Abstract: System and method for detecting radio frequency (RF) saturation in a wireless device configured to simultaneously receive first signals according to a first wireless protocol and second signals according to a second wireless protocol. Signals having components of both the first and second signals may be received at a shared gain element. A level of saturation of the shared gain element may be determined. A current definition of a saturation event may be determined. A gain adjustment value may be determined based on the level of saturation and the current definition of a saturation event. A gain value of the shared gain element may be adjusted by the determined gain adjustment value.

Abstract: A system is disclosed with a first transceiver configured to communicate with a second transceiver. The first transceiver includes a message encoded by a spreading code and a transmitter configured to use beam forming to send the message as a beamformed transmit message to the second transceiver in one of multiple regions repeatedly targeted by the beam forming. The transceivers include a receiver configured to operating without beam forming in receiving to decode the message using the spreading code with a spreading length to compensate for the lack of beam forming. Other embodiments may include an integrated circuit with a processor operating a transmitter and a receiver of the first or the second transceiver. The integrated circuit may act as a central point, a base station and/or an access point communicating with a client, or operate the transceiver as the client, a station or as a cellular phone.

Abstract: A signal analysis mechanism for processing and classifying an RF signal received at a WLAN device. A plurality of spectral data captures comprising time-frequency data and receive signal strength indicator (RSSI) data associated with the RF signal received at the WLAN device are generated. The time-frequency and RSSI data of each of the plurality of spectral data captures is processed to determine whether each spectral data capture is a narrowband signal capture. If the plurality of spectral data captures are narrowband signal captures, a narrowband interference signal type associated with the received RF signal is determined based, at least in part, on a plurality of parameters associated with the narrowband signal captures.

Abstract: Arbitration between two wireless protocols in a wireless device. The wireless device may include first wireless protocol circuitry, configured to receive and process first signals according to a first wireless protocol and second wireless protocol circuitry, configured to receive and process second signals according to a second wireless protocol. The wireless device may also include coexistence circuitry. The coexistence circuitry may be configured to receive a request from the first wireless protocol circuitry to perform transmission or reception and arbitrate the requested transmission or reception between the first wireless protocol circuitry and the second wireless protocol circuitry. The decision may be based on current or future priority information, current configuration, or other factors. The coexistence circuitry (or other circuitry) may be configured to determine position of switches controlling antennas or transmission using shared or unshared antennas (or chains).

Abstract: Arbitration between two wireless protocols in a wireless device. The wireless device may include first wireless protocol circuitry, configured to receive and process first signals according to a first wireless protocol and second wireless protocol circuitry, configured to receive and process second signals according to a second wireless protocol. The wireless device may also include coexistence circuitry. The coexistence circuitry may be configured to receive a request from the first wireless protocol circuitry to perform transmission or reception and arbitrate the requested transmission or reception between the first wireless protocol circuitry and the second wireless protocol circuitry. The decision may be based on current or future priority information, current configuration, or other factors. The coexistence circuitry (or other circuitry) may be configured to determine position of switches controlling antennas or transmission using shared or unshared antennas (or chains).

Abstract: Arbitration between two wireless protocols in a wireless device. The wireless device may include first wireless protocol circuitry, configured to receive and process first signals according to a first wireless protocol and second wireless protocol circuitry, configured to receive and process second signals according to a second wireless protocol. The wireless device may also include coexistence circuitry. The coexistence circuitry may be configured to receive a request from the first wireless protocol circuitry to perform transmission or reception and arbitrate the requested transmission or reception between the first wireless protocol circuitry and the second wireless protocol circuitry. The decision may be based on current or future priority information, current configuration, or other factors. The coexistence circuitry (or other circuitry) may be configured to determine position of switches controlling antennas or transmission using shared or unshared antennas (or chains).

Abstract: Arbitration between two wireless protocols in a wireless device. The wireless device may include first wireless protocol circuitry, configured to receive and process first signals according to a first wireless protocol and second wireless protocol circuitry, configured to receive and process second signals according to a second wireless protocol. The wireless device may also include coexistence circuitry. The coexistence circuitry may be configured to receive a request from the first wireless protocol circuitry to perform transmission or reception and arbitrate the requested transmission or reception between the first wireless protocol circuitry and the second wireless protocol circuitry. The decision may be based on current or future priority information, current configuration, or other factors. The coexistence circuitry (or other circuitry) may be configured to determine position of switches controlling antennas or transmission using shared or unshared antennas (or chains).

Abstract: Provided is a radio-frequency (RF) power amplifier system that includes a look-up table (LUT), populated with values indicative of predistortion information that is stored in a memory location, and a transmit path that includes a predistorter to receive a transmission signal (TX) and output a predistorted transmission (TX) signal, wherein the predistorted transmission signal is compensated for distortion of the transmit path, and wherein the predistorter outputs the predistorted TX signal based on the values indicative of predistortion information populated in the look-up table. The transmit path also includes a digital to analog converter (DAC) configured to receive the predistorted TX signal from the predistorter and output an analog predistorted transmission (TX) signal, and a power amplifier configured to amplify the analog predistorted TX signal.

Abstract: Predistortion may be employed to avoid distortion in the output of a power amplifier (PA) in a transmitter, while maintaining transmit power. An active transmission signal, instead of test tones, may be used for training a predistorter for the PA, and for the entire analog transmit path of the transmitter, via a loopback path from the output of the PA to the input of a receiver path. The transmitter may include an upconverter, and the receive path may include a downconverter, which may therefore both be included in the loopback path, helping eliminate phase noise. The predistortion training may incorporate fractional timing correction, to properly align the amplified version of the original TX signal received via the loopback path with the original TX signal. The transfer function of the PA may be estimated as a polynomial function, obtaining the coefficients of the polynomial function using adaptation techniques according to one of a number of possible different methods, e.g.

Abstract: System and method for detecting radio frequency (RF) saturation in a wireless device configured to simultaneously receive first signals according to a first wireless protocol and second signals according to a second wireless protocol. Signals having components of both the first and second signals may be received at a shared gain element. A level of saturation of the shared gain element may be determined. A current definition of a saturation event may be determined. A gain adjustment value may be determined based on the level of saturation and the current definition of a saturation event. A gain value of the shared gain element may be adjusted by the determined gain adjustment value.

Abstract: A communication device supporting multiple wireless protocols may share a common gain element in a coordinated manner. A first wireless protocol circuitry of the communication device may enter an active state, and in response to entering the active state, may determine whether a second wireless protocol circuitry of the communication device is active and whether the common gain element is currently shared. The gain element may be adjustable to amplify signals by an adjustable amount. The first wireless protocol circuitry may take control of the gain element from the second wireless protocol circuitry in response to determining that the second wireless protocol circuitry is active and the gain element is currently shared.

Abstract: Limiting gain for simultaneously receiving first wireless signals according to a first wireless protocol and second wireless signals according to a second wireless protocol. The first signals may be received using a shared gain element. The shared gain element may be used by the first wireless protocol and the second wireless protocol. A transmission or reception of the second signals may be predicted. The transmission or reception of the second signals may be predicted for transmission or reception while receiving the first signals. Gain of the shared gain element may be limited based on the prediction.

Abstract: Arbitration between two wireless protocols in a wireless device. The wireless device may include first wireless protocol circuitry, configured to receive and process first signals according to a first wireless protocol and second wireless protocol circuitry, configured to receive and process second signals according to a second wireless protocol. The wireless device may also include coexistence circuitry. The coexistence circuitry may be configured to receive a request from the first wireless protocol circuitry to perform transmission or reception and arbitrate the requested transmission or reception between the first wireless protocol circuitry and the second wireless protocol circuitry. The decision may be based on current or future priority information, current configuration, or other factors. The coexistence circuitry (or other circuitry) may be configured to determine position of switches controlling antennas or transmission using shared or unshared antennas (or chains).

Abstract: According to an embodiment of the invention, a method and apparatus are described for transmission link adaptation. In one embodiment of the invention, data is obtained regarding a quality of a transmitted signal. Data is obtained regarding available power for transmission. A transmission mode is selected based at least in part on the quality of the transmitted signal and on the available power for transmission.

Abstract: A signal analysis mechanism for processing and classifying an RF signal received at a WLAN device. A plurality of spectral data captures comprising time-frequency data and receive signal strength indicator (RSSI) data associated with the RF signal received at the WLAN device are generated. The time-frequency and RSSI data of each of the plurality of spectral data captures is processed to determine whether each spectral data capture is a narrowband signal capture. If the plurality of spectral data captures are narrowband signal captures, a narrowband interference signal type associated with the received RF signal is determined based, at least in part, on a plurality of parameters associated with the narrowband signal captures.

Abstract: In one embodiment, the present invention includes a slot in a repeating time division frame with a first training sequence, an information sequence after the first training sequence, and a second training sequence after the information sequence. In some embodiments either the first or the second training sequences indicates a type for the information sequence, such as a random access channel message and a traffic channel message, a configuration message, a channel assignment message, or a data traffic message.

Abstract: According to an embodiment of the invention, a method and apparatus are described to receive a signal, determine a quality of the received signal, and transmit a power control message, with a selected size, to request a modification in transmission power, the power control message being based at least in part on the quality of the received signal.

Abstract: According to an embodiment of the invention, a method and apparatus are described to receive a signal, determine a quality of the received signal, and transmit a power control message, with a selected size, the power control message being based at least in part on the quality of the received signal. The power control message requests a modification in transmission power or indicates the deviation of the signal quality from a reference signal quality.

Abstract: Payload reconstructing methods and apparatuses from wideband signals in the presence of multipath channel imperfections and frequency offset are disclosed. In one embodiment, a method in accordance with the teachings of the present invention includes receiving a signal, estimating a frequency offset of the received signal, performing frequency offset compensation on the received signal in response to the estimated frequency offset, performing equalization compensation on the received signal in response to the frequency offset compensated signal, and outputting payload information included in the received signal in response to the equalized frequency compensated received signal.

Abstract: In one embodiment of the present invention, a receiver can only properly receive signals that were intended for the receiver because the data descrambling depends on the identity of the receiver. In one embodiment, the invention is a communication device including a data source containing data to be transmitted to a remote radio, and a randomizer to scramble the data using an identifier related to the remote radio. In one embodiment, at least a part of the identifier related to the remote radio is used as at least part of a seed of the randomizer.