computed between the envelopes determined at the first and second measurement points. An actual gain between the first and second measurement points is computed using the cross-correlation. An output power of the communication signal is adjusted by setting a gain of the transmitter responsively to the actual gain.

Abstract: An apparatus for wirelessly transmitting electric currents walls. The walls may be bulkhead compartment walls of a fixed structure or a vehicle or the like. The apparatus includes a wireless electric power transmission arrangement that includes an electronic device on one side of a wall, which is powered by a power source on another side of the wall. The electronic device may be a sensor arrangement having one or more sensors, a battery charging device, a through-the-bulkhead repeater device or other electronic device requiring power.

Abstract: An amplifier includes a first lower active sub cell and a second lower active sub cell, each comprising an input terminal and an output terminal, wherein the input terminals of the lower active sub cells are connected to the amplifier input and the output terminals of the lower active sub cells are not shorted. Furthermore, the amplifier includes a first upper active sub cell and a second upper active sub cell, each including a biasing terminal, wherein the input terminals and the output terminals of the upper active sub cells are coupled between the output terminals of the lower active sub cells and the amplifier output. The amplifier includes a bias controller configured to provide a first biasing signal to the first upper active sub cell and a second biasing signal to the second upper active sub cell based on an output power of the output signal.

Abstract: An apparatus and method for matching antenna impedance in a mobile station are provided. In implementation, a mobile station receives power control information including information for controlling transmit power of the mobile station, generates matching control information for antenna impedance matching based on the received power control information, and performs antenna impedance matching depending on the generated matching control information.

Abstract: Some embodiments of the present disclosure relate to transmission techniques that result in power savings relative to previous solutions. These techniques often transmit a signal-of-interest by using two paths, namely, a transmission path (which includes a power amplifier) and a control path. The signal-of-interest is evaluated in “fast-track” fashion on the control path, such that the control path can “tune” a DC supply signal provided to the power amplifier. Thus, when a delayed version of the signal-of-interest is provided over the transmission path to the power amplifier, the DC supply signal provided to the power amplifier helps ensure that the power amplifier has “just enough” DC supply to ensure reliable operation without dissipating excess power. In this way, the techniques disclosed herein help to reduce power consumption in transmitters, thereby potentially helping to extend battery life and reduce undesired heating for users.

Abstract: A mobile wireless communications device includes a housing and circuit board in the housing and having radio frequency (RF) circuitry and a power amplifier and microphone mounted thereon. An antenna is carried within the housing and operative with the RF circuitry. An RF shield surrounds and isolates the microphone from the RF circuitry, power amplifier and antenna and shields the microphone from radiated energy generated from the RF circuitry, antenna or power amplifier.

Abstract: A control unit monitors a current value measured by a power control unit and a type of application program being executed, and executes a reset process or a power-off process when the current value measured by the power control unit exceeds a current threshold value corresponding to the type of application program currently being executed.

Abstract: A wireless communication system is disclosed herein. The wireless communication system may include transmitter units and a receiver. In one embodiment, each transmitter has an address and logic programmed to perform the steps of receiving a user selection and, responsive to the receiving, repeatedly transmitting a wireless selection signal until a wireless acknowledgment signal is received. The wireless selection signal may include the address and the user selection. The receiver may include means to receive a wireless selection signal and logic programmed to transmit a wireless acknowledgment signal in response to the receipt of each wireless selection signal.

Abstract: An adaptive inductive ballast is provided with the capability to communicate with a remote device powered by the ballast. To improve the operation of the ballast, the ballast changes its operating characteristics based upon information received from the remote device. Further, the ballast may provide a path for the remote device to communicate with device other than the adaptive inductive ballast.

Abstract: Techniques to manage a subscriber identity module for a mobile wireless device are described. An apparatus may comprise a mobile computing device having a subscriber identity module (SIM) manager that when executed by a processor is operative to manage a physical SIM stored on a removable storage unit for the mobile computing device and a virtual SIM stored on a non-removable storage unit for the mobile computing device, the virtual SIM comprising contents copied from the physical SIM to allow the virtual SIM to perform operations on behalf of the physical SIM. Other embodiments are described and claimed.

Abstract: A transmitting apparatus that converts a transmission digital signal to a high-frequency analog signal and transmits the high-frequency analog signal using a plurality of transmission frequencies, the transmitting apparatus including: a dividing unit that divides a transmission signal sequence into a plurality of blocks; a sub-block generating unit that applies pre-coding processing to the blocks and further divides the blocks after the pre-coding processing into sub-blocks; a frequency allocating unit that generates a frequency signal in which the sub-blocks are allocated to the transmission frequencies; and an inverse DFT processing unit that transforms the frequency signal into a time signal, wherein the transmitting apparatus sets the time signal as the transmission digital signal.

Abstract: A signal boosting and charging system for charging personal electronic devices without an electrical outlet and boosting signals for the personal electronic communication device. The system features a signal booster housed in a signal booster base, a support base, and a solar base. Together, the signal booster base, support base, and solar base form a triangular configuration as viewed from a side to prop up the signal booster base. The system also features solar cells on the solar base for providing power. The system also features an antenna operatively connected to the signal booster. The system may feature one or more USB ports and/or a phone jack.

Abstract: A mobile phone which is an example of electronic equipment includes a processor, and when a PTT conversation is started, in the processor, a DSP starts an input and an output under instructions by a control circuit. The processor (control circuit) keeps stopping an output from an amplifier provided at a preceding stage of a speaker, if and when a floor is gotten by a user himself/herself. On the other hand, if and when a floor is gotten by any other person, the processor starts the output of the amplifier, and stops the output when the floor is released by the other person.

Abstract: Described is a technology in which Bluetooth® devices, e.g., navigation devices, are enhanced with additional power amplification to allow long range radio communication links between moving vehicles and/or between moving vehicles and roadside hubs. In one example, collection and dissemination of traffic information, including aggregation and filtering, is facilitated via a Bluetooth® vehicle-to-vehicle and/or vehicle-to-roadside hub ad-hoc network. Also described is efficient connection establishment and data transfer for vehicle to vehicle and vehicle-to-roadside hubs via the enhanced Bluetooth® radio. The ad-hoc network comprising a mesh of vehicles/a supernode also facilitates the exchange of information that originated at an Internet source.

Abstract: A conventional UE in a radio system based on LTE may be boosted for use in an extended geographical cell provided by an eNodeB. The booster may be connected to the UE in various ways which minimise the changes required to an otherwise standard UE device. The booster is activated by control signals from the UE, or by an internal switch, or by a power detector for example. Power headroom reports by the UE to the eNodeB are correct within the larger cell.

Abstract: A mobile wireless communications device may include a portable housing, and a supply modulator carried by the portable housing. The supply modulator may include an output node, a linear amplifier coupled to the output node, and a switching amplifier also coupled to the output node. The switching amplifier may include at least one sensing transistor configured to sense current output from the linear amplifier and generate a drive voltage, and a hysteretic comparator coupled to the at least one sensing transistor and configured to be driven by the drive voltage. The mobile wireless communications device may also include a radio frequency (RF) power amplifier coupled to the output node of the supply modulator, and a wireless transceiver carried by the portable housing and coupled to the RF power amplifier.

Abstract: An electronic device may include antenna structures. Wireless transmitter circuitry such as cellular telephone transmitter circuitry and wireless local area network circuitry may transmit signals using the antenna structures. A wireless receiver may receive signals from the antenna structures through an adjustable-linearity amplifier. The wireless receiver may operate in a receive band such as a satellite navigation system receive band. During operation of the electronic device, control circuitry in the device may analyze the frequencies and powers of the transmitted signals to determine whether there is a potential for interference for the receive band to be generated in the adjustable-linearity amplifier. In response to determining that there is a potential for interference, the control circuitry may increase the linearity of the adjustable-linearity amplifier.

Abstract: Different components in a wireless transceiver are powered using different power supplies. For example, one or more first tasks in the wireless transceiver can be powered with a Galvanic cell, and one or more second tasks in the wireless transceiver can be powered with a fuel cell. The one or more first tasks could represent higher-current or intermittent tasks, and the one or more second tasks could represent lower-current or continuous tasks. The one or more first tasks could include transmission of a radio frequency (RF) signal, which may involve RF signal modulation or RF signal amplification. The one or more second tasks could include RF signal tuning, RF signal reception, RF signal demodulation, analog-to-digital conversion, digital-to-analog conversion, digital signal processing, operation of a controller, illumination of a display, operation of an audio speaker, operation of a microphone, or operation of a keypad.

Abstract: Devices and methods are provided for providing wireless coverage redundancy in case, for example, the backhaul of an access point (AP) base station is not available. In one embodiment, the method involves monitoring the backhaul, and in response to the backhaul being available, facilitating communication between an access terminal (AT) and the macro network via the backhaul. In addition, or in the alternative (e.g., when the backhaul is not available), a communication signal between the AT and a macro base station (or another AP base station) may be boosted.

Abstract: A mobile terminal is controlled via over-the-air feedback so as to enable its data transmissions to be independently and successfully decoded at each of the base stations in its active set absent a transmit power limitation or data retransmission limit. Using the decoded data, the channel is re-estimated and the waveform received from the mobile terminal is reconstructed and subtracted from the total interference at each base station in the active set where decoding has been successful. As a result, transmissions from other mobile terminals, which have yet to be successfully decoded at such a base station, will experience a higher signal-to-noise ratio and thus an increased likelihood of being successfully decoded.

Abstract: The embodiments of the present disclosure provide a power sharing method and a base station, wherein the method comprises: according to a power demand of the communication systems of at least one mode among communication systems of different modes sharing a power amplifier, determining whether to perform power sharing among communication systems of different modes; if it is determined to perform power sharing among communication systems of different modes, adjusting an available power of communication systems of one or more modes therein. According to the embodiments of the present disclosure, when it is determined to perform the power sharing according to the power demands, power sharing is performed among communication systems of different modes, thereby realizing dynamic and flexible power sharing among communication systems of at least two modes.

Abstract: An electronic device such as a portable electronic device may have an antenna and associated wireless communications circuitry. A sensor such as a proximity sensor may be used to detect when the electronic device is in close proximity to a user's head. Control circuitry within the electronic device may be used to adjust radio-frequency signal transmit power levels. When it is determined that the electronic device is within a given distance from the user's head, the radio-frequency signal transmit power level may be reduced. When it is determined that the electronic device is not within the given distance from the user's head, proximity-based limits on the radio-frequency signal transmit power level may be removed. Data may be gathered from a touch sensor, accelerometer, ambient light sensor and other sources for use in determining how to adjust the transmit power level.

Abstract: A mobile terminal including a transceiver having a plurality of output terminals; a plurality of power amplifier units respectively connected to the plurality of output terminals, and configured to amplify a first or second signal output by the output terminals and to output the amplified first or second signal to a plurality of antennas respectively connected the plurality of power amplifiers; and a receiving module configured to receive a third signal through a receiving antenna disposed to be spaced apart from the plurality of antennas and to output the received third signal to the transceiver. Further, the receiving module includes first and second filters configured to control an intermodulation distortion (IMD) signal included in the third signal due to the output of the first or second signal.

Abstract: It is an object of the present invention to facilitate charge of a battery of a wireless communication device. In addition, it is another object of the present invention to provide a wireless communication device capable of transmitting and receiving individual information without battery replacement which is required due to the power consumption of a battery. A wireless communication device includes a plurality of antenna circuits and a plurality of batteries electrically connected to any one of the plurality of antenna circuits through a switch, where the plurality of batteries are each electrically connected to a different circuit, the plurality of antenna circuits receive electric waves so that the plurality of batteries electrically connected to the plurality of antenna circuits are charged, and at least one of the plurality of antenna circuits receives an electric wave having a different frequency.