Abstract: A method and system provides an automatic frequency correction (AFC) within a wireless communication device. A synchronization controller estimates first and second frequency errors respectively associated with a first received signal corresponding to a first receiver path and a second received signal corresponding to a second receiver path. The synchronization controller determines a value and a type of target clock of a first AFC associated with the first frequency error. If the first AFC is not generated to target a shared clock such as a reference clock, the synchronization controller generates a second AFC to compensate for the second frequency error. However, if it is determined that the first AFC targets a shared clock, the synchronization controller generates the second AFC to compensate for the first AFC and the second frequency error. The synchronization controller synchronously applies the first and second AFCs to the relevant clocks.

Abstract: Arrangements described herein relate to controlling RF communications by a communication device. Raw sensor data from one or more sensors can be received by a sensor processor. The sensor processor processes the raw sensor data to generate processed sensor data. An application processor processes a portion of the processed sensor data. The application processor is configured to operate in a locked state in which a user is not allowed to alter the at least one secured application and operate in an unlocked state in which the user is allowed to alter the at least one secured application. A portion of the processed sensor data is received from the sensor processor by a communications processor and further processed. The processed sensor data received by the communications processor from the sensor processor is trusted sensor data not affected by the application processor when the application processor operates in the unlocked state.

Abstract: An apparatus comprises a duplexer having a transmit port, a receive port, and an antenna port. A transmitter is coupled to the antenna port of the duplexer. A transmit antenna is coupled to the transmit port of the duplexer. The apparatus may comprise a matching termination coupled to the receiver port.

Abstract: A method (700) and apparatus (600) optimize resource block based transmitter operation in a wireless communication device. The method can include receiving (720) a radio resource assignment including a particular resource block allocation. The method can include configuring (730) a wireless communication transceiver for the particular resource block allocation. The method can include degrading (740) power amplifier distortion of the wireless communication transceiver based on the particular resource block allocation. The power amplifier distortion can be a measure of a deviation of the power amplifier output in an analysis domain from an ideal linear amplifier.

Abstract: A mobile device that operates in a wireless communication network is disclosed. The mobile device includes a transceiver that uses a first wireless communication technology, which can be Long Term Evolution (LTE) technology. The mobile device also includes a modem that coupled to the transceiver through a standard interface and uses a second wireless communication technology, which can be CDMA. The modem processes the received signal from the transceiver and processes a transmit signal for the transceiver. A first receiver first processing circuit has a matching filter to compensate for and resampling the received signal from the receiver so that that the received signal from the transceiver is compatible with the modem. A transmitter processing has a filter for resampling and adjusting a processed transmit signal for the transmitter.

Abstract: An adaptive power amplifier that may be used in a wireless communication device is configured to adjust its load line or output impedance, the number of active amplifier cells in each amplification stage, the bias of the active amplifiers, and the supply voltage input capacitive load in accordance with a supply voltage modulation type provided to the power amplifier. The supply voltage modulation types include ET, APT, DC-DC, dual, multi-state or fixed voltage supply voltages. A supply voltage converter, signaled by a baseband processor, generates the selected type of supply voltage modulation for the adaptive power amplifier. The baseband processor may also provide a control interface signal to a controller within the adaptive power amplifier.

Abstract: A method and system controls a transition between utilizing an envelope tracking (ET) mechanism and using an average power tracking (APT) mechanism to provide power to a power amplifier. A power amplifier controller (PAC) initiates an ET mechanism to track changes in amplitudes of a radio frequency (RF) signal being received by the power amplifier. If the PAC determines that the RF signal bandwidth is low and the average amplitude is at least equal to a threshold value, the PAC maintains the ET mechanism. If the RF signal bandwidth is high and/or the average amplitude of the RF signal is less than the threshold value, the PAC temporarily deactivates the ET mechanism and controls a transition to utilizing the APT mechanism by properly synchronizing the transition to the change in average signal amplitude levels so there are no undesired transients affecting signal quality or spectrum.

Abstract: A method and apparatus provide a wireless communication device multiband tunable radio architecture. The apparatus can include a multiband transceiver configured to transmit and receive wireless communication signals. The apparatus can include a tunable transmit notch filter coupled to the multiband transceiver. The tunable transmit notch filter can provide low insertion loss in a transmit band and attenuation at a receive frequency. The apparatus can include a tunable circulator coupled to the tunable transmit notch filter. The tunable circulator can provide transmit to receive isolation. The apparatus can include a tunable receive filter coupled to the multiband transceiver. The tunable receive filter can provide low insertion loss at a receive frequency and attenuation at other frequencies.

Abstract: A method is performed in an electronic device for emphasizing frequency blocks containing priority data. The method includes: determining to communicate data in a plurality of allocated frequency blocks; identifying a first subset of the plurality of allocated frequency blocks that contain data having a higher priority than data in a second subset of the plurality of allocated frequency blocks; and emphasizing, during data communication, the first subset of the plurality of allocated frequency blocks, which contain the data having the higher priority, over the second subset of the plurality of allocated frequency blocks.

Abstract: A method, performed in a communication device having multiple transmitters, for selectively transmitting data using spatial diversity, includes determining a type of data to be transmitted, determining whether the type of data meets a data type criteria, which comprises determining whether the data includes priority data, and transmitting the data using spatial diversity when the type of data meets the data type criteria.

Abstract: A method and system mitigates receiver desensitization caused by a reverse inter-modulation distortion (IMD) signal generated by a power amplifier associated with one of at least two concurrently operating transmitters. A power amplifier controller (PAC) determines whether at least one power amplifier operating in a first operating state generates a reverse IMD signal that can substantially interfere with at least one receive channel due to a concurrent operation of at least two concurrently operating transmitters. In response to determining that at least one power amplifier generates the reverse IMD signal when in the first operating state, the PAC initiates a second operating state of the power amplifier to increase the linearity of the at least one power amplifier in order to reduce the reverse IMD signal. The PAC initiates the second operating state by adjusting parameters of the power amplifier.

Abstract: A radio frequency (RF) communication device comprises a first signal propagating circuit and a second signal propagating circuit, which together enables simultaneous transmission. The first signal propagating circuit is configured with a first tunable notch filter within a first transmit path and the second signal propagating circuit is configured with a second tunable notch filter within a second transmit path. A controller is communicatively coupled to a respective first tuning component and second tuning component of the tunable notch filters. The controller selectively tunes at least one of the tunable notch filters during signal propagation to produce a specific combined notch filtering response that reduces a level of IMD on at least one receive carrier frequency of at least one propagating signal. Aspects of the disclosure also provide a method for making the communication device.

Abstract: A method and system mitigates receiver desensitization caused by a reverse inter-modulation distortion (IMD) signal generated by a power amplifier associated with one of at least two concurrently operating transmitters. A power amplifier controller (PAC) determines whether at least one power amplifier operating in a first operating state generates a reverse IMD signal that can substantially interfere with at least one receive channel due to a concurrent operation of at least two concurrently operating transmitters. In response to determining that at least one power amplifier generates the reverse IMD signal when in the first operating state, the PAC initiates a second operating state of the power amplifier to increase the linearity of the at least one power amplifier in order to reduce the reverse IMD signal. The PAC initiates the second operating state by adjusting parameters of the power amplifier.

Abstract: A method and system provides an automatic frequency correction (AFC) within a wireless communication device. A synchronization controller estimates first and second frequency errors respectively associated with a first received signal corresponding to a first receiver path and a second received signal corresponding to a second receiver path. The synchronization controller determines a value and a type of target clock of a first AFC associated with the first frequency error. If the first AFC is not generated to target a shared clock such as a reference clock, the synchronization controller generates a second AFC to compensate for the second frequency error. However, if it is determined that the first AFC targets a shared clock, the synchronization controller generates the second AFC to compensate for the first AFC and the second frequency error. The synchronization controller synchronously applies the first and second AFCs to the relevant clocks.

Abstract: A method and system performs antenna tuning to minimize interference affecting signal reception within a wireless communication device. An antenna tuner controller determines whether the wireless communication device concurrently provides (a) simultaneous signal transmission and reception and (b) dual signal propagation. In response to determining that the wireless communication device concurrently provides the simultaneous signal transmission and reception and the dual signal propagation, the antenna tuner controller determines a current mode of operation corresponding to simultaneous signal transmission and reception and the dual signal propagation. Based on the mode of operation determined, the antenna tuner controller identifies a priority for performing antenna isolation to minimize interference affecting signal reception when the wireless communication device actively communicates within the specific mode of operation.

Abstract: Various embodiments of methods and apparatus' for compensating for a phase shift on a communication device are described herein. In an embodiment, an antenna of a communication device is tuned based on a characteristic of the communication device, thereby causing a phase shift of a signal that is to be transmitted via the antenna. A property of the signal at the antenna after the phase shift is measured. The phase shift is compensated for based on the measured property.

Abstract: A method and apparatus for compensating is described, in which a tuning network is electrically coupled to an antenna and to a phase shift network. Baseband signals travel to and from the phase shift network. A controller communicatively linked to the tuning network and to the phase shift network receives data regarding the state of a communication device. The controller changes the impedance of the tuning network, and changes the phase shift of the phase shift network based on the received data. The received data may include information regarding the channel, band, or sub-band on which a communication device is communicating; information regarding on the application state of the device; information regarding the modulator and demodulator state of the device; and information regarding the state of the communication device's antenna.

Abstract: A method and apparatus for compensating is described, in which a tuning network is electrically coupled to an antenna and to a phase shift network. A controller communicatively linked to the tuning network and to the phase shift network receives data regarding the state of a communication system. The controller changes the impedance of the tuning network, and changes the phase shift of the phase shift network based on the received data. The received data may include information regarding the channel, band, or sub-band on which a communication device is communicating; information regarding on the application state of the device; and the modem state of the device.

Abstract: A method in a wireless communication transmitter including a baseband processor (310) that configures the transmitter for a particular signal configuration, and a headroom controller (350) for adjusting transmitter headroom based on the particular signal configuration. In one embodiment, the headroom is controlled based on a power metric, for example, a 3rd order polynomial or a peak to average ratio (PAR) metric, that is a function of the signal configuration. In another embodiment, the headroom is adjusted using information in a look up table.

Abstract: A method (700) and apparatus (600) optimize resource block based transmitter operation in a wireless communication device. The method can include receiving (720) a radio resource assignment including a particular resource block allocation. The method can include configuring (730) a wireless communication transceiver for the particular resource block allocation. The method can include degrading (740) power amplifier distortion of the wireless communication transceiver based on the particular resource block allocation. The power amplifier distortion can be a measure of a deviation of the power amplifier output in an analysis domain from an ideal linear amplifier.