Abstract: Techniques are provided for obtaining global navigation satellite system (GNSS) measurements utilizing shared resources in a wireless node, such as an access point in a wireless wide area network (WLAN). An example method for obtaining a position estimate with an access point includes receiving, with one or more receive chains in the access point, radio frequency signals associated with a wireless network transmitted from a plurality of user equipment, determining a positioning opportunity, receiving, with at least one of the one or more receive chains, radio frequency signals transmitted from a satellite vehicle based at least in part on determining the positioning opportunity, and estimating a position of the access point based at least in part on the radio frequency signals transmitted from the satellite vehicle.

Abstract: Techniques are provided for calibrating a crystal oscillator (XOs) in a global navigation satellite system (GNSS) receiver. An example method for generating XO calibration information includes receiving radio frequency signals from a wireless node, wherein the radio frequency signals include an indication of oscillator temperature information, determining a frequency offset value based at least in part on the radio frequency signals, determining a local oscillator temperature value, determining a frequency correction value based at least in part on the local oscillator temperature value, the frequency offset value, and the indication of oscillator temperature information, and transmitting a calibration report to the wireless node.

Abstract: This disclosure provides methods, apparatuses, wireless nodes, and computer-readable mediums for wireless communications. In one aspect, a method is provide for a Barker-modulated waveform with constant envelope for a wireless local area network (WLAN) signal. A method that may be performed by a transmitter device includes generating a Barker-modulated signal having a constant envelope and transmitting the Barker-modulated signal in a WLAN.

Abstract: A method for multi-user multiple-input multiple-output (MU-MIMO) communications between a communications device and a client station (STA). The communications device may initiate MU-MIMO transmissions to the STA according to a first modulation and coding scheme (MCS) and a first transmission power. The device may monitor packet error rates (PERs) associated with the MU-MIMO transmissions to the STA and select a second MCS to be used for subsequent MU-MIMO transmissions to the STA based, at least in part, on the PERs and the first transmission power. The device may determine a target transmission power associated with the first MCS and compare the target transmission power with the first transmission power. The selection of the second MCS may be based, at least in part, on the comparison. The device may record PERs associated with the MU-MIMO transmissions, in a PER table, in relation to the first transmission power.

Abstract: Methods, systems, and devices are described for wireless communication. In one aspect, a method of wireless communication includes receiving, by a first wireless device, compressed beamforming information from each of a plurality of stations, the compressed beamforming information including a feedback signal-to-noise ratio (SNR) value and compressed feedback matrix. The method also includes determining a multi-user signal-to-interference-plus noise ratio (SINR) metric for each of the plurality of stations based at least in part on the received feedback SNR values and the received compressed feedback matrices.

Abstract: Methods, systems, and devices are described for wireless communication. In one aspect, a method of wireless communication includes receiving, by a first wireless device, compressed beamforming information from each of a plurality of stations, the compressed beamforming information including a feedback signal-to-noise ratio (SNR) value and compressed feedback matrix. The method also includes determining a multi-user signal-to-interference-plus noise ratio (SINR) metric for each of the plurality of stations based at least in part on the received feedback SNR values and the received compressed feedback matrices.

Abstract: A DC offset filter for wide band beamforming receivers is disclosed. In an exemplary embodiment, an apparatus includes a first mixer configured to down-convert an RF wideband beamformed signal to generate a first baseband wideband beamformed signal, the RF wideband beamformed signal having a beam pattern selected from a plurality of beam patterns, and a notch filter configured to remove DC offset from the first baseband wideband beamformed signal independent of the beam pattern.

Abstract: A method for providing uplink spatial division multiple access (SDMA) transmission opportunities (TXOP) is described. A demarcation indication may be sent to one or more subscriber stations. An SDMA contention window may be started. An allocation indication may be received. Requested uplink SDMA TXOP resources may be allocated according to the allocation indication.

Abstract: A DC offset filter for wide band beamforming receivers is disclosed. In an exemplary embodiment, an apparatus includes a first mixer configured to down-convert an RF wideband beamformed signal to generate a first baseband wideband beamformed signal, the RF wideband beamformed signal having a beam pattern selected from a plurality of beam patterns, and a notch filter configured to remove DC offset from the first baseband wideband beamformed signal independent of the beam pattern.

Abstract: Systems, methods and apparatus a provided for calibrating actual output power of a transmit power sensor for closed loop power control using a quality metric such as error vector magnitude (EVM) to improve power detection accuracy. In aspects, a method for correlating an output of a transmit power sensor with actual output power of a wireless transmitter includes deriving a characteristic correlation between an actual output power of a set of transmit amplifiers and an output power and of a set of corresponding power detection circuits over a range of transmit power levels in a corresponding set of wireless devices; storing the characteristic correlation in a wireless device that is not part of the set from which the characteristic correlation was derived; and sensing an output of a transmit power sensor of the device while the transmitter of the device transmits according to one or more gain settings.

Abstract: A base station for compensating for frequency offsets is described. The base station includes a processor and instructions stored in memory. The base station computes a time domain impulse response estimate and applies frequency offset compensation to the time domain impulse response estimate to obtain a time domain offset-compensated impulse response estimate. A frequency domain offset-compensated impulse response estimate is computed. The frequency domain offset-compensated impulse response estimate is used to compute beamforming weights. The base station transmits data using the beamforming weights.

Abstract: Disclosed are systems and methods for electrical verification of integrated circuits. Methodologies are described for verification of the power and ground distribution systems (PDS) for system-on-a-chip (SoC) and the verification of the interaction of the PDS with the behavior of integrated circuits.

Abstract: Disclosed are systems and methods for electrical verification of integrated circuits. Methodologies are described for verification of the power and ground distribution systems (PDS) for system-on-a-chip (SoC) and the verification of the interaction of the PDS with the behavior of integrated circuits.

Abstract: Disclosed are systems and methods for electrical verification of integrated circuits. Methodologies are described for verification of the power and ground distribution systems (PDS) for system-on-a-chip (SoC) and the verification of the interaction of the PDS with the behavior of integrated circuits.

Abstract: Disclosed are systems and methods for electrical verification of integrated circuits. Methodologies are described for verification of the power and ground distribution systems (PDS) for system-on-a-chip (SoC) and the verification of the interaction of the PDS with the behavior of integrated circuits.

Abstract: Systems, methods and apparatus a provided for calibrating actual output power of a transmit power sensor for closed loop power control using a quality metric such as error vector magnitude (EVM) to improve power detection accuracy. In aspects, a method for correlating an output of a transmit power sensor with actual output power of a wireless transmitter includes deriving a characteristic correlation between an actual output power of a set of transmit amplifiers and an output power and of a set of corresponding power detection circuits over a range of transmit power levels in a corresponding set of wireless devices; storing the characteristic correlation in a wireless device that is not part of the set from which the characteristic correlation was derived; and sensing an output of a transmit power sensor of the device while the transmitter of the device transmits according to one or more gain settings.

Abstract: A base station for compensating for frequency offsets is described. The base station includes a processor and instructions stored in memory. The base station computes a time domain impulse response estimate and applies frequency offset compensation to the time domain impulse response estimate to obtain a time domain offset-compensated impulse response estimate. A frequency domain offset-compensated impulse response estimate is computed. The frequency domain offset-compensated impulse response estimate is used to compute beamforming weights. The base station transmits data using the beamforming weights.

Abstract: Disclosed are systems and methods for electrical verification of integrated circuits. Methodologies are described for verification of the power and ground distribution systems (PDS) for system-on-a-chip (SoC) and the verification of the interaction of the PDS with the behavior of integrated circuits.

Abstract: A method for providing uplink spatial division multiple access (SDMA) transmission opportunities (TXOP) is described. A demarcation indication may be sent to one or more subscriber stations. An SDMA contention window may be started. An allocation indication may be received. Requested uplink SDMA TXOP resources may be allocated according to the allocation indication.

Abstract: A wireless receiver receives signals at a plurality of antennas and the combined signal is compensated for channel distortion. In other aspects, a wireless receiver includes a minimum distance receiver applied to the output of a whitened-matched filter, which combines channel matched filtering and whitening, using one or more antennas.