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National Instruments Corporation patents


Recent patent applications related to National Instruments Corporation. National Instruments Corporation is listed as an Agent/Assignee. Note: National Instruments Corporation may have other listings under different names/spellings. We're not affiliated with National Instruments Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "N" | National Instruments Corporation-related inventors


Asynchronous start for timed functions

Asynchronous event-based start of input/output operations is implemented in a distributed system. Within the distributed system, each master device—of a plurality of master devices coupled to a respective plurality of slave devices via an internal network—may implement one or more timed-functions configured to control timing of physical input operations and/or physical output operations for the respective plurality of slave devices, and streams between the master device and the respective plurality of slave devices. ... National Instruments Corporation

Spectral stitching method to increase instantaneous bandwidth in vector signal generators

Embodiments are described of devices and methods for processing a signal using a plurality of vector signal generators (vsgs). A digital signal may be provided to a plurality of signal paths, each of which may process a respective frequency band of the signal, the respective frequency bands having regions of overlap. ... National Instruments Corporation

Common phase error (cpe) compensation for frequency division multiplex (fdm) symbols in wireless communication systems

A wireless device receives a frequency division multiplexed (fdm) symbol of constituent equalized fdm data subcarriers. A modulation scheme constellation diagram is subdivided into two or more regions. ... National Instruments Corporation

Parallel interleaved multiphase llc current sharing control

A multiphase power converter may include a number of llc converter stages coupled in a parallel interleaved current sharing configuration. The total current provided by the multiphase power converter may be balanced between the different llc converter stages by sensing a respective output current in each llc converter stage, with the sensed output current of one of the llc converter stages used as a reference current, and performing one or more adjustments for each llc converter stage (other than the reference llc converter stage), based on the sensed output currents. ... National Instruments Corporation

Cold source based noise figure measurement using s-parameters and a vector signal transceiver/vector signal analyzer/spectrum analyzer

The noise figure for a radio frequency device may be obtained through power measurements. A signal flow graph based upon the s-parameter information of the entire rf system may be constructed. ... National Instruments Corporation

Program variable convergence analysis

System and method for convergence analysis. One or more state variables of a first program may be determined based on dependencies of variables in a first program. ... National Instruments Corporation

Control of safety input/output by non-safety system during safe times

Improved process control systems may include shared safety control and process control components/elements, facilitating the sharing of sensors, actuators, and input/output (i/o) interface circuitry between the safety functionality of the system and the general operational (i.e. Normal) functionality of the system. ... National Instruments Corporation

Channel quality reporting for full-duplex radio

Techniques are disclosed relating to channel quality reporting for full-duplex (fd) wireless communications. In some embodiments an apparatus (e.g., a mobile device) is configured to receive a reference signal in a wireless communication and determine one or more signal quality indicators for fd communications based on a measured sinr of the reference signal and one or more self-interference cancelation levels. ... National Instruments Corporation

Combined calibration method to time and phase synchronize mimo receive channels and perform frequency response correction

Techniques are disclosed related to calibrating and operating a multiple input multiple output (mimo) radio system. Some embodiments comprise a method wherein a single calibration signal is used to calibrate a mimo radio system by performing each of time synchronization, phase synchronization, and frequency response correction for multiple receivers. ... National Instruments Corporation

Frequency response calibration of synchronized mimo measurement receivers with local and remote transmitters

Techniques are disclosed related to calibrating and operating a multiple input multiple output (mimo) radio system. In some embodiments, a dual mode calibration may be employed to calibrate a remote transmitter (rt). ... National Instruments Corporation

Digital predistortion for full-duplex radio

Techniques are disclosed relating to use of digital predistortion in the context of full-duplex radio. In some embodiments, an apparatus includes one or more antennas and is configured to simultaneously transmit and receive wireless signals via at least partially overlapping frequency resources using the one or more antennas. ... National Instruments Corporation

Reduced-complexity downlink (dl) signal demodulation using reciprocity reference signals for mimo wireless communication systems

A method for reducing complexity of downlink signal demodulation in a multiuser (mu) multiple-input-multiple-output (mimo) wireless communication system includes a base station acquiring uplink (ul) channel state information (csi) of a mimo channel between the base station and a user equipment (ue), deriving downlink (dl) csi from the ul csi, and transmitting orthogonal frequency-division multiplexing (ofdm) radio subframes using mimo pre-equalization based on the dl csi. The ue performs downlink reciprocity correction of the ofdm subframes received from the base station using a single complex phasor estimate and performs downlink data demodulation of the downlink reciprocity corrected ofdm subframes without performing additional mimo equalization.. ... National Instruments Corporation

Time-locked data alignment in distributed embedded systems

An embedded system may distribute, e.g. At the point of coupling to a main power grid, information corresponding to one or more operational parameters (e.g. ... National Instruments Corporation

Multi-user random access procedures for massive mimo wireless communication systems

A system and method for performing multi-user random access procedures in a mobile telecommunications network between a base station and a user equipment (ue) having a plurality of antennas includes transmitting a random access signal set (rass) message using one or more antennas of the plurality of ue antennas. In response to receiving the rass message, the base station transmitting a random access response physical downlink control channel (rar-pdcch) message. ... National Instruments Corporation

03/08/18 / #20180069576

Time sequenced spectral stitching

Methods and systems are disclosed for using a single receiving device, such as a single vsa, to capture and digitize multiple time-domain acquisitions of a repeating signal at different center frequencies, to create a single time-domain waveform having a bandwidth greater than the real-time instantaneous bandwidth of the receiving device. Specifically, one or more signal processing paths may process the multiple digitized acquisitions of the repeating signal, either sequentially or in parallel, such that the processed acquisitions may be aggregated into a representation of one or more repetitions of the repeating signal.. ... National Instruments Corporation

02/22/18 / #20180054729

Methods and systems for esim programming of cellular devices during wireless power provision

An apparatus includes a wireless power supply that wirelessly provides power to a cellular device having an embedded subscriber identification module (esim) while the cellular device is placed adjacent to the wireless power supply, a radio, and a processor programmed to control the radio to wirelessly provide a subscriber identification module (sim) profile to a cellular device for loading into the esim while the wireless power supply wirelessly provides power to the cellular device. A cellular device includes an esim, a radio that wirelessly receives a sim profile, a battery, and a secondary power supply configured to be wirelessly energized when placed adjacent to a wireless power supply. ... National Instruments Corporation

02/22/18 / #20180054517

Methods and systems for esim programming of cellular devices

An apparatus includes a cellular frequency radio, either coupled to or configured to be coupled to an antenna disposed within a radio frequency (rf) shielded chamber. A cellular device includes an embedded subscriber identification module (esim). ... National Instruments Corporation

02/15/18 / #20180048506

Radio frequency (rf) communication systems using rf switching guard periods to transmit special symbols in block symbol transmissions

An apparatus includes circuitry that processes a subframe as part of a time-domain signal frame structure used for radio frequency communications. The subframe includes a plurality of block symbols each having an associated time-domain guard period and one or more radio frequency (rf) switching guard periods. ... National Instruments Corporation

02/15/18 / #20180048492

Ue-aided channel reciprocity compensation for radio access in mimo wireless communication systems

A wireless cellular base station (bs) transmitter transmits a downlink calibration pilot symbol. A receiver receives from a user equipment (ue) an uplink calibration pilot symbol and an effective downlink channel estimate transmitted by the ue. ... National Instruments Corporation

02/15/18 / #20180048361

Intra-node channel reciprocity compensation for radio access in mimo wireless communication systems

A wireless cellular base station includes m antennas and one or more processing devices. For each antenna, the antenna transmits a calibration pilot symbol over the air and the other m−1 antennas receive the calibration pilot symbol over the air. ... National Instruments Corporation

02/01/18 / #20180031609

Soft front panel for concurrent radio frequency measurements

Methods and measurements systems are disclosed relating to use of a soft front panel (sfp) to display results of measurement functions. A measurement device may concurrently perform two or more measurement functions to produce two or more respective signal measurements, wherein each measurement function comprises an acquisition function and a processing function. ... National Instruments Corporation

11/30/17 / #20170346670

Spectral stitching method to increase instantaneous bandwidth in vector signal analyzers

Various embodiments are described of devices and associated methods for processing a signal using a plurality of vector signal analyzers (vsas). An input signal may be split and provided to a plurality of vsas, each of which may process a respective frequency band of the signal, where the respective frequency bands have regions of overlap. ... National Instruments Corporation

11/23/17 / #20170338997

Nyquist and square root nyquist filters for pulse shaping in wireless communications

Nyquist filters for pulse shaping and related matched filters in wireless communications are disclosed that provide improved performance. The disclosed embodiments recognize that the second derivative of the raised cosine function is discontinuous in the frequency domain and that the first derivative of the square root raised cosine is discontinuous in the frequency domain. ... National Instruments Corporation

10/05/17 / #20170290013

Unified flexible radio access technology (rat) for 5g mobile communication systems

Embodiments are disclosed for a new unified and flexible frame structure for 5g (5th generation) mobile telecommunications standard and related radio access technology (rat). The disclosed embodiments use communication frames with multiple partition types and are able to span a wide range of 5g deployment scenarios in a flexible and scalable manner.. ... National Instruments Corporation

10/05/17 / #20170286342

Determination of timing configurations for program dataflow models

A method for determining timing constraints in dataflow models is disclosed. The method includes receiving node information specifying a plurality of dataflow nodes, as well as coupling between various ones of the dataflow nodes. ... National Instruments Corporation

10/05/17 / #20170286169

Automatically mapping program functions to distributed heterogeneous platforms based on hardware attributes and specified constraints

A method for automatically mapping program functions to distributed heterogeneous platforms based on hardware attributes and specified constraints is disclosed. The method includes receiving a plurality of program functions and determining constraint information for each. ... National Instruments Corporation

08/17/17 / #20170234317

Zero ripple fan noise suppression

A fan noise suppression circuit may be coupled between a power source and a power input to at least one fan. The fan noise suppression circuit may include an adjustable current source coupled to the power source. ... National Instruments Corporation

07/20/17 / #20170207931

Channel sounding techniques

Techniques are disclosed relating to channel sounding. In some embodiments a transmitter transmits a periodic cazac sequence beginning at a point in time that corresponds to a timing signal (e.g., a pulse-per-second signal). ... National Instruments Corporation

07/13/17 / #20170201288

I/q modulator and demodulator with wide instantaneous bandwidth and high local-oscillator-port-to-radio-frequency-port isolation

An improved quadrature modulator/demodulator (iqmd) may use two-phase quadrature local oscillator (lo) signal generation for generating 0° and 90° lo signals, and an anti-phase combiner/divider (at 0° and 180°) on the rf (radio frequency) port. The iqmd may include mixers (which may be double-balanced passive mixers) that function as downconverters when a signal is incident at their radio frequency (rf) ports, and function as upconverters when signals are incident on their intermediate frequency (if) ports. ... National Instruments Corporation

05/18/17 / #20170141886

Channel quality reporting for full-duplex radio

Techniques are disclosed relating to channel quality reporting for full-duplex (fd) wireless communications. In some embodiments an apparatus (e.g., a mobile device) is configured to receive a reference signal in a wireless communication and determine an effective signal to interference plus noise ratio (sinr) for fd communications based on a measured sinr of the reference signal and one or more self-interference cancelation levels. ... National Instruments Corporation

05/18/17 / #20170139001

Digital approach to the removal of ac parasitics for impedance measurements

An improved measurement system may include a source measure unit (smu) capable of performing accurate low-level current measurements. Based on an smu design that provides a controlled dc voltage source with precision current limiting and a controlled 0v (zero volt) dc at the measurement terminal, an ac design may be implemented to establish the same (or very similar) conditions over a specified frequency range. ... National Instruments Corporation

05/11/17 / #20170132108

Debugging parallel graphical program code

System and method for debugging a graphical program. A graphical program may be received, e.g., from storage, from another process or device, etc. ... National Instruments Corporation

05/11/17 / #20170131984

Value transfer between program variables using dynamic memory resource mapping

System and method for creating a program. A program may be compiled, including determining one or more value transfer operations in the program. ... National Instruments Corporation

05/11/17 / #20170131976

Replication structure in a graphical programming language

System and method for creating a graphical program. A first replication structure may be included in a graphical program, where the first replication structure specifies replication of any graphical program code inside the first replication structure. ... National Instruments Corporation

04/27/17 / #20170115885

Self-addressing memory

Techniques are disclosed relating to self-addressing memory. In one embodiment, an apparatus includes a memory and addressing circuitry coupled to or comprised in the memory. ... National Instruments Corporation

04/13/17 / #20170104617

I/q modulator and demodulator with wide instantaneous bandwidth and high local-oscillator-port-to-radio-frequency-port isolation

An improved quadrature modulator/demodulator (iqmd) may use two-phase quadrature local oscillator (lo) signal generation for generating 0° and 90° lo signals, and an anti-phase combiner/divider (at 0° and 180°) on the rf (radio frequency) port. The iqmd may include mixers (which may be double-balanced passive mixers) that function as downconverters when a signal is incident at their radio frequency (rf) ports, and function as upconverters when signals are incident on their intermediate frequency (if) ports. ... National Instruments Corporation

04/13/17 / #20170103007

Configurable input/output sub-channels for optimized diagnostics

A novel diagnostics and verifiable input/output (dvio) channel may reduce fixed diagnostic circuitry and allow standard input/output channels to be repurposed as diagnostics for specific deployments. The dvio channel may include a digital input sub-channel and a digital output sub-channel, with each sub-channel including basic protection and diagnostic circuitry for performing basic diagnostics. ... National Instruments Corporation

03/30/17 / #20170093608

Spectral stitching method to increase instantaneous bandwidth in vector signal analyzers

Various embodiments are described of devices and associated methods for processing a signal using a plurality of vector signal analyzers (vsas). An input signal may be split and provided to a plurality of vsas, each of which may process a respective frequency band of the signal, where the respective frequency bands have regions of overlap. ... National Instruments Corporation

03/30/17 / #20170093466

Scalable massive mimo

Techniques are disclosed relating to massive mimo communications. In some embodiments, a base station is configured to dynamically adjust the number of processing elements used for mimo signal estimation (e.g., the number of mimo rx chains used for parallel processing). ... National Instruments Corporation

03/23/17 / #20170083299

Correlation analysis of program structures

System and method for performing correlation analysis. A program that includes multiple program structures and one or more data objects is stored. ... National Instruments Corporation

02/02/17 / #20170033915

Digital predistortion for full-duplex radio

Techniques are disclosed relating to use of digital predistortion in the context of full-duplex radio. In some embodiments, an apparatus includes one or more antennas and is configured to simultaneously transmit and receive wireless signals via at least partially overlapping frequency resources using the one or more antennas. ... National Instruments Corporation

02/02/17 / #20170031796

Automatically determining and indicating system positions of devices in a hierarchical bus networked system

System and method for determining and conveying connectivity of cabled computer peripherals to a user. Characteristic information regarding each of multiple devices connected to a computer system in a system hierarchy of a bus networked system may be stored, including a device hierarchy associated with each device that identifies respective hardware nodes included in the device, and one or more visual attributes of the device. ... National Instruments Corporation








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