Abstract: A method for power measurement includes applying a nonlinear function to a Radio Frequency (RF) signal that includes a modulated component and a spurious component, so as to produce a broadband signal that includes a Direct-Current (DC) component, a baseband component and one or more High-Frequency (HF) components. The broadband signal is Band-Pass (BP) filtered so as to produce a bandpass signal from which the DC and HF components are removed. Based on the bandpass signal, a power of the modulated component in the RF signal is estimated irrespective of the spurious component.

Abstract: A base station includes: an estimation section estimating transmission condition of each of frequency channels used for communication; a reception section receiving a data signal from each communication terminal through any of the frequency channels; a measurement section measuring received signal power of the received data signal for each frequency channel; a determination section determining, for each frequency channel, whether the received data signal is demodulated errorlessly; and a control section assigning frequency channels estimated as being in good transmission condition by the estimation section, to communication terminals the data signals of which are determined as not being errorlessly demodulated by the determination section, such that a frequency channel in a better transmission condition is assigned preferentially to a communication terminal having larger received signal power detected by the detection section, and transmitting retransmission request signals requesting the communication termin

Abstract: A communication device for communicating with an external device using a human body as a signal transmission path, includes an electric field strength measuring unit configured to measure a noise level from a detected received electric field strength at the time of no signal after the received electric field strength is detected by the communication device when a transmission signal to be output to the external device is absent, a transmission output determination unit configured to determine an output level of the transmission signal to be transmitted to the external device on the basis of the measured noise level, and an output execution unit configured to output a transmission signal of the determined output level to the external device.

Abstract: A transmitter, when the power changes at a certain timing, adjusts the gain for the transmission signal before the application of the distortion compensation process correspondingly to the amplitude of the transmission signal at the certain timing based on the average of the power of a transmission signal before application of the distortion compensation process, obtains a distortion compensation coefficient corresponding to the value of the power of the adjusted transmission signal from the LUT, applies the distortion compensation process to the transmission signal using the obtained distortion compensation coefficient, calculates an update for a distortion compensation coefficient corresponding to the obtained distortion compensation coefficient and stored in the LUT based on an error between the power of the transmission signal amplified by an amplifier and the power of the transmission signal before the application of the distortion compensation process, and updates the LUT using the calculated update.

Abstract: Methods and apparatus enabling a wireless network to implement efficient and robust paging channel operation. In one aspect, the invention permits recovery of a paging channel after a virtual connection failure. A virtually connected UMTS cellular phone that misses a paging notification will no longer be synchronized with its serving radio network, and the resultant loss of synchronization causes a service “blackout” until the devices are resynchronized. Accordingly, in one embodiment, a virtually connected cellular device continuously monitors for fallback messaging, greatly expediting detection and correction of a virtual connection failure. In another embodiment, a virtually connected base station which is unable to page a cellular device in a virtually connected mode continues paging in both virtual connection and fallback modes, thereby provoking an immediate response from the cellular device.

Abstract: A system and method for measuring transmission power distortion in a wireless communication device are disclosed. In one embodiment, the method comprises reading an operating temperature of the wireless communication device and enabling a loopback path between a transmission circuit and a receiver circuit of the wireless communication device. Using the loopback path, the wireless communication device can calibrate the transmission power output by storing data for compensating the distortion of the transmission power. The data can be stored in a calibration look up table for use by the wireless communication device.

Abstract: A mobile communication environment (100) can include a mobile device (160) to measure and send sound pressure level data. The mobile device (160) can initiate the collection of audio information responsive to detecting a trigger event. Mobile device (160) can measure or calculate the sound pressure level from the audio information. Metadata including time information and geographic location information can be captured with the collected audio information. Mobile device (160) can send the sound pressure level data and metadata through a wired or wireless communication path to a database (614).

Abstract: An improved communication system and method employing an actively controlled antenna array architecture is disclosed. The array contains a plurality of driven radiating elements that are spatially arranged having a pair of radiating elements fed with an RF signal predistorted so as to provide a controlled variation of the antenna array's elevation radiation pattern. High power amplifier (PA) efficiency is maintained by adaptive predistortion, coupled to each high power PA, while providing beam tilt and side lobe control.

Abstract: A communication device includes a transmitter and a receiver. The receiver mixes a local oscillator (LO) signal with the received signal to downconvert the received signal to an intermediate frequency (IF). The LO path that feeds the LO signal to the downconverting mixer is controlled based on the transmit power of the transmitter. For high transmit power, the drive of the LO path is increased, thereby increasing the signal-to-noise ratio of the LO signal input into the mixer. For low transmit power levels, the drive to the LO path is decreased, reducing power consumption in the communication device. In this way, receiver path noise due to mixing of the LO phase noise with the self-generated transmitter signal is selectively controlled while incurring lower power consumption penalty. The communication device may be an access terminal configured for communication with a cellular radio network.

Abstract: Systems, methods, apparatus, processors and computer-readable media include a radiated testing module that executes a predetermined radiated performance test on a wireless device. The test dictates various performance-related parameters to measure and log at each of a plurality of predetermined positions. Further, the wireless device receives synchronization information operable to enable synchronization between the logged measurements and each of the positions. The synchronized log allows the wireless device, or another apparatus, to determine a radiated performance characteristic based on a predetermined analysis protocol. Further, the described embodiments allow for the determination of several radiated performance characteristics in a single test, using a single, unaltered wireless device.

Abstract: An embodiment of the present invention provides an apparatus, comprising a transceiver, an antenna tuner connecting said transceiver to an antenna, a power sensor adapted to acquire measurements about transmit power, a receive signal strength indicator (RSSI) adapted to acquire measurements about receive power and wherein said tuner tunes said antenna based upon said transmit and receive measurements to optimize said antenna in both the receive and transmit bands.

Abstract: A reception device which communicates with a transmission device including multiple transmission antennas, the reception device including: at least one reception antenna which receives multiple transmission signals transmitted by the transmission device from the multiple transmission antennas; a propagation channel response estimation unit which estimates propagation channel responses among the multiple transmission antennas and the reception antenna; a block division unit which divides a reception signal of at least one of the reception antennas into multiple blocks based on a multipath; and a transmission signal detection unit which detects the transmission signals transmitted by the transmission device based on the reception signal divided by the block division unit into the multiple blocks and the propagation channel responses estimated by the propagation channel response estimation unit. The transmission signal detection unit includes: an interference cancellation unit and a signal separation unit.

Abstract: A network device includes a first feedback module and a first calibration module. The first feedback module selectively generates a first transmission schedule that is transmitted to a link partner, wherein the first transmission schedule includes a first matrix map. The first calibration module selectively transmits a first set of training signals to the link partner, receives a first set of channel state information (CSI) for the training signals from the link partner according to the first transmission schedule, and generates a first CSI matrix based on the first set of CSI and the first matrix map.

Abstract: Mapping signal strength. A signal strength monitor is polled to measure signal strength. Each polled signal strength is associated with an associated geographical position. The signal strength and the associated geographical position is stored in memory. The stored signal strength and the stored associated geographical position is sent to a server. A coverage map of a geographical area is generated based on the stored signal strength and the associated geographical position in memory.

Abstract: The method relates to a method of characterizing a radio link. In the method, a radio frequency interrogator and a first radio frequency transponder, the response of which in an essentially anechoic chamber is known, are utilized. According to the invention, the response of the first radio frequency transponder is measured in a target environment in the chosen interrogator-transponder geometry and the responses of the radio frequency transponder in the target environment and in an essentially anechoic chamber are compared for characterizing the actual radio link. The invention provides information on multi-path propagation of radio waves characteristic to the target environment, which can be further taken into account in, for example, RFID system design.

Abstract: Certain aspects of a method and system for processing signals in a communication system may include maximizing system capacity for a time division duplex (TDD) multiple-input multiple-output (MIMO) system, based on reducing a search range within which to find a group of signals having maximum channel gain. At least one of: a first signal for a first user and a second signal for a second user may be selected, which are both within the reduced search range, and which provides a maximum system capacity. The first signal for the first user may be selected from the reduced search range corresponding to a channel gain that is greater than a channel gain corresponding to a remaining portion of the reduced search range. The reduced search range may be generated by sorting a plurality of signals based on a channel gain corresponding to each of the plurality of signals.

Abstract: A method and apparatus for controlling power of a transmitter in a mesh network. A controller, if it sets a reference power to one of a first measured transmission power and a maximum power, compares the reference power with a first power in level, and compares the first power with a second power in level. A cumulation factor calculator calculates a cumulation factor by comparing the first power with the second power. A reference power setter sets the reference power according to a scope to which a value obtained by adding a reference power to a sum of the calculated cumulation factors belongs. A power controller controls transmission power according to the set reference power.

Abstract: A method is provided for receiving a signal, corresponding to a data signal transmitted by a transmitter to a receiver via a transmission channel. The method includes the following steps: analyzing the signal received, delivering an information item representative of the transmission channel; determining, periodically and/or as a function of a variation of the transmission channel: at least one distribution of the transmission antennas into at least one group of at least one antenna as a function of the information item representative of the transmission channel, wherein at least one group includes at least two transmission antennas for at least one of the determinations; and specific efficiencies assigned respectively to each of the groups of antennas for each distribution as a function of the information item, and transmitting to the transmitter a parameterization signal defining the at least one distribution and the specific efficiencies.

Abstract: A method including: processing at a first processing frequency, such that each instance of processing is separated by a first processing time period, at least a first signal; increasing the processing frequency to a second processing frequency and switching from processing the first signal to processing a second signal; determining a parameter indicative of the quality of the second signal; and determining, within the first processing time period measured from the last instance of processing the first signal at the first frequency, which one or more signals to process at the next instance of processing by comparing respective parameters of at least the first and second signals.

Abstract: A directional pattern table memory stores combined directional pattern groups in each of which combined directional patterns are ordered by different predetermined priority according to a different radio propagation environment. A controller computes a communication performance expected value based on RSSIs for when an initial combined directional pattern is set on steerable antenna apparatuses; selects one combined directional pattern group based on relative strengths of RSSIs; and according to the priority, sequentially sets combined directional patterns of the selected one combined directional pattern group, on the steerable antenna apparatuses, computes a communication performance value based on a PHY rate and a PER at each of sequential settings, and performs communication using a combined directional pattern with a communication performance value that first exceeds the communication performance expected value.

Abstract: There is provided a method of method of estimating a quality of a signal, the method in a first device comprising measuring a signal transmitted from a second device to a third device; determining a value of a metric from an autocorrelation function of the measured signal; and determining an estimate of the quality of the signal from the determined metric.

Abstract: A system for detecting power output of a power amplifier includes a first power detector configured to detect a forward power output of a power amplifier, the first power detector configured to provide a first power detector output, and a second power detector configured to receive a collector parameter signal and detect a collector parameter therefrom, the second power detector also configured to provide a second power detector output.

Abstract: There are provided measures for cell search and synchronization. Such measures may exemplarily comprise acquiring an observation signal for a carrier signal on a carrier which is under consideration for synchronization with a desired cellular system, calculating a power measure of the observation signal, which indicates a received power of said carrier signal, calculating a non-circularity measure of the observation signal, which indicates a non-circularity of said carrier signal, and calculating a ranking measure, which indicates an applicability of said carrier for synchronization with the desired cellular system, based on the calculated power measure and the calculated non-circularity measure.

Abstract: A radio terminal 10 transmits, to a base station 100, uplink scheduling information including at least a transmission power ratio (UPH) indicating a ratio of a maximum transmission power to a transmission power of a DPCCH. The base station 100 transmits, to the radio terminal 10, transmission rate decrease data that instructs a decrease of a transmission rate assigned to the radio terminal 10, when the transmission power ratio included in the uplink scheduling information is below a first threshold.

Abstract: One or more beamsteering matrices are applied to one or more signals to be transmitted via multiple antennas. After the one or more beamsteering matrices are applied to the one or more signals, the plurality of signals is provided to a plurality of power amplifiers coupled to the multiple antennas. Signal energies are determined for the plurality of signals provided to the plurality of power amplifiers, and relative signal energies are determined based on the determined signal energies. Output power levels of the plurality of power amplifiers are adjusted based on the determined relative signal energies.

Abstract: A method is disclosed for calculating a distance to objects or a nearest object to a wireless enabled device. The method includes the steps of broadcasting a signal by the wireless enabled device to data tags, receiving by the data tags the signal by the wireless enabled device, and obtaining by each of the data tags a signal strength indicator of the wireless enabled device based on the signal from the wireless enabled device. Each of the data tags in a range transmits a signal to the wireless enabled device including the signal strength indicator of the wireless enabled device. Each signal strength indicator of the wireless enabled device is communicated to a positioning and communication system.

Abstract: A method and system for using frequency resources in a communication system are provided. In the method and system, a total frequency band is divided into at least two frequency subbands and there is a guard interval between frequency subbands. A first frequency subband includes a TDD UL frequency subband and a TDD DL frequency subband. A second frequency subband includes an FDD UL frequency subband. A BS sets a frequency band between the TDD UL frequency subband and an FDD UL frequency subband as an additional UL frequency subband, and receives a signal from an MS in the additional UL frequency subband.

Abstract: A power calibration algorithm is performed on a wireless communication device, where power measurements are taken across frequency sweep at the output of the device and at a power amplifier of the device, to accurately track voltage standing wave ratio impedance and errors associated with VSWR impedance. The measurements are performed as part of production of the wireless communication device and during online operation of the wireless communication device. During online operation the measurements are made by a detector at the power amplifier over the various frequencies of the frequency sweep.

Abstract: A transmitter circuit includes a first unit configured to determine a transmission power of the transmitter circuit, and a second unit configured to determine whether a transmission of data for a signaling radio bearer is scheduled by the transmitter circuit. The transmitter circuit further includes a third unit configured to suppress a transmission of transmission data by the transmitter circuit if the transmission power exceeds a threshold value and if the transmission of data for the signaling radio bearer is scheduled.

Abstract: An electronic device, for example, a laptop computer includes a processor, a transceiver module, for example, a Bluetooth module and a memory. The memory includes a platform proximity agent, which may be implemented as a series of instructions, which when executed by the processor, causes the processor to receive a Bluetooth signal from a corresponding provisioned Bluetooth device, for example, a cellular telephone. Next, determine whether the received signal exceeds both a strength threshold level and a predetermined time threshold level, where the signal strength and time threshold levels are established when the laptop and a corresponding cell phone are paired during a provisioning process. When the received signal strength and duration both exceed the corresponding policy based thresholds, the laptop enters (or remains in) a full power state with full access to the monitor and the platform.

Abstract: An improved method and a communication means node implementing the method for load control in connection with a multimedia service transmission intended for multiple receivers over a wireless network are disclosed. The receivers in the wireless network are able to respond to requests communicated from an ordering entity by feeding back responses to a management entity in said wireless network. The feedback of these responses uses a different communication means, separate from said wireless network. This different communication means has limited communication resources. A transmission load caused in said different communication means by said feedback of said responses is according to the invention controlled by the different communication means itself.

Abstract: A wireless base station controls to decrease a transmission power of a first wireless terminal corresponding to signal quality information exceeding lower limitation of a range in which a transmission scheme to be selected remains unchanged and being below a first threshold value, which is greater than the lower limitation and smaller than upper limitation of the range, among a plurality of wireless terminals corresponding to signal quality information belonging to the range, while controlling to increase a transmission power of a second wireless terminal corresponding to signal quality information being equal to or greater than the first threshold value so that a transmission scheme having a better transmission efficiency is selected, thereby to improve throughput of a communication between the wireless base station and the wireless terminal.

Abstract: A relationship is established between measurable characteristics of the DC power input to a power amplifier and the RF output power level. A power circuit is configured to measure the input supply current to the power amplifier and to utilize the relationship between the input supply current and the applied input supply voltage to the output power level, thereby normalizing the output power of an amplified communication signal.

Abstract: An apparatus for identifying a specific emitter in the presence of noise and/or interference is disclosed. The apparatus includes a sensor configured to sense radio frequency signal data, the signal data containing noise and signal from at least one emitter, a reference estimation unit configured to estimate a reference signal relating to the signal transmitted by one emitter, a feature estimation unit configured to generate one or more estimates of one or more feature from the reference signal and the signal transmitted by that particular emitter, and an emitter identifier configured to identify the signal transmitted by that particular emitter as belonging to a specific device using one or more feature estimates. The emitter identifier identifies the signal transmitted by that particular emitter as belonging to a specific device using Gaussian Mixture Models and the Bayesian decision engine.

Abstract: A method and an apparatus for determining whether a mobile terminal operates normally are provided. The method includes generating a transmission signal, isolating, at a Front End Module (FEM), the transmission signal provided to an antenna, and outputting the same, measuring a level of the output signal, and comparing the measured level of the output signal with a preset threshold level to determine that at least one of a Power Amplifier Module (PAM) and the FEM operates normally.

Abstract: A method is provided to transmit a signal by a transmitter in a communication system. The method includes predicting a receiver noise signal received from a receiver, and increasing an intelligibility of a transmitter signal using the receiver noise signal. The transmitter signal includes a transmitter noise signal and a transmitter speech signal. The transmitter cancels the transmitter noise signal from the transmitter signal and intensifies the transmitter speech signal in consideration of the receiver noise signal.

Abstract: In order to improve the reduction of interference among cells such as pico cells and ease operations of arranging and controlling the cells, a wireless communication area measuring apparatus includes: a signal measuring unit for calculating wireless environment indicators at measuring points based on measured data of received signal strength indicators of a plurality of base stations; a transmission power determination unit for adjusting transmission power of the base stations based on margins of the received signal strength indicators; and a display unit for outputting adjustment results of the transmission power of the base stations.

Abstract: Fuzzy logic is utilized to control an RF amplifier and associated tuner for continuous self-optimization and automatic load matching to at least double the battery life of a battery-powered transmitter.

Abstract: An electrical circuit comprises a source of an interferer signal; at least one component configured for using the signal; at least two electrically parallel conductive paths by which the signal can pass between the source and each of the at least one components; and a signal path selector configured to selectively enable the signal to pass from the source to the component by any of the at least two conductive paths and to, when one of the paths is enabled to carry the signal, disable each of the other at least two paths from carrying the signal.

Abstract: The present invention relates to a method of adjusting transmission power on a downlink radio channel in a communication system comprising a user equipment and a base station. In the method uplink power headroom is determined by dividing a maximum transmission power of the user equipment by a transmission power of a control channel of the user equipment and the determined uplink power headroom value is sent to the base station. Then uplink path loss estimate is determined between the user equipment and the base station based on the uplink power headroom. Then an estimate for the downlink path loss is derived and finally the transmission power of the downlink radio channel is adjusted taking into account the downlink path loss estimate.

Abstract: A power tuning method determines values of a magnitude control signal that controls the magnitude of an amplitude-modulated power supply signal applied to a power supply port of a power amplifier of a polar transmitter and an amplitude control signal that controls the amplitude of a constant-envelope phase-modulated signal applied to a radio frequency input port of the power amplifier necessary to set the output power of the polar transmitter to a target output power. The method is repeated and performed for a plurality of different target output powers. Output-power-level dependent power control parameters calculated from the applied method are used to set the values of the magnitude control and amplitude control signals during normal operation.

Abstract: An apparatus comprising an artificial noise (AN) controller coupled to a digital subscriber line (DSL) transmitter and configured to adjust an AN level for a signal transmitted by the DSL transmitter, wherein the AN level is adjusted based on an actual signal to noise ratio (SNR) of the signal from the receiver to achieve a desired SNR for the signal. Also disclosed is a method comprising maintaining a data rate in a line at about a desired level by adjusting an AN level in a transmitted signal based on a SNR of a received signal.

Abstract: A radio communication method includes deciding either a sending timing or a receiving timing; measuring a receiving electric intensity; comparing a stored value and the measured receiving electric intensity; and starting a sending operation when the measure receiving electric intensity is smaller than the stored value in the sending timing and starting a receiving operation when the measurement receiving electric intensity is greater than the stored value in the receiving timing.

Abstract: A radio frequency transmitter includes a baseband transmit processing module, a mixing module, a power amplifier, a transmit power sense module, and a transmit power control module. The baseband transmit processing module is operably coupled to encode outbound data into outbound baseband signals in accordance with one of a plurality of encoding protocols. The mixing module is operably coupled to convert the outbound baseband signals into outbound radio frequency signals. The power amplifier is operably coupled to amplify the outbound RF signals prior to transmission to produce amplified outbound RF signals. The transmit power sense module is operably coupled to sense the amplified outbound RF signals to provide a transmit signal strength indication (TSSI). The transmit power control module is operably coupled to adjust gain of the baseband transmit processing module, the mixing module, and/or the power amplifier based on the TSSI and the particular encoding protocol used to produce the baseband signals.

Abstract: Embodiments of the present invention relate to methods and systems of transmitting data signals from at least one transmitting terminal with a spatial diversity capability to at least two receiving user terminals, each provided with spatial diversity receiving device. The methods and systems are useful, for example, in communication between terminals, e.g., wireless communication. In certain embodiments, transmission can be between a base station and two or more user terminals, wherein the base station and user terminals are each equipped with more than one antenna.

Abstract: An embodiment of the present invention provides an apparatus, comprising a transceiver, an antenna tuner connecting the transceiver to an antenna, a power sensor adapted to acquire measurements about transmit power, a receive signal strength indicator (RSSI) adapted to acquire measurements about receive power and wherein the tuner tunes the antenna based upon the transmit and receive measurements to optimize the antenna in both the receive and transmit bands.

Abstract: A signal processing system is disclosed. The system includes: a first synthesizer and a second synthesizer, for respectively generating a first frequency and a second frequency; a first RF circuit; a first analog front end (AFE); a second RF circuit; and a second AFE, wherein the first RF circuit and the first AFE can support a signal transmission of a first bandwidth, the second RF circuit and the second AFE can support a signal transmission of a second bandwidth, a central frequency of the first bandwidth is substantially equal to the first frequency, and a central frequency of the second bandwidth is substantially equal to the second frequency.

Abstract: A tilting portable electronic device includes a housing, a cover, at least one supporting rod and at least one telescoping bar. The at least one supporting rod rotatably connects to the housing and the cover; the at least one telescoping bar rotatably connects to the housing and the cover. The telescoping bar includes at least two bushing sections, the two bushing sections retractably connect each other. When the cover is opened relative to the housing, the telescoping bar expands and rotates and the supporting rod rotates until the telescoping bar and the supporting rod cooperatively support one end of the cover.

Abstract: A tilting portable electronic device includes a main body, a cover having a sliding plate, a sliding mechanism connecting to the main body and the cover respectively. The sliding mechanism includes a first plate secured to the main body, a second plate slidably engaging with the first plate, two connecting bars and two swing arms. The connecting bars rotatably connect with the second plate and the sliding plate, the swing arms rotatably connect with the main body and the connecting bar. When the sliding plate is pushed and slides relative to the main body, the connecting bars slides, the first plate correspondingly slides relative to the second plate, and the swing arms rotates to support an end of the cover.

Abstract: A wireless transceiver including multiple antennas, an antenna switch, and a media access controller that controls the antenna switch for determining when to switch to another antenna based on packet error rate (PER). Instead of switching the antenna on a packet-by-packet basis, antenna selection is made after one or more packets errors have been detected. The CRC is used to identify receive packet errors. A timer is used to determine each transmit packet error when an acknowledge packet is not received in time. A method of selecting from among multiple antennas including counting packet errors, comparing a packet error count with a threshold value to determine a threshold condition, switching to a different antenna if the threshold condition is met, and resetting the packet error count when the threshold condition is met.