Abstract: A multi-functional remote monitoring system for use in a mobile surveillance system comprising a host controller, at least one hub transceiver, and at least one remote monitoring transmitter (“RMT”) operable to capture and transmit data, wherein the hub transceiver is operable to communicate to and receive data from the at least one RMT. The hub transceiver and the RMT are adapted for bi-directional transmission and receipt of data, including audio and data signals. The host controller is operable to control the hub transceiver and facilitate communication of the audio and data signals between the RMTs and the hub transceiver.

Abstract: The present invention relates to method of transmitting and receiving signaling and a corresponding apparatus. One aspect of the present invention relates to a method of receiving a signal, which includes a preamble, where a bandwidth of the preamble is identical with a bandwidth of a tuner of a receiver.

Abstract: Approaches for crest factor reduction in a multiband transmitter. An input data signal is placed on a first frequency band, and a second frequency band that is inactive is selected. The second frequency band is out-of-band from the first frequency band. A peak-reducing waveform placed on the second frequency band is generated. The peak-reducing waveform is configured to reduce a plurality of peaks in the data signal. The peak-reducing waveform and the data signal are combined to produce a crest-factor-reduced signal. The crest-factor-reduced signal is transmitted from the multiband transmitter.

Abstract: A system is provided for transmitting information through a speech codec (in-band) such as found in a wireless communication network. A modulator transforms the data into a spectrally noise-like signal based on the mapping of a shaped pulse to predetermined positions within a modulation frame, and the signal is efficiently encoded by a speech codec. A synchronization sequence provides modulation frame timing at the receiver and is detected based on analysis of a correlation peak pattern. A request/response protocol provides reliable transfer of data using message redundancy, retransmission, and/or robust modulation modes dependent on the communication channel conditions.

Abstract: A method and apparatus of transmitting a reference signal in a wireless communication system is provided. The method includes generating a precoded reference signal or a non-precoded reference signal in accordance with a rank, and transmitting the generated reference signal. Uplink transmission using multiple transmit antennas is supported through reference signal design and related control signaling.

Abstract: The present invention relates to method of transmitting and receiving signals and a corresponding apparatus. One aspect of the present invention relates to a method of receiving a signal, which includes interleaving in an appropriate manner for a channel bonding system. The interleaving can allow decoding a user requested service at a random tuner window position.

Abstract: An integrated circuit chip implements a high-speed switch that includes: a switch fabric; control logic that controls the transmission of digital signals through the switch fabric; a transceiver block comprising one or more transceivers, each transmitting digital signals between the control logic and a corresponding external device; a data converter physical interface comprising one or more data converters, each performing a conversion between analog and digital signals, wherein digital signals associated with the one or more data converters are routed through the switch fabric; and a signal processing engine coupled to the control logic, wherein the signal processing engine performs on-chip processing of digital signals received from the transceiver block and the data converter physical interface.

Abstract: The present invention relates to a method of transmitting and a method of receiving signals and corresponding apparatus. One aspect of the present invention relates to an efficient L1 signaling method for an efficient transmitter and an efficient receiver using the efficient L1 signaling method for an efficient cable broadcasting.

Abstract: Systems and methods are disclosed for an electronically adjustable signal filter system, which comprises, in some embodiments, a first filter coupled to an antenna coupling network and a second filter, a power amplifier coupled to the first filter, an antenna connected to an antenna coupling network, a pilot tone generator coupled to the first filter, and a first signal source connected to the power amplifier and first filter. In some embodiments, the power amplifier amplifies the first signal, the first filter places a notch into the first signal transmitted to the antenna coupling network, the antenna coupling network combines the first signal and a second signal received from the antenna and transmits a third signal to the second filter.

Abstract: The transmitter of the transceiver includes: a transmitter-side mixers of a transmitter-side modulator; a transmitter-side voltage-controlled oscillator; and a transmitter-side divider. The divider having a dividing factor of a non-integral number is supplied with an oscillating output of the oscillator. A pair of non-quadrature local signals having a phase difference of 90° plus a predetermined offset angle is produced by the divider and supplied to the mixers. The transmitter includes a phase-shift unit which converts a pair of quadrature transmit signals having a phase difference of about 90° on an analog basis into a pair of non-quadrature shifted transmit signals. Consequently, quadrature modulation is performed by the mixers. Use of a similar configuration enables the reduction in interference of an RF signal with local signals supplied to receiver-side mixers of the receiver.

Abstract: A baseband filter and upconverter with configurable efficiency for use in wireless transmitters is disclosed. In an exemplary embodiment, an apparatus is provided that includes a baseband filter having configurable efficiency, and an upconverter having configurable efficiency and coupled to the baseband filter. The baseband filter and upconverter are configured to operate at a first efficiency level in a first output power range and to operate at a second efficiency level in a second output power range.

Abstract: Techniques are provided to enable computation of beamforming weights for beamforming MIMO wireless communication between first and second wireless communication devices. At the first device comprising a first plurality of antennas, signals are received that are wirelessly transmitted from a different one of a second plurality of antennas of the second device during a corresponding one of a plurality of time slots. The first device computes beamforming weights from the received signals. When signals are to be transmitted from the first device to the second device, the first device applies the beamforming weights to signals to be transmitted from the first plurality of antennas of the first device to the second plurality of antennas of the second device.

Abstract: An apparatus for providing a data encoding scheme may include an encoder. The encoder may be configured to determine, for a digital input value comprising a particular number of bits, whether more than half of the bits of the digital input value have a high value. The encoder may be further configured to encode the digital input value by inverting each of the bits of the digital input value in response to a determination that more than half of the bits of the digital input value have the high value. Corresponding method and computer program product, and a decoder and decoding method are also provided.

Abstract: An information processing apparatus includes a reception section that receives marking information from a different information processing apparatus and corresponding to a scene of a broadcast program. The marking information indicates a broadcast station and a broadcast time. The information processing apparatus also includes a processing unit that extracts a Universal Resource Identifier (URI) based on the broadcast station and the broadcast time, and produces navigation information associated with the scene of the broadcast program, based on the URI.

Abstract: Various embodiments include a method for controlling power in a transmitter, the method comprising measuring an indication of an output power of the transmitter, comparing a first value corresponding to the indication of the output power to a second value corresponding to a desired output power; and adjusting a bias of at least one component in the transmitter in order to bring the output power closer to the desired output power. Embodiments also include various methods, systems and apparatus.

Abstract: Embodiments of apparatuses, systems and methods relating to a mixer having high second- and third-order intercept points are disclosed. Other embodiments may be described and claimed.

Abstract: Systems and methods are provided for a broadband, closed-loop RF transmitter for multi-band applications that employs a single RE path to service multiple bands of operation. Embodiments of the present disclosure implement a broadband impedance matching module, which avoids the need for several costly and complex narrow-band matching networks. In an embodiment, the broadband impedance matching module includes concentric, mutually coupled inductors. By adding this broadband impedance matching functionality, delay is significantly reduced because a single path can be used to service multiple bands.

Abstract: Disclosed are an apparatus and method for constant amplitude encoding of a transmission signal in a CDM (Code Division Multiplexing) communication system. The apparatus for constant amplitude encoding of a transmission signal includes: an encoding module sequentially performing horizontal encoding and vertical encoding on an input signal; and a spreading and multiplexing module spreading the signal which has been encoded by the encoding module and multiplexing the spread signal in a vertical direction to output a data stream having a constant amplitude.

Abstract: A method, system, apparatus and article are described for optimizing transformer power combiners and for dynamically controlling power for outphasing power amplifiers. In some embodiments, for example, an apparatus may comprise one or more outphasing power amplifiers, one or more phase modulator modules coupled to and operative to dynamically control the one or more outphasing power amplifiers, and one or more power combiners coupled to and operative to combine outputs from the one or more outphasing power amplifiers, wherein the one or more power combiners comprise transformer power combiners arranged to combine outphasing signals using a primary inductor and differential signals using a secondary inductor. Other embodiments are described and claimed.

Abstract: A system and method for reducing or entirely canceling background or ambient noise from a voice transmission from a communications device. A communications device, such as a mobile telephone, is configured with an ambient noise compensation signal generator that is connected between a microphone and a mixer. The original output of the microphone and a compensation signal generated by the ambient noise compensation signal generator are mixed together prior to being passed to a transmitter. In one embodiment a buffer is provided between the microphone and the mixer to help synchronize the timing of the signals to be mixed. In another embodiment a second microphone is employed to detect ambient noise.

Abstract: Disclosed are various embodiments for transmitting radio frequency signals. A radio frequency transmitter may be configured to generate an analog signal comprising an in-phase component and a quadrature-phase component. The in-phase component and the quadrature-phase component of the analog signal may be provided to multiple radio frequency processing chains. One of the radio frequency processing chains may generate an output radio frequency signal based on the in-phase component and the quadrature-phase component.

Abstract: In accordance with some embodiments of the present disclosure, a circuit comprises an input node configured to receive a current-mode input signal and an input stage that includes an input device communicatively coupled to the input node. The input device is configured to receive the input signal at the input node. The circuit additionally comprises bias circuitry communicatively coupled to the input stage and configured to provide a bias current for the input device. The bias circuitry is also configured to remove at least a portion of the bias current from the input signal through a feedback loop associated with the input node such that the input signal is received by the input device with at least a portion of the bias current removed. The circuit further comprises an output stage communicatively coupled to the input stage and configured to output a current-mode output signal based on the input signal.

Abstract: To provide a power amplifier circuit which is capable of reducing a phase error of an output signal in a case where an amplitude of an input signal is relatively small, as well as a transmitter and a wireless communication device using the same. A constant envelope signal generation circuit (20) converts an input signal (Si) having envelope variation into a first constant envelope signal (Sd1) and a second constant envelope signal (Sd2) having the same amplitude and different phases, and outputs the signals. A first amplifier (11) amplifies the first constant envelope signal (Sd1). A second amplifier (12) amplifies the second constant envelope signal (Sd2). An output adder (13) outputs an amplified output signal having envelope variation based on the amplified signals output from the first amplifier (11) and the second amplifier (12).

Abstract: A wireless communication unit comprising a transmitter having a power amplifier, a controller logic module arranged to control a power control value of the power amplifier and a closed loop control system operably coupled to the power amplifier and arranged to monitor a level of peak PA compression, wherein in response to the identified level of peak PA compression the controller logic module is arranged to automatically adjust a power amplifier power control value of the PA to obtain a predetermined level of peak PA compression.

Abstract: A carrier bearing method includes obtaining transmit power of each carrier borne on all power amplifiers in a radio remote unit after detecting that transmit power of a carrier borne on a power amplifier in the radio remote unit changes; adjusting a correspondence between the carriers and the power amplifier in the radio remote unit according to the obtained transmit power; and bearing each carrier on its corresponding power amplifier according to the adjusted correspondence. The device and base station are used to implement the above method.

Abstract: In a wireless communication apparatus, when a first switch electrically connects a second antenna to an impedance matching circuit and a second switch electrically connects a first antenna to a reception circuit, a frequency signal output from an oscillator of the reception circuit is received by the second antenna and applied to the impedance matching circuit. Then, a controller controls the impedance of the impedance matching circuit so as to bring a RSSI voltage output from a signal strength detection circuit of the reception circuit into agreement with a reference RSSI voltage, thereby bringing the reference frequency of the first antenna into agreement with a reference frequency.

Abstract: According to one embodiment, an electronic apparatus includes a communication module, a communication state notification module, a notification function information obtaining module, and a notification function control module. The communication module executes close proximity wireless transfer. The communication state notification module notifies at least one of a start time and an end time of data transfer executed between the communication module and an external device, the data transfer being executed by the close proximity wireless transfer. The notification function information obtaining module obtains notification function information indicative of a capability relating to a communication state notification function of the external device from the external device. The notification function control module requests the external device to execute or suppress the communication state notification function by the external device, based on the obtained notification function information.

Abstract: Systems and methods that provide channel-adaptive antenna selection in multi-antenna element communication systems are provided. In one embodiment, a method that selects a subset of receive antennas of a receiver to receive a transmitted RF signal may include, for example, one or more of the following: establishing possible subsets of the receive antennas; determining sets of channel parameter statistics corresponding to the possible subsets of the receive antennas; computing output bit error rates of the receiver, each output bit error rate being computed based on at least one set of channel parameter statistics; selecting a particular possible subset of the receive antennas based upon a criterion predicated on the computed output bit error rates; and connecting one or more RF chains of the receiver to the receive antennas of the selected particular possible subset.

Abstract: There is provided a communication device including: a high frequency coupler; a band-pass filter; a switching mechanism that switches an electrical length a transmission line between the high frequency coupler and the band-pass filter; a communication unit that receives hardware information of other end of communication before establishing a communication connection; and a control unit that controls switching of the electrical length of the transmission line according to the received hardware information of the other end of communication by using the switching mechanism with or after establishing a communication connection.

Abstract: To provide a power amplifier circuit, which is capable of amplifying a signal having envelope variation with high power added efficiency, and exhibits low power consumption and high versatility, as well as to provide a transmitter and a wireless communication device using the power amplifier circuit, the power amplifier circuit includes: a constant envelope signal generation circuit (20) for converting an input signal (Si) having envelope variation into two constant envelope signals (Sd1, Sd2); a first and a second amplifiers (11, 12) for amplifying the two constant envelope signals to output two amplified signals (Sh1, Sh2); and an output adder (13) for performing vector addition of the two amplified signals.

Abstract: The invention relates to an apparatus on which a drinking vessel may be placed, in particular an apparatus which provides information, wherein the information is connected with the drinking vessel. An apparatus for indicating the filling level of a drinking vessel comprises a placement device on which the drinking vessel is placed, a detection device for detecting the filling level of the drinking vessel (200), and a display element which displays the detected filling level.

Abstract: A method and system for fractionally converting sample rates. Fractional rate conversion for a transmit path of a transceiver is achieved by upsampling an input signal having a first sample rate by a first integer factor, removing aliasing resulting from the upconversion process, and then downsampling the intermediate signal by a second integer factor to provide a final signal having a second sample rate. The first factor and the second factor are selected to obtain a desired output sample rate that is a fraction of the sample rate of the input signal.

Abstract: An integrated multi-mode radio transmitter includes a multiplexor and a shared front-end. The is operable to select an IF signal of a plurality of IF signals based upon a selection signal that is indicative of a particular operational mode of the one of the plurality of IF signals. The shared front-end is coupled to receive the selected IF signal, wherein the shared front-end converts the selected IF signal into a radio frequency (RF) signal that is modulated in accordance with the particular operational mode of the one of the plurality of IF stages.

Abstract: A wireless communication unit comprises a transmitter having a power amplifier and a feedback path operably coupled to the power amplifier. The feedback path comprises a coupler for feeding back a portion of a signal to be transmitted and a detector for detecting a power level of the fed back signal. A controller provides a ramp signal to the power amplifier that controls an amplitude characteristic of the signal to be transmitted. Averaging logic is operably coupled to the detector and arranged to average the detected power level over a first period. Comparison logic is operably coupled to the averaging logic and arranged to compare the average detected power level with a reference value. The controller is operably coupled to the comparison logic and arranged to scale a ramp signal applied to the power amplifier in response to the comparison.

Abstract: A method for compensating signal distortions in multiple transmitting branches (3, 5; 43, 45, 46) entering a composite amplifier (1; 1?). According to the invention the method comprises the steps of: —providing (S1) one or more input signals (x) to the composite amplifier. —observing (S2) an output signal (z) from the composite amplifier (1; 1?) for each provided input signal; —deriving (S5) an error in each output signal (z) by comparing the output signal with an ideal output signal, said error being caused by said signal distortions; —deriving (S11) the individual contribution from each transmitting branch (3, 5; 43,45,46) to the error by utilizing a composite amplifier model, said composite amplifier model comprising information about the contribution from each constituent amplifier (23, 25; 103a,103b,103c) to the output signal for each provided input signal: —compensating the signal distortions in the transmitting branches (3, 5; 43,45,46) accordingly.

Abstract: A wireless transmission apparatus includes an electrically insulative housing, metal conducting terminals vertically arranged at the rear side of the electrically insulative housing and having one respective front contact portion respectively horizontally extended to the bottom wall of an accommodation chamber in the electrically insulative housing, and a transmission module, which includes a circuit assembly accommodated in the accommodation chamber of the electrically insulative housing and metal adapter terminals each having a bonding end vertically disposed at the rear side and respectively bonded to the circuit assembly and a springy contact end horizontally disposed at the front side and kept in positive contact with the front contact portion of one respective metal conducting terminal.

Abstract: An integrated circuit (IC) includes a multi-input multi-output transceiver system that includes a plurality of RF transceivers. Each RF transceiver includes an RF transmitter that transmits a transmit signal at a selected transmit power, based on a transmit power control signal and a corresponding RF receiver for receiving a corresponding one of a plurality of received signals from an external device and for generating a signal strength indication corresponding to each of the plurality of received signals. A processing module generates the transmit power control signal for each RF transmitter based on the signal strength indication of the corresponding RF receiver, and that generates a power mode signal for adjusting a power consumption parameter of each RF transmitter in accordance with the selected transmit power for each RF transmitter.

Abstract: Methods, systems, apparatus and computer program products are provided to facilitate the configuration and allocation of control information associated with transmissions of a wireless communication system. In systems that utilize multiple component carriers, cross-carrier signaling may be used to carry the control information associated with one component carrier on a different component carrier. By allowing control information messages to share their allocated search spaces, the number of decoding attempts needed to obtain control information can be kept within desirable limits while improving scheduling and resource allocation flexibility. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the disclosed subject matter. Therefore, it is to be understood that it should not be used to interpret or limit the scope or the meaning of the claims.

Abstract: A wireless communication unit comprises a transmitter having a forward path comprising a power amplifier, PA, and a feedback path arranged to feed back a portion of a signal output from the PA to a point in the forward path prior to the PA. The forward path and feedback path form a constant gain tracking (CGT) loop. The feedback path comprises an adaptive predistortion logic module located outside of the CGT loop and arranged to form an APD loop with the forward path and feedback path. The CGT loop comprises a controller logic module arranged to determine a gain offset of a signal routed through the forward path and feedback path and in response thereto set a drive level of the PA.

Abstract: Implementations of a high gain range transmitter with variable-size mixers are described.

Abstract: The present invention relates to the field of data transmission. The invention has application to amplifiers, the transmission of data modulated signals, filters and/or matching circuits connected between an amplifier and a load, radio transmitters, the transmission of data modulated radio signals, filters and/or matching circuits used between a transmitter's power amplifier and an antenna and the field of Radio Frequency Identification (RFID), such as in the transmission of data between a tag and an interrogator. The present invention enables the transmission of phase modulated signals, by adjusting a device's tuning to substantially match the instantaneous frequency of the phase modulated signal.

Abstract: The present invention concerns the field of power amplifiers and in particular the enhancement of the performance of the amplifier by a feedback loop acting on the input signal. We present a method for linearizing a power amplifier circuit having as input signal a digital base-band input signal, (x), a power output signal 8z), a power amplifier (PA) and a linearizer module (LM).

Abstract: The present invention discloses a transmission method and apparatus for a wireless communication system. The data transmission method comprises the following steps. A first data mapped in a QAM constellation pattern is transmitted in a first transmission. And a second data, which is reversion of the first data and mapped in said QAM constellation pattern, is retransmitted. In embodiment, the interleaved data is partially swapped based on a predetermined swapping pattern. In another embodiment, first interleaved data and second interleaved data are multiplexed per N bits, N is an integer larger than 1. Therefore, improvement of reliability at first transmission or retransmission in a wireless communication system can be achieved.

Abstract: Digital transmitters having improved characteristics are described. In one design of a digital transmitter, a first circuit block receives inphase and quadrature signals, performs conversion from Cartesian to polar coordinates, and generates magnitude and phase signals. A second circuit block (which may include a delta-sigma modulator or a digital filter) generates an envelope signal based on the magnitude signal. A third circuit block generates a phase modulated signal based on the phase signal. The third circuit block may include a phase modulating phase locked loop (PLL), a voltage controlled oscillator (VCO), a saturating buffer, and so on. A fourth circuit block (which may include one or more exclusive-OR gates or an amplifier with multiple gain states) generates a digitally modulated signal based on the envelope signal and the phase modulated signal.

Abstract: Peak power reduction in transmit chains of multi-band radiocommunication devices is performed. By using knowledge of the phase transformations which occur at the upconverter to determine how baseband signal samples will combine at the higher (upconverted) frequency, peak prediction and corresponding baseband signal modification can be performed in a way that reduces peak power of the combined signal.

Abstract: This inventive wireless communication system comprises a plurality of wireless communication devices (101) each including a radiating oscillator (1), a baseband signal generating unit (4) and a reception signal detecting unit (7).

Abstract: Implementations related to circuits including an oscillator and a switch-mode DC/DC converter are presented herein.

Abstract: A radio frequency (RF) transmitter includes a transmitter processing module that generates a processed signal and a modulating signal based on outbound data. An up-conversion module up-converts the processed signal to generate an up-converted signal. A programmable filter module generates a first plurality of delayed signals from the up-converted signal and that generates a filtered up-converted signal by combining the up-converted signal and the first plurality of delayed signals, wherein a delayed signal of the first plurality of delayed signals is scaled based on one of a first plurality of coefficients, wherein the first plurality of coefficients are selected based on a control signal. A polar amplifier amplifies and amplitude modulates the filtered up-converted signal based on the modulating signal to generate a transmit signal. A processing module generates the control signal to attenuate at least one RF spur of the up-converted signal.

Abstract: Information transmission in a multiple-input multiple-output (“MIMO”) wireless communication system is provided.

Abstract: A device, e.g., a hearing aid, has an electronic circuit for wireless communication of a digital signal. The circuit has a driver driving an RLC tank. The driver has a plurality of inverters whose outputs are coupled to a node of the coil via a respective one of multiple capacitors in the tank. The circuit has a controller that selectively drives one or more of the inverters with the digital signal and connects the inputs of the other inverters to a supply voltage or ground. The tank has a further plurality of series arrangements of a further capacitor and a high-voltage switch connected between the node and ground. The controller is configured for controlling the high-voltage switches.