Abstract: Systems and methods are provided that may be implemented to modify information of an audio data transmission based on one or more measured signal reception and/or transmission characteristics of a radio frequency (RF) signal data transmission that contains or otherwise conveys the audio data transmission. The modified audio data may then be acoustically reproduced in analog form as sound waves. Examples of signal reception characteristics of a RF signal data transmission that may be measured and used as a basis for modifying information of audio data of an audio data transmission include, but are not limited to, time Difference of Arrival (TDOA), Angle of Arrival (AoA), measured received signal strength, etc. Example signal transmission characteristics of a RF signal that may be measured and used as a basis for modifying information of audio data include, but are not limited to, Angle of Departure (AoD).

Abstract: A user equipment (UE) may communicate using different radio access technologies on adjacent frequency bands. The UE may determine that the UE is not receiving wireless signals for a second radio access technology that utilizes a second frequency band adjacent to a first frequency band for a first radio access technology. The UE may place a transmitter of the UE in a filter bypass mode in which a transmit signal bypasses a transmit filter for the first radio access technology in response to determining that the wireless signals for the second radio access technology are not received. The UE may scan, using a receiver for the second radio access technology, while in the filter bypass mode, the second frequency band for a signal for the second radio access technology between scheduled transmissions for the first radio access technology.

Abstract: A system filters out-of-band radio frequency emissions generated by wireless transmission of a first signal by a first transmitter from a wireless transmission of a second transmitter. The first signal is communicated from the first transmitter to the second transmitter via one or more wired connections. An out-of-band portion of a modulated format of the first signal is inverted to generate an inverted out-of-band component signal. The inverted out-of-band component signal is combined with a second signal of the second transmitter to create a filtering second signal. The filtering second signal is wirelessly transmitted from the second transmitter concurrently with wireless transmission of the first signal by the first transmitter, wherein the wireless transmission of the inverted out-of-band component signal in the filtering second signal by the second transmitter is synchronized with the wireless transmission of the first signal by the first transmitter.

Abstract: A radio frequency (RF) receiver circuit is disclosed. The RF receiver circuit includes a variable gain amplifier, configured to receive an input RF signal, and to generate an amplified RF signal based on the input RF signal, where a gain of the variable gain amplifier is variable. The RF receiver circuit also includes an RF level indicator circuit, configured to sample the amplified RF signal at non-periodic sampling intervals to generate a plurality of sampled RF signals, and to compare the sampled RF signals with one or more thresholds to generate a plurality of comparison result signals. The gain of the variable gain amplifier is determined based at least in part on the comparison result signals.

Abstract: A receiver including a plurality of primary antennas configured to receive a plurality of first carrier signals corresponding to at least a first frequency band; a plurality of diversity antennas configured to receive a plurality of second carrier signals corresponding to at least a second frequency band; a first local oscillator configured to generate a first oscillation signal; a first load circuit pair connected to the first local oscillator, and configured to frequency down-convert at least one of the plurality of first carrier signals, and having a first load circuit and a second load circuit adjacent to the first load circuit; and a second load circuit pair connected to the first local oscillator, configured to frequency down-convert at least of the plurality of second carrier signals, and having a third load circuit and a fourth load circuit adjacent to the third load circuit.

Abstract: The gain of an amplifier in a receiver operating in a cellular communication system is controlled by determining one or more gain variability metrics, which are then used to produce first and second threshold values. A frequency difference between a current carrier frequency and a target carrier frequency is ascertained and then compared to the threshold values. Target gain setting production is based on comparison results: If the frequency difference is larger than the first threshold, a first automatic gain control algorithm is performed; if the frequency difference is smaller than the first threshold and larger than the second threshold, a second automatic gain control algorithm is performed, wherein the second automatic gain control algorithm uses a current gain setting as a starting point; and if the frequency difference is smaller than both the first and second thresholds, the current gain setting is used as the target gain setting.

Abstract: A circuit includes an in-phase/quadrature down converter configured to be coupled to an antenna of a first NFC (near field communication) device. DC cancellation circuitry is coupled at outputs of the converter. Detection circuitry is configured to analyze DC signals output by the DC cancellation circuits to detect the presence of a second NFC device.

Abstract: Methods, systems, and computer program products that infer and correct automatic gain compensation (AGC) values over time are described. A device emits a series of inaudible reference audio signals during recording. The reference audio signals have a constant amplitude. A microphone of the device records the reference audio signals while recording audio content. The device may apply AGC during the recording. An AGC inference module receives the recorded signals and extracts a representation of the reference audio signals, which have been subject to the AGC. The AGC inference module determines variations in levels of the extracted representation of the reference audio signals over time. Based on the variations, the AGC inference module infers the AGC applied to the recording over time. The AGC inference module can then provide the AGC for reading, or undo effects of the AGC applied to the audio content.

Abstract: A disclosed feature of the present specification is to provide a method for transmitting a hybrid automatic repeat request (HARQ) acknowledgement/negative-acknowledgement (ACK/NACK) signal using a sidelink. The method may comprise the steps of: receiving from a transmission terminal data in a first time section within a sidelink subframe n; and transmitting a HARQ ACK/NACK signal in a second time section within the sidelink subframe n. A gap may exist between the first time section and the second time section in the sidelink subframe n. The gap can be used for switching between reception and transmission.

Abstract: A vehicle and an audio processing method for the same are provided to allow a sound level output through a speaker to be maintained at a preset sound level by adjusting a volume of a power amplifier to a constant value based on modulation information of a received broadcast signal. The audio processing method includes receiving a broadcast signal and obtaining modulation information of the broadcast signal and determining volume information of the broadcast signal based on the modulation information. A volume of a power amplifier is adjusted based on the determined volume information to adjust an output sound level of the broadcast signal to correspond to a preset output sound level.

Abstract: Technologies directed to a wireless device with a Radio Frequency (RF) Decibel-Scaled Wireless Interference Detector that provides accurate energy readings of a channel through decibel-scaled output voltage are described. One method of the wireless device includes receiving a first RF signal via an antenna and converting the first RF signal to a multiple samples using a sampling rate, each sample including a digital value of a decibel-scaled output voltage. The method converts each of the samples to an energy value using a voltage-to-energy lookup table and determines a congestion level of a channel using the energy values.

Abstract: Switchless carrier aggregation. In some embodiments, a carrier aggregation circuit can include a first filter configured to allow operation in a first frequency band, and a second filter configured to allow operation in a second frequency band. The circuit can further include a first signal path implemented between the first filter and an output node, with the first signal path including a plurality of amplification stages configured to amplify a first signal. The first signal path can be substantially free of switches. The circuit can further include a second signal path implemented between the second filter and the output node, with the second signal path including a plurality of amplification stages configured to amplify a second signal. The second signal path can be substantially free of switches.

Abstract: A receiving circuit, a transmission circuit and a system capable of reducing the effect of noise are provided. The receiving circuit includes: a pulse width detection unit which determines whether or not the pulse width of a pulse signal outputted based on comparison between a received-signal voltage and a reference voltage is smaller than a predetermined width; a reference voltage setting unit which, when the pulse width is smaller than the predetermined width, sets the reference voltage to be equal to or higher than a predetermined voltage; and an output control unit which, when the pulse width is equal to or larger than the predetermined width, causes a digital signal based on the pulse signal to be outputted or, when the pulse width is smaller than the predetermined width, performs control not to output the digital signal.

Abstract: A wireless receiver including multiple amplifiers coupled in series for amplifying a signal being received, at least one detector that provides a strength indication of the signal being received, multiple AGC schedules each determining a gain reduction schedule for the amplifiers, an AGC schedule selector that selects one of the AGC schedules based on a schedule select input, and an AGC controller that adjusts a gain of at least one of the amplifiers according to a selected AGC schedule based on the strength indication of the signal being received. The AGC schedules may include a first AGC schedule configured for improved SNR performance and a second AGC schedule configured for improved distortion performance. The second AGC schedule may be selected for improved distortion performance when a strong distorting blocker signal is present, and otherwise the first AGC schedule may be selected for better SNR performance.

Abstract: The present subject matter relates to devices, systems, and methods that provide a programmable filter response in a wireless frequency division duplex system. In particular, in some embodiments, a tunable diplex filter for such a system includes a first tunable filter in communication between an input node and a first output node, the first tunable filter being tunable to define a first tunable pass band configured to have a minimum pass band insertion loss at frequencies that are higher than a first reject band, and a second tunable filter in communication between the input node and a second output node, the second tunable filter being tunable to define a second tunable pass band configured to have a minimum pass band insertion loss at frequencies that are lower than the first reject band.

Abstract: A communication method, a base station, and a terminal, which are applied to the communications field, to resolve a problem in the prior art that the terminal cannot obtain a frequency-time pattern of a discovery time period when an interval between two consecutive discovery time periods is long. The method includes: generating, by a base station, an identifier of a current discovery frame of a current discovery time period; and broadcasting, by the base station, the identifier of the current discovery frame of the current discovery time period, so that a terminal that receives the broadcast sent by the base station acquires, according to the identifier, in the broadcast, of the current discovery frame of the current discovery time period, a frequency-time pattern of the current discovery time period or a frequency-time pattern of a discovery time period that is after the current discovery time period.

Abstract: A method for modeling, designing, and/or optimizing a wireless power transfer system, such as a resonant power transfer system. The method may be based on artificial intelligence or expert systems. A computer program product for optimizing a power transfer system is also disclosed.

Abstract: In one example, a receiver includes: a low noise amplifier (LNA) to receive and amplify a radio frequency (RF) signal, the LNA having a first controllable gain; a mixer to downconvert the RF signal to an intermediate frequency (IF) signal; a programmable gain amplifier (PGA) coupled to the mixer to amplify the IF signal, the PGA having a second controllable gain; a digitizer to digitize the IF signal to a digitized signal; a digital signal processor (DSP) to process the digitized signal; a first detector to output a first detection signal having a first value in response to the IF signal exceeding a first threshold during a first detection period; and a controller to dynamically update a gain setting of one or more of the LNA and the PGA in response to the first detection signal.

Abstract: Systems and techniques are described for mitigating interference in wireless communication devices. In various examples, a device may determine a first energy level of a first received wireless signal and may determine that the first energy level is above a first threshold. The device may attenuate the first received wireless signal by a first amount. The device may filter the first received wireless signal with a band pass filter with a first passband frequency range. The device may be effective to program the band pass filter with the first passband frequency range based on the detected first energy level exceeding the first threshold.

Abstract: A front end module (FEM) and associated method for receiving signals in a front end module are disclosed. Some embodiments of the FEM have three inputs. The FEM can process the input signals in one of three bypass modes. In bypass modes, switchable tank circuits provide a high impedance to isolate active components from the bypass path. This improves the input return loss in the passive bypass mode and thus improves the performance of the passive bypass mode by allowing the use of LNAs without an input switch. In the active gain mode, one of a plurality of signals are amplified by one of an equal number of amplifiers coupled to the FEM output. Accordingly, the FEM can output signals applied to any one of the FEM inputs in bypass mode, or an amplified version of one of the input signals. In some embodiments, the FEM has only one input and one LNA. In such embodiments, an output selector switch selects between a bypass path and a gain path.

Abstract: A system and method for implementing controls corresponding to a particular mobile device. The method includes receiving from a first party corresponding to the particular mobile device a designation of a second party and receiving control instructions from the second party. A particular geographic area and/or a particular time frame is associated with the second party. A processor alternately delegates one or more device controls of the particular mobile device from the first party to the second party based on a current location of the particular mobile device relative to the particular geographic area and/or a current time relative to the particular time frame. The control instructions received from the second party are applied when the one or more device controls are delegated to the second party.

Abstract: A method of operating an electronic device in a neighbor awareness networking (NAN) cluster and an electronic device thereof are provided. The method includes receiving, from another electronic device in the NAN cluster, via a direct communication path, a NAN service discovery frame (SDF) including information for indicating at least one discovery window (DW) among a plurality of DWs, when the other electronic device operates in an awake mode, and switching, based on the received information, an operation mode from a sleep mode to the awake mode in the at least one DW among the plurality of DWs.

Abstract: A portable communication device having a transceiver unit (30) for establishing a wireless communication link (16) using a digital modulation scheme with a packet-based frequency hopping scheme including at least one advertising channel, an antenna (32), an antenna tuning circuit (34) connected to the transceiver unit and the antenna for tuning the antenna, and a control unit (36) for controlling the antenna tuning circuit. The transceiver unit is adapted to estimate the strength of signals received in the at least one advertising channel and to supply the control unit with a signal representative of the estimated signal strength in the at least one advertising channel. The control unit is adapted to control the antenna tuning circuit such that the antenna is tuned according to the signal representative of the estimated signal strength in the at least one advertising channel.

Abstract: Disclosed herein are methods, systems, and processes to secure internal services in a distributed environment. A service call initiated by a client process of a client is intercepted. In this example, the service call is a request for an internal service provided by a server deployed in a target appliance. The client is deployed in a source appliance. The service call includes an identifier, and the identifier identifies the internal service. If one or more rules are specified for the identifier, a service packet is generated by multiplexing client information associated with the client process as well as information in the service call. The service packet is forwarded to the target appliance.

Abstract: Disclosed herein are a Bluetooth signal receiving device and method. The Bluetooth signal receiving device includes an energy detector circuit, a radio frequency (RF) power detector circuit, an analog-digital converter circuit, and an automatic gain control circuit. The energy detector circuit detects a significant signal, having energy higher than background noise by a threshold value or more, from a received signal. The RF power detector circuit detects the magnitude of the received signal. The analog-digital converter circuit converts the analog value of the received signal into a digital value, and outputs the digital value. When the significant signal is detected, the automatic gain control circuit determines any one of predetermined coarse gain intervals to be a first coarse gain interval of the received signal by taking into account the magnitude of the received signal detected by the RF power detection circuit.

Abstract: A power management technique utilizing a method for accurately and rapidly estimating the change in the statistical distribution of data at each block in a communication system leading to or originating from a memory that is experiencing voltage scaling induced errors is disclosed. An appropriate memory supply voltage that maximizes power savings is found by exploiting the available SNR slack while keeping system performance within a required margin.

Abstract: An apparatus, system, and method for performing handover of a mobile station (MS) between a base station (BS) and an access point (AP) are described. In one embodiment, the MS may receive one or more threshold values for reporting measurements to the BS. The MS may convert the threshold values to device-specific threshold values. The MS may determine one or more network quality values associated with the AP. The MS may compare the network quality values to the device-specific threshold values. In response to the network quality values exceeding the device-specific threshold values, the MS may convert the network quality values to calibrated network quality values. The MS may provide the calibrated network quality values. The MS may perform handover from the BS to the AP based on providing the calibrated network quality values to the BS.

Abstract: An example automatic gain control (AGC) circuit includes a base current-gain circuit having a programmable source degeneration resistance responsive to first bits of an AGC code word. The AGC circuit further includes a programmable current-gain circuit, coupled between an input and an output of the base current-gain circuit, having a programmable current source responsive to second bits of the AGC code word. The AGC circuit further includes a bleeder circuit, coupled to the output of the base current-gain circuit, having a programmable current source responsive to logical complements of the second bits of the AGC code word. The AGC circuit further includes a load circuit coupled to the output of the base current-gain circuit.

Abstract: Disclosed are a signal gain control method and device for a TD-HSPA+ terminal device. The method comprises the following steps: when a terminal device is in a continuous packet transmission mode, it is determined whether the terminal device receives a signal from a high speed packet channel for the first time, and if not, it is determined whether a reception interval between two successively received signals is smaller than a preset interval; if the reception interval is not smaller than the preset interval, a gain AGCPCCPCH at a main frequency point of a primary common control physical channel (PCCPCH) of a cell is obtained, and the AGCPCCPCH is used to control a gain of a signal currently received by the terminal device.

Abstract: Methods and apparatus for multiple channel modem and preamble detection. In an example arrangement, a system includes a plurality of communication nodes coupled to one another via an over the air interface, at least one of the communication nodes including an antenna for transmitting and receiving signals on the over the air interface; a radio transceiver coupled to the antenna for receiving signals and having an output for transmitting signal samples; and a dual core processor coupled to the radio transceiver, the dual core processor comprising a first CPU and a second CPU, the first CPU configured to process signals for a first channel within the signal samples received from the radio transceiver, and the second CPU configured to process signals for a second channel within the signal samples received from the radio transceiver. Methods and additional apparatus are also disclosed.

Abstract: Amplifiers with noise splitting to improve noise figure are disclosed. In an exemplary design, an apparatus (e.g., a wireless device, an integrated circuit, etc.) includes a plurality of amplifier circuits and at least one interconnection circuit. The amplifier circuits receive an input radio frequency (RF) signal. The interconnection circuit(s) are coupled between the plurality of amplifier circuits. Each interconnection circuit is closed to short the outputs or internal nodes of two amplifier circuits coupled to that interconnection circuit. The plurality of amplifier circuits may include a plurality of gain circuits coupled to a plurality of current buffers, one gain circuit and one current buffer for each amplifier circuit. Each amplifier circuit provides an output current, which may include a portion of the current from each of the plurality of gain circuits when the plurality of amplifier circuits are enabled.

Abstract: An amplifier module with an output coupler is disclosed. The amplifier module may include a plurality of input terminals and two or more output terminals. Each input terminal may be coupled to an input of an independent amplifier. Outputs from the independent amplifiers may be coupled to the two or more output terminals. The amplifier module may include an output coupler to couple the two or more output terminals together. A signal may be received by a first output terminal and be coupled by the output coupler to a second output terminal. In some embodiments, when the two or more output terminals are coupled together, the independent amplifiers may be made inactive or operated in a minimum gain configuration.

Abstract: Systems and methods for correcting frequency error in a received signal include: receiving a satellite signal, the satellite signal having a bandwidth and a center frequency; determining the profile of the satellite signal; computing the center frequency of the satellite signal based on the profile of the received signal; and generating a reference signal at the computed center frequency. The systems and methods may further include computing a center frequency of each of a plurality of satellite signals based on the computed center frequency. Determining the profile may include sweeping a tuner above and below a given reference frequency; measuring the received signal strength during the sweeping operation; and determining the profile based on the received signal strength.

Abstract: A low voltage DC/DC converter (LDC) control apparatus for controlling an LDC including a transformer and a PWM controller is provided. The low voltage DC/DC converter (LDC) control apparatus includes an input current calculating unit calculating an input current of the LDC by using magnetization inductance information on the transformer and effective duty information on the PWM controller; an output current calculating unit calculating the instantaneous value and average value of an output current based on the input current calculated by the input current calculating unit; and an LDC control unit generating a control signal for over current protection (OCP) or power limit based on the instantaneous value and average value of the output current calculated by the output current calculating unit, wherein the LDC control unit outputs the generated control signal to the PWM controller.

Abstract: An LIF receiver includes a receiver path comprising: a mixer for mixing a received RF signal with a local oscillator signal to provide an IF signal at a lower frequency than the received RF signal, a bandpass filter for filtering the IF signal, a PGA for amplifying the filtered IF signal, an ADC for converting the amplified filtered IF signal to a digital signal, a converter for converting the digital signal to a baseband digital signal, and an AGC for setting a gain of the PGA in response to a magnitude of the received RF signal. A programmable DC signal source injects a programmed DC offset signal into the amplified filtered IF signal converted by the ADC, and a signal sensor, operatively connected to the receiver path after the PGA, determines a polarity of PGA signal output for a programmed DC offset signal. A controller determines a programmed DC offset signal minimizing a magnitude of the baseband signal in the absence of a received RF signal for at least one gain setting of the PGA.

Abstract: An RFID tag writing system has an antenna configured to transmit a write signal towards plural RFID tags and receive response signals generated by the RFID tags in response to the write signal, and a controller configured to control the antenna. The controller includes a mode setting unit configured to set a mode of the RFID writing system as either a manual mode or an auto mode, a manual setting unit configured to allow a user of the RFID tag writing system to determine a receiving condition according to which the response signals are to be processed or a writing condition according to which the write signal is to be transmitted to the RFID tags, if the manual mode is set by the mode setting unit, and an auto setting unit configured to determine the receiving condition or the writing condition if the auto mode is set by the mode setting unit.

Abstract: A current mode receiver front end for a radio device converts a received signal into a current mode signal and applies automatic gain control by both shunting current of the current mode signal and providing an adjustable series resistance that further adjust the current level of the current mode signal that is output by the receiver front end. The shunt and series circuits can be controlled by a digital control word whose value represent a decibel value of adjustment, and which is used to drive the shunt and series circuits to achieve both coarse and fine adjustment of the current mode signal.

Abstract: Architecture that enables wireless narrowband devices (e.g., wireless microphones) and white space devices to efficiently coexist on the same telecommunications channels, while not interfering with the usability of the wireless narrowband device. The architecture provides interference detection, strobe generation and detection and, power ramping and suppression (interference-free coexistence with spectrum efficiency). The architecture provides the ability of the white space device to learn about the presence of the microphone. This can be accomplished i using a geolocation database, reactively via a strober device, and/or proactively via the strober device. The strober device can be positioned close to the microphone receiver and signals the presence of a microphone to white space devices on demand.

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

Abstract: A contactless, electromagnetic (EM) replacement for cabled Standards-based interfaces (such as USB, I2S) which handles data transfer requirements associated with the Standard, and capable of measuring and replicating relevant physical conditions on data lines so as to function compatibly and transparently with the Standard. A contactless link between devices having transceivers. A non-conducting housing enclosing the devices. A dielectric coupler facilitating communication between communications chips. Conductive paths or an inductive link providing power between devices. An audio adapter communicates over a contactless link with a source device, and via a physical link with a destination device such as a conventional headset. Power may be provided to the adapter from the source device, and by the adapter to the destination device.

Abstract: A communication device, such as a smart phone, includes an envelope tracking power supply that provides a voltage supply signal for a power amplifier. The envelope tracking signal input to the envelope tracking power supply arises from application of a shaping table on a desired transmit signal. The shaping table implements non-uniform gain compression across a range of output powers, and in particular may aggressively compress the power amplifier for low output powers, and less aggressively compress the power amplifier at high output powers. The non-uniform gain implemented via the shaping table may provide significant power savings, while still allowing the transmitter to meet spectral mask requirements.

Abstract: According to one embodiment, a receiver, which is configured to receive a radio signal having a preamble including a synchronization pattern and a payload containing data, includes an antenna, a low noise amplifier, a down-conversion module, a variable gain amplifier, an auto gain controller, a synchronization acquisition module, and a demodulator. The antenna is configured to receive the radio signal. The low noise amplifier is configured to amplify an output from the antenna by applying a first variable gain. The down-conversion module is configured to down-convert an output from the low noise amplifier. The variable gain amplifier is configured to amplify an output from the down-conversion module by applying a second variable gain. The auto gain controller is configured to, in accordance with strength of the radio signal, firstly adjust the first variable gain, and after fixing the first variable gain, adjust the second variable gain.

Abstract: The present disclosure relates to a circuit for providing a signal gain, comprising: a first stage comprising a first set of variable gain transconductors arranged for receiving an input signal and for performing phase-shifting of the input signal, thereby producing an intermediate signal, and a second stage, comprising a second set of transconductors and a plurality of capacitors arranged for receiving the intermediate signal and for providing an output signal to a combiner, wherein the first stage and second stage together form a filter, and wherein the first set of variable gain transconductors and at least one of the transconductors of the second set define the signal gain of the circuit.

Abstract: A wireless transmit/receive unit (WTRU) is described. The WTRU includes a front-end unit (FEU), a signal processing unit (SPU), and a resource management unit (RMU). The FEU receives a radio frequency (RF) signal, generates time-interleaved samples, an includes: a first array of first time-interleaved samplers, a second array of second time-interleaved samplers, and a third array of third time-interleaved samplers. The SPU receives and combines the plurality of time-interleaved samples and generates a signal quality measurement and in-phase and quadrature-phase (IQ) complex samples. The RMU receives the signal quality measurement and allocates FEU resources in conjunction with a front-end unit controller (FEUC) based on the signal quality measurement. The FEUC generates control signals based on the received signal quality measurement from the RMU.

Abstract: A system is disclosed that may include an Automatic Gain Control (AGC) module configured to automatically adjust the gain of a receiver, which is configured to receive a signal. The signal includes a number of commands, which have a characteristic command length and a characteristic command interval. The command length may have a substantially shorter duration than the command interval. The system may also include a slicer configured to interface to a command processor. The system includes a command processor communicatively coupled with the AGC module and/or the slicer for providing a notification to the AGC module and/or the slicer associated with the ends of the commands. The AGC module is configured to adjust the gain of the receiver and the slicer threshold voltage is updated when the notification is received from the command processor.

Abstract: One embodiment of the present subject matter includes a method of receiving an input signal. The method, in various embodiments, includes detecting a peak of the input signal and detecting an envelope of the input signal. In various embodiments, the peak and envelope are used to identify out-of-band blocking signals and to adjust gain control. The method also includes comparing the peak to a first threshold Tp and comparing the envelope to a second threshold Te. In the method, if the peak is above the first threshold and the envelope is below the second threshold, then ignoring the input signal. If the envelope is above the second threshold, the method includes applying automatic gain control to decode information encoded in the input signal.

Abstract: Some embodiments of the present disclosure relate to multiband receivers that include at least one divider unit having a divisor that is other-than-two. For example, in some embodiments the divisor is an odd integer (e.g., three). Such divisors allow oscillators for respective receiver subunits in a multi-band receiver to have frequencies that are sufficiently different from one another so as to limit cross-talk interference there between, even when the receiver subunits are concurrently receiving data on adjacent channels. To facilitate this other-than-two divisor, a phase error compensation block is often used to compensate for the effects of using the other-than-two divisor.

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

Abstract: Embodiments of the present invention may provide a signal processor with a wide gain range. The signal processor may comprise at least a discrete step gain stage and a continuous variable gain amplifier (VGA) stage. The discrete step gain stage may comprise a programmable gain amplifier (PGA) (e.g., low noise amplifiers 1 and 2 (LNA1 and LNA2)). The VGA stage may provide a continuous range to compensate the LNAs gain steps. In one embodiment, the AGC controller enables an inherent hysteresis with the AGC step change if required.

Abstract: A system provides closed-loop gain control in a WCDMA mode and open loop control in an EDGE/GSM mode. Gain control is distributed across analog devices and a digital scaler in a wireless receiver. In the WCDMA mode, a loop filter generates an error signal that is forwarded to analog and digital control paths. The analog control path includes a first adder, a programmable hysteresis element, and a lookup table. The analog control signal is responsive to thresholds, which when used in conjunction with a previous gain value determine a new gain value. The digital control path includes a second adder, a programmable delay element, and a converter. A control word is responsive to a difference of the error signal, a calibration value, and the analog control signal. Blocker detection is provided in the WCDMA mode of operation. A controller sets system parameters using a state machine.