Abstract: A cooperative multiple-input multiple-output system based on partial Zadoff-Chu sequences and a synchronization method thereof are disclosed, and the system comprises a plurality of transmitters and a receiver. Each transmitter's training signal is disposed in a subband having a length of V, and the training signal is converted into a time domain signal. The receiver receives the time domain signals of the cooperating transmitters. Each transmitter extracts V successive samples from any region of a Zadoff-Chu sequence having a length equal to a multiple of V and the samples are disposed in an exclusive subband as the training signal. When the training signals of cooperating transmitters are converted into time and frequency domain signals, the training signals of all the transmitters are separated from each other to suppress mutual interference in both time and frequency domains and to improve the performance of synchronization.

Abstract: A transmitter circuit is described. The transmitter circuit includes a first local oscillator that generates a first frequency equal to a duplex frequency. The transmitter circuit also includes a second local oscillator that generates a second frequency equal to a receive frequency. The transmitter circuit further includes a first mixer that combines the first frequency with a first input signal. The transmitter circuit also includes a first feedback loop. The first feedback loop includes a second mixer that combines the second frequency with a transmit signal and a first filter and a first adder that combines an output of the first mixer with an output of the first filter. The transmitter circuit also includes a third local oscillator that generates a third frequency equal to the receive frequency. The transmitter circuit further includes a third mixer that combines the third frequency with an output of the first adder.

Abstract: A method for LTE or WiMAX scheduling includes collecting, by a basestation BS, channel feedback from multiple mobiles with downlink traffic. The channel feedback enables the BS to determine an achievable rate or block error probability if transmitting to a mobile with a given modulation and coding scheme MCS and multiple-input multiple-output MIMO mode. The method includes determining, by the BS, which of the mobiles is scheduled on each resource block RB and what the MCS and MIMO mode is selected for each scheduled mobile, and allocating bits on the set of the RBs assigned to each scheduled mobile.

Abstract: Systems and methods for combining signals from multiple active wireless transmitters are discussed herein. An exemplary system comprises a radio enclosure, a first transmitting RFU, a second transmitting RFU, and a combiner. The first transmitting RFU may be configured to receive a signal, upconvert the signal, compare a phase of the upconverted signal to a predetermined phase value, and adjust the phase of the signal based on the comparison to provide a first phase-adjusted upconverted signal. The second transmitting RFU may be configured to receive the signal, upconvert the signal, compare a phase of the upconverted signal to the predetermined phase value, and adjust the phase of the signal based on the comparison to provide a second phase-adjusted upconverted signal. The coupler may be configured to combine the first and second phase-adjusted upconverted signals to create an output signal and provide the output signal to an antenna for transmission.

Abstract: According to one embodiment, a method of transmitting a broadcasting signal includes: encoding data; encoding signaling data by an LDPC (Low Density Parity Check) scheme; building a signal frame based on at least one preamble data symbol having the encoded signaling data and a data slice having the encoded data; inserting at least one pilot into the signal frame with a specific pattern and modulating the signal frame by an OFDM (Orthogonal Frequency Division Multiplexing) method; and transmitting the modulated signal frame. A signaling block having the signaling data is repeated in the at least one preamble data symbol in a frequency domain by a bandwidth. The bandwidth of the signaling block corresponds to a number of active subcarriers assigned to a single channel.

Abstract: A method for multi-beam forming based on joint receiving and transmitting end information is provided. The method includes: a transmitting end decomposing a channel matrix H using a geometric mean decomposition (GMD) way to obtain a unitary matrix P; the transmitting end using the unitary matrix P as a weight matrix of GMD beam forming and executing multi-beam forming processing on an original transmission signal x. The present invention also provides a system for multi-beam forming based on joint receiving and transmitting end information, and a transmitting device and receiving device for supporting multi-beam forming based on joint receiving and transmitting end information. By using geometric mean decomposition way to decompose the channel matrix H, the sub channels corresponding to various beams obtain the equal gain. When the channel is ill-conditioned, the channel equalization will not interfere with searching the perturbation vector, thereby avoiding the performance degradation.

Abstract: A system is provided for transmitting a low code rate spatially multiplexed channel on multiple antennas. The system includes a transmitter and a processor. The processor is configured such that the processor encodes a block of information bits to form channel coded bits, wherein the ratio of the number of channel coded bits to the number of information bits is greater than one; and the processor maps the channel coded bits to modulation symbols, and each channel coded bit is mapped once to a modulation symbol. The transmitter is configured to transmit a first portion of the modulation symbols using a spreading sequence on a first antenna of the multiple antennas and to transmit a second portion of the modulation symbols using the spreading sequence on a second antenna of the multiple antennas.

Abstract: The present invention refers to operating of power amplifiers of base stations in a communications network, wherein each power amplifier is assigned to a corresponding antenna of a base station and enables receiving and/or transmitting of information signals in an area of the communications network covered by the corresponding antenna. The operating includes switching off of a number of power amplifiers of a base station so that at least one power amplifier of the base station is left on, if level of load in the communications network is detected as being low; and switching of a signal of the at least one power amplifier to antennas, to which power amplifiers of the number of power amplifiers are assigned.

Abstract: An apparatus for implementing digital baseband predistortion includes a transmission channel including a digital-to-analog converter, a modulator, an amplifier and a power amplifier, and further includes a feedback channel analog part including a diode detector, a filter and an analog-to-digital converter, and a feedback channel digital part including a predistorter, a mode obtaining unit, a predistortion coefficient generator and a feedback correcting unit. The diode detector is configured to obtain an envelope of an output signal of the power amplifier. Embodiments of the present invention further provide a method for implementing digital baseband predistortion by applying the foregoing single-chip. Due to a simple structure of the diode detector, not only the number of radio frequency devices on the feedback channel is reduced, implementation complexity of hardware is lowered, power consumption is reduced, but also a feedback channel analog part may be integrated onto the single-chip.

Abstract: A direct-conversion transmitter including an oscillator, a frequency divider, a transmitter, and a filter is provided. The oscillator generates an oscillating signal with an original frequency. The frequency divider performs frequency dividing on the oscillating signal, so as to generate a carrier signal. The transmitter receives the carrier signal from the frequency divider and generates an output signal based on the carrier signal and a data signal. The filter is coupled between the frequency divider and the transmitter. The filter filters out an interference signal fed-back from the transmitter to the oscillator, wherein the interference signal may cause the oscillating signal to float.

Abstract: According to one embodiment, a buffer circuit has a capacitor comprising a first terminal and a second terminal, an input signal being inputted to the first terminal, a first inverting amplifier circuit configured to invert and amplify a signal of the second terminal of the capacitor, a second inverting amplifier circuit configure to invert and amplify an output signal of the first inverting amplifier circuit, and a MOS (Metal Oxide Semiconductor) transistor comprising a third terminal, a fourth terminal and a gate, the third terminal being connected to the second terminal of the capacitor, the fourth terminal being connected to a connection node of the first and the second inverting amplifier circuits, an inversion signal of the input signal being inputted to the gate.

Abstract: Transmit modules typically constitute passive matching circuitry, harmonic trap filters and an antenna switch to provide isolation between the transmit bands as well as between transmit and receive functions. In complementary metal-oxide semiconductor (CMOS) processes the switch function is difficult to implement as a large voltage swing may result in breakdown of the MOS oxide, drain diode, source diode as well as substrate diodes. Therefore a switching function is provided at a node that has low impedance during transmit that limits the voltage swing that the MOS switches experience. The approach is particularly useful, but not limited to, half duplex transmissions such as those used in global system for mobile (GSM) communication, enhanced data for GSM Evolution (EDGE), and time division synchronous code division multiple access (TDSCDMA).

Abstract: Included is a radio transmission system comprising a plurality of power amplifiers (PAs); a plurality of Volterra Engine (VE) linearizers corresponding to the PAs; a plurality of feedback loops corresponding to the PAs; at least one digital hybrid matrix (DHM) coupled to the VE linearizers; and an analog hybrid matrix (AHM) coupled to the PAs, wherein the feedback loops are connected to the AHM and the VE linearizers but not to the PAs to reduce the number of feedback loops. Also included is a radio system comprising a plurality of PAs; a Volterra DHM (VDHM) coupled to the PAs; a plurality of feedback loops corresponding to the PAs; and an AHM coupled to the PAs, wherein the feedback loops are connected to the AHM but not to the PAs to reduce the number of feedback loops.

Abstract: Embodiments for at methods, apparatus and systems for operating a voltage regulator are disclosed. One apparatus includes a switching voltage regulator, wherein the switching voltage regulator includes a series switch element, a shunt switch element, a switching controller and a switched output filter. The switching controller is configured to generate a switching voltage through controlled closing and opening of the series switch element and the shunt switch element. The switched output filter filters the switching voltage and generates a regulated output voltage, wherein the switched output filter includes a plurality of capacitors that are selectively included within the switched output filter.

Abstract: The present technology relates to a transmitter apparatus, an information processing method, a program, and a transmitter system capable of easily transmitting a wideband signal. The transmitter apparatus includes: a first acquisition unit that obtains first transmission control information; a second acquisition unit that obtains second transmission control information similar to information input to another transmitter apparatus; and a generating unit that processes transmission target data based on a parameter contained in the first transmission control information and generates data including the processed transmission target data and the second transmission control information. The present technology can be applied to a transmitter apparatus that transmits a DVB-C2 signal.

Abstract: An attenuating antenna switch may be used to suppress increase in the scale and power consumption of an RFIC. The antenna switch has a first terminal, a second terminal, and an antenna terminal coupled to the first and second terminals and configured to be connected to an antenna. The first switch switches between a first state in which a high frequency signal is propagated between the first terminal and the antenna terminal, and a second state in which the high frequency signal is interrupted. A second switch switches between the first and second states between the second terminal and the antenna terminal. The first and second switches are controlled in a mutually exclusive manner such that only one of the two switches can be in the first state at any given time. When in the first state, each switch adjusts an attenuation amount of the high frequency signal.

Abstract: A communication device comprising at least first and second antennas wherein a quality of communication between the communication device 2 and a further device 20 is assessed when using the at least first and second antennas 8, 10, 12 so as to select one of the at least first and second antennas for further communications between the communication device and the further device.

Abstract: Methods and systems for amplitude modulation using a leaky wave antenna are disclosed and may include amplitude modulating an output of one or more power amplifiers in a wireless device by modulating a bias current in the power amplifiers that are coupled to one or more leaky wave antennas. The leaky wave antennas may include a balun that may be integrated on the chip, on a package to which the chip may be affixed, and/or integrated on a printed circuit board to which the chip may be affixed. An output power of the power amplifiers may be adjusted by configuring a bias voltage on the leaky wave antennas. The bias voltage may be configured utilizing a DC to DC voltage controller. The bias current may be modulated via one or more switched current sources. The switched current sources may be binary weighted and/or may be current mirrors.

Abstract: A signal transmission system includes: a transmitting section including a first carrier signal generating section configured to generate a carrier signal for modulation and a first frequency converting section configured to generate a transmission signal by frequency-converting a transmission object signal by the carrier signal for modulation, the carrier signal for modulation being generated by the first carrier signal generating section; and a receiving section including a second carrier signal generating section configured to generate a carrier signal for demodulation and a second frequency converting section configured to frequency-convert the transmission signal received by the carrier signal for demodulation, the carrier signal for demodulation being generated by the second carrier signal generating section.

Abstract: A system and method are provided for frequency domain peak power reduction on a plurality of orthogonal frequency divisional multiplexing (OFDM) signals in a communications system, wherein frequency domain processing of at least one OFDM signal carrier is iteratively performed to reduce peak power transmissions. OFDM signal carriers can include both in-band sub-carrier signals, and guard-band sub-carrier signals. Each iteration of peak power reduction takes as an input the frequency domain representation of the signal from the previous iteration that has been altered with respect to an error signal also represented in the frequency domain, determines an error signal (in the frequency domain), and subtracts this from the input to produce a further peak power reduced frequency domain signal. If there are no peaks above the configured peak power reduction threshold, then the signal passes through the FPPR iterations with no change.

Abstract: A radio frequency (RF) communications system, which includes power amplifier (PA) control circuitry and PA bias circuitry, is disclosed. The PA control circuitry identifies a selected communications mode of the RF communications system and a target output power from RF PA circuitry. The PA control circuitry selects a PA bias level of a driver stage of the RF PA circuitry and a PA bias level of a final stage of the RF PA circuitry based on the selected communications mode and the target output power. The PA bias circuitry establishes a PA bias level for the driver stage and a PA bias level for the final stage based on the selected PA bias levels of the driver stage and the final stage, respectively.

Abstract: A Symbol vector for RF transmission after multiplexing onto a subset of a set of subcarriers using OFDM is transformed to the time domain. A first time domain cancellation vector is generated from a basis vector that has the same dimensionality as the symbol vector. In the frequency domain the basis vector has a substantially zero value in each of a first subset of sub-carriers of the symbol vector and in the time domain the difference between a first element of the basis vector having the highest value and a second element of the basis vector having the next highest value is maximized. The first cancellation vector is subtracted from the symbol vector to produce modified symbol vector having reduced Peak-to-Average Power Ratio (PAPR). A second cancellation vector is generated using the modified symbol vector and is used to produce a second modified symbol vector having reduced PAPR.

Abstract: A method and apparatus for a non-linear adaptive scheme for transmit out of band emission cancellation is provided. Embodiments disclosed herein provide a method for removing unwanted transmitter emissions from a composite received signal. The method performs the steps of: extracting the I and Q samples from a modulator output; inputting the I and Q samples to a non-linear filter; applying weights to the non-linear filter outputs, combining the non-linear filter outputs to generate a broadband emission estimate; selecting a portion of a transmit emission in a desired portion of a receive band; subtracting an output of the non-linear filter from a composite signal; and feeding back a residual error to the non-linear filter; adapting the non-linear filter iteratively.

Abstract: The present disclosure provides a method of generating codebook in a wireless communication system with multiple antenna arrays, as well as a wireless communication system, base station and terminal using the codebook for communication. The method comprises steps of: providing a basic codebook which contains multiple pre-coding matrices; and assigning phase offsets to certain pre-coding matrices in the basic codebook to form a codebook with phase offset. The feedback overhead from a client to a base station side is reduced and a good precision of feedback for multi-antenna array is kept by applying the method of generating codebook and using the generated codebook in the wireless communication system, base station and terminal.

Abstract: Methods, systems, and devices are described for thermal management of a wireless communication device. The described techniques may be used, for example, to monitor an operating temperature of the device to determine if the operating temperature has exceeded a threshold value. Other aspects may provide for monitoring of a PA temperature, a transmission power level, and/or input from one or more additional sensors associated with the wireless communication device. Based on any of the above inputs, alone or in combination, an operating temperature of the wireless communication device may be determined When the temperature exceeds the threshold value, a transmission antenna can be switched from a first antenna to a second antenna. Additional aspects may provide for reduction of the transmission power level in response to the operating temperature exceeding the predetermined threshold value.

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: A semiconductor device is provided with a power supply circuit having a function to generate a power supply voltage from a wireless signal and an A/D converter circuit having a function to detect the strength of the wireless signal by an A/D conversion of a voltage generated from the wireless signal. This enables to provide a semiconductor device which does not require replacement of batteries, has few limitations on its physical shape and mass, and has a function to detect a physical position. By formation of the semiconductor device with use of a thin film transistor formed over a plastic substrate, a lightweight semiconductor device, which has flexibility in physical shape and a function to detect a physical location, can be provided at low cost.

Abstract: An envelope detector includes an input receiving a digital input signal indicative of a magnitude of a signal to be amplified by a power amplifier. A circuit is provided for generating an analog envelope signal based on the digital input signal. The envelope detector includes an output for outputting the analog envelope signal.

Abstract: According to one embodiment, a buffer circuit has a capacitor comprising a first terminal and a second terminal, an input signal being inputted to the first terminal, a first inverting amplifier circuit configured to invert and amplify a signal of the second terminal of the capacitor, a second inverting amplifier circuit configure to invert and amplify an output signal of the first inverting amplifier circuit, and a MOS (Metal Oxide Semiconductor) transistor comprising a third terminal, a fourth terminal and a gate, the third terminal being connected to the second terminal of the capacitor, the fourth terminal being connected to a connection node of the first and the second inverting amplifier circuits, an inversion signal of the input signal being inputted to the gate.

Abstract: A wireless communication method and apparatus using adaptive transmission polarization control are provided. The wireless communication apparatus includes an orthogonal polarization antenna, a channel state estimator, and a transmission polarization state (TPS) selector. The orthogonal polarization antenna receives at least one reference signal. The channel state estimator estimates a wireless polarization channel on the basis of the reference signal. The TPS selector selects a TPS corresponding to the estimated wireless polarization channel from among a plurality of predefined TPSs, and feeds back the selected TPS information. Accordingly, the wireless communication apparatus feeds back information for polarization control using minimum uplink wireless resources, and maximizes a transmission capacity on the basis of the feedback information.

Abstract: The present disclosure relates to RF front-end (RFFE) circuitry that includes multiple RFFE circuits, each of which may be provided by a separate integrated circuit (IC), front-end module, or both. As such, the RFFE circuits may be connected to one another using an RFFE serial communications bus. Further, one or more of the RFFE circuits may need an accurate clock source for analog-to-digital conversion (ADC), digital-to-analog conversion (DAC), calibration, sensor measurements, or the like. Instead of including an integral clock source circuit or receiving a separate external clock signal, an RFFE circuit may extract clock information from the RFFE serial communications bus to provide one or more clock signals. The clock information may be associated with one or more serial communications commands via the RFFE serial communications bus, may be associated with alternate functionality of the RFFE serial communications bus, or both.

Abstract: A front end radio architecture (FERA) with power management is disclosed. The FERA includes a first power amplifier (PA) block having a first-first PA and a first-second PA, and a second PA block having a second-first PA and a second-second PA. First and second modulated switchers are adapted to selectively supply power to the first-first PA and the second-first PA, and to supply power to the first-second PA and the second-second PA, respectively. The first and second modulated switchers have a modulation bandwidth of at least 20 MHz and are both suitable for envelope tracking modulation. A control system is adapted to selectively enable and disable the first-first PA, first-second PA, the second-first PA, and the second-second PA. First and second switches are responsive to control signals to route carriers and received signals between first and second antennas depending upon a selectable mode of operation such as intra-band or inter-band operation.

Abstract: A PAPR determining device includes a detecting unit and a PAPR determining unit. The detecting unit detects a predetermined value's changes, which is a cause of changes in a saturation power of a power amplifier. When the detecting unit detects any change in the predetermined value, the PAPR determining unit determines a PAPR value that corresponds to the saturation power of the power amplifier.

Abstract: A III-N semiconductor channel is formed on a III-N transition layer formed on a (111) or (110) surface of a silicon template structure, such as a fin sidewall. In embodiments, the silicon fin has a width comparable to the III-N epitaxial film thicknesses for a more compliant seeding layer, permitting lower defect density and/or reduced epitaxial film thickness. In embodiments, a transition layer is GaN and the semiconductor channel comprises Indium (In) to increase a conduction band offset from the silicon fin. In other embodiments, the fin is sacrificial and either removed or oxidized, or otherwise converted into a dielectric structure during transistor fabrication. In certain embodiments employing a sacrificial fin, the III-N transition layer and semiconductor channel is substantially pure GaN, permitting a breakdown voltage higher than would be sustainable in the presence of the silicon fin.

Abstract: A method for specifying utility in an information delivery system having data sources and receiving nodes includes specifying utility for a set of possible information delivery patterns of data samples, where the specification of the utility depends on characteristics of delivery patterns observed by a receiving node, if any, located at a specified location.

Abstract: In a particular embodiment, a method of generating in-phase (I) and quadrature-phase (Q) signals includes generating a first I output signal based on a first I input signal, a second I input signal, a first Q input signal, and a second Q input signal. The method further includes generating a second I output signal based on the first I input signal, the second I input signal, the first Q input signal, and the second Q input signal. A first Q output signal is generated based on the first I input signal, the second I input signal, the first Q input signal, and the second Q input signal. A second Q output signal is generated based on the first I input signal, the second I input signal, the first Q input signal, and the second Q input signal. According to further embodiments, an apparatus is disclosed.

Abstract: Methods and systems for transmitting and receiving data using audio devices but without being detectable by a human ear are disclosed. For example, a device for transmitting data can include a modulator configured to transform digital data into a modulated signal having a frequency no less than about 20 kHz, and an audio transmitter coupled to an output of the modulator configured to transmit the modulated signal into a sound propagating medium without being detected by a human ear. The methods and systems can be used to perform two-factor authentication for permitting a user to access a remote server or other device.

Abstract: A transmit circuit includes a power amplifier configured to amplify an RF input signal to obtain an RF output signal, and an antenna tuner configured to transform an antenna impedance to an impedance at an input of the antenna tuner, wherein the input of the antenna tuner is coupled to an output of the power amplifier. The transmit circuit further includes a bias controller configured to control a bias of the power amplifier, wherein the bias controller is configured to provide a bias control signal to adjust the bias of the power amplifier based on a determination of a measure of a load impedance provided to the power amplifier by the antenna tuner.

Abstract: An apparatus and method for processing digital broadcast signal are provided. The method for processing a broadcast signal includes forming a data group having mobile broadcast service data, where forming the data group includes mapping the mobile broadcast service data into corresponding locations of the data group, adding known data sequences and signaling data into the data group, inserting place holder bytes for MPEG header and non-systematic Reed-Solomon (RS) parity, and de-interleaving data of the data group having the mobile broadcast service data, known data sequences, signaling data and place holder bytes, and formatting mobile broadcast service data packets including the de-interleaved data of the data group, where formatting the mobile broadcast service data packets includes removing place holder bytes for the non-systematic RS parity, and replacing place holder bytes for the MPEG header with the MPEG header.

Abstract: A method and arrangement for transmitting and receiving RF signals, associated with different radio interfaces of communication systems, employ a direct conversion based transceiver which substantially comprises one receive signal branch and one transmit signal branch. Mixing frequencies of the different systems are generated by a single common by use of an output frequency divider in combination with the synthesizer, and by use of filtering corresponding to a system channel bandwidth by means of a controllable low-pass filter operating at baseband frequency.

Abstract: A communications device, in one aspect as a portable wireless communications device, includes an in-phase modulator and power amplifier that receives a baseband I signal and modulates and amplifies the I signal. A quadrature modulator and power amplifier receives a baseband Q signal and modulates and amplifies the Q signal. A power combiner sums and outputs the I and Q signals. An I demodulator circuit receives a signal fed back from the I power amplifier and demodulates the fed back signal to produce demodulated I signals. A Q demodulator circuit receives a signal fed back from the Q power amplifier and demodulates the fed back signal to produce demodulated Q signals. A processor compares the digital, baseband I and Q signals with a demodulated I and Q signals to compensate for amplitude, frequency and phase modulation errors.

Abstract: The present invention relates to a 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: The present invention relates to a communication method, system and signal, and in particular to a method and system for communicating information in a digital signal. It has particular application to satellite or terrestrial packet-based multi-user radio communication systems. A method for communicating information in a digital signal comprising data symbols is disclosed, wherein the information is encoded in a sequence characteristic of pilot symbols distributed amongst the data symbols, such that a receiver is able to determine the sequence characteristic and retrieve the transmitted information. The invention allows information to be encoded into a sequence characteristic of pilot symbols, rather than relying on modulating such information onto the pilot symbols themselves. This allows a significantly larger number of pieces of information to be transmitted than hitherto possible, and the technique is more resistant to large frequency errors than prior techniques.

Abstract: Exemplary embodiments are directed to a transmitter with a power amplifier and a switched output matching circuit implementing a plurality of output paths for a plurality of operating modes is described. The power amplifier receives an input RF signal and provides an amplified RF signal. An output matching network performs impedance transformation from low impedance at the power amplifier output to higher impedance at the matching network output. The plurality of output paths are coupled to the output matching network. Each output path provides a different target output impedance for the power amplifier and routes the amplified RF signal from the power amplifier to an antenna when that output path is selected. Each output path may include a matching network coupled in series with a switch. The matching network provides the target output impedance for the power amplifier when the output path is selected. The switch couples or decouples the output path to/from the power amplifier.

Abstract: A configurable transceiver may include a configurable receiver, a configurable transmitter, and a digital signal processor (DSP). One or more components of the configurable receiver and/or the configurable transmitter may be a block that includes an array of components, such as an array of amplifiers, an array of filters, etc. The DSP may determine a configuration of the configurable receiver that satisfies a bit error rate threshold and minimizes power consumption. The DSP may configure the blocks of the configurable receiver in accordance with the determined configuration of the configurable receiver. The DSP may receive an indication of a modulation scheme being used for transmitted data and may determine a configuration of the configurable transmitter for the modulation scheme that satisfies an error vector magnitude threshold and minimizes power consumption. The DSP may configure the blocks of the configurable transmitter in accordance with the determined configuration of the configurable transmitter.

Abstract: A transmission apparatus transmits a part of a message by a first protocol and a remainder of the message by a second protocol to the reception side, and further transmits a processing module for receiving the remainder on the reception side by the second protocol, to the reception side by the first protocol. The transmission apparatus controls the transmission of the remainder to transmit the remainder of the message to the reception side by the second protocol in a state where the reception side can perform reception.

Abstract: A communication device communicates with other communication devices in a wireless network using a first and a second frequency band. In accordance with some embodiments, inter-band beamforming assistance may be provided by the lower frequency band.

Abstract: A programmable controller and software that monitors periods an RF transmitter is active and a output power level during those periods of activity. These two values are multiplied together and accumulated over time to provide a value for the RF emissions for some period. A limit is set for the RF emissions for any period and if the RF emissions exceeds (or is expected to exceed given the current rate) the set limit, the system limits the subsequent emissions to not exceed the set limit. This reduction in emissions rate come at the cost of a small performance reduction.

Abstract: A method for controlling a multimedia system on an automobile that includes at least one module for executing a multimedia function, having at least one operation state controlled by an action of the user on an interface. The multimedia system includes a prestart state in which at least one prescribed task of the module that does not require any action by the user is initiated, a detection mechanism monitors the occurrence of a vehicle opening or unlocking event, the module is temporarily set in the prestart state following the detection of the event, the module being capable, when in the prestart state, of being switched to the operation state when the user acts on the interface.

Abstract: A system, such as a transceiver, for controlling an adjustable power level includes first and second power detectors, a network of attenuators, a compensator, a comparator, and a controller. The first power detector measures the power of a signal. The network of attenuators receives the signal and generates an attenuated signal. The compensator receives the attenuated signal and generates a compensated signal. The second power detector measures the power of the compensated signal. The comparator receives the respective outputs from the first and second power detectors and generates a first error signal. The controller enables the fixed attenuation, correspondingly adjusts the variable attenuation, receives a second error signal, and provides a control signal to the network of attenuators to nullify an attenuation mismatch introduced between the fixed attenuation and the variable attenuation. A corresponding method for controlling an adjustable power level is also disclosed.