Allen-Vanguard Corporation

Zarbana Digital Fund LLC

Allen-Vanguard Technologies Inc.

Trevor Noel Yensen

Oktay Ureten

David Charles Bongfeldt

Travis Patrick Corkery

Octavia A Dobre

Yahia Ahmed Eldemerdash

Halim Yanikomeroglu

Neil Birkett

Niclas Lewis

Phil Guillemette

Gilad Helman

David Arthur McQuinn

Ryan Shawn Halpin

Amr El-Keyi

Shawn Halpin

Jeffrey Lariviere

Mike Bush

This invention relates system for classifying a modulation format of a communication signal. The system includes a receiving antenna system, to receive the communication signal, a preprocessing module, to evaluate a Fourier transform of a plurality of samples of the received communication signal, normalize each discrete sample of the Fourier transform, quantize each normalized sample based on a number of quantization levels (Q), a graphical analyzer to construct a undirected graph by tracing amplitude of the each quantized sample; and a classification module to extract one or more modulation classification (MC) features from the undirected graph; and to determine the modulation format of the received communication signal based on the extracted MC features.

System and method for modulation classification using signal graphs

A method for identifying cellular networks using a computer processor and a signal receiver including determining whether a cellular network being used is either an LTE-DL, LTE-UL, GSM, CDMA2000 or UMTS network. The determination is made on the basis of individual tests eliminating one network at a time based on unique characteristics of each particular network.

System and method for cellular network identification

A method for long-term evolution (LTE) synchronization by a signal receiver in the presence of interference signals including providing multiple parallel adaptive filters to eliminate the contribution of an interference signal to a timing metric of an LTE signal; wherein coefficients of each of the parallel adaptive filters are determined using a linearly constrained minimum variance (LCMV) criterion to minimize output power of each filter subject to the LCMV criterion that preserves received signal vectors corresponding to all possible primary synchronization signal signatures; and wherein the LCMV criterion are updated iteratively using a recursive least squares (RLS) algorithm.

System and method for providing adaptive synchronization of LTE communication systems

A system for radio scanning and signal generation including a direct digital synthesis (DDS) signal generator providing a signal within a first bandwidth; a frequency multiplier in signal communication with the DDS signal generator; the frequency multiplier adapted to convert the signal within the first bandwidth to a multiplied signal within a second bandwidth, wherein the second bandwidth encompasses a wider frequency range than the first bandwidth; a processor in communication with the DDS signal generator for programming the DDS signal generator to provide the signal within the first bandwidth; the processor further adapted to reprogram the DDS signal generator to alter the first bandwidth; a radio frequency (RF) port for transmitting the signal as a wideband signal.

System and method for ultra wideband radio frequency scanning and signal generation

A sequencer for use with an Electronic Warfare system consisting of one or more transmitters and receivers including one or more desired operations; a processor in communication with a memory; the memory storing instructions executed by the processor to sequence the one or more desired operations; an output connected to each of transmitter and receiver devices of the transceiver to control power-up and power-down sequences of the transmitter and receiver devices; wherein the instructions to sequence the one or more operations include instructions to prioritize a high-priority transmit operation such that the high-priority transmit operation is carried out in real-time upon request.

Event sequencer for a radio frequency system

A wideband signal processing receiver system including an interface for connecting to an analog to digital converter (ADC) of a broader signal chain lineup, wherein the interface receives digital data from the ADC, and a field programmable gate array (FPGA) and associated configuration for converting the digital data into two digital signal paths. The two digital signal paths include a frequency domain path and an optionally decimated time domain path. A memory and/or high speed bus stores or transfers high speed bus/link data from the frequency domain path and the time domain path.

Frequency and time domain streaming receiver

A method for pre-processing a signal prior to classification, where the signal includes non-contiguous segments; the method includes applying a coarse carrier frequency offset correction, applying a phase correction, applying a residual course frequency offset correction, and outputting a simulated continuous signal consisting of recorded continuous signal segments and modeled non-contiguous segments. A system for implementing the method is also disclosed.

System and method for classifying signal modulations

Mezzanine board

An apparatus includes an antenna for transmitting RF radiation and being structured to enable the distribution of RF energy emitted therefrom to be varied in the vertical plane. The apparatus comprises a generator for generating an RF signal and to pass the signal to the antenna, and a controller arranged to control the distribution of RF energy emitted from the antenna in the vertical plane in response to positional information about an object.

Radio antenna assembly and apparatus for controlling transmission and reception of RF signals

An apparatus is provided for generating a timing signal having an input for receiving a first signal indicating successive time intervals, means for receiving a second signal indicating successive time intervals, and a generator adapted to generate a timing signal based on the second signal and on a relationship between one or more time intervals of the first signal and one or more time intervals of the second signal. This arrangement enables a timing signal to be generated using a time signal produced by a source or device and to be based on a time signal produced by another source or device.

Apparatus and method for generating a timing signal

An antenna assembly is provided for mounting on a predetermined support structure positioned on a surface, the support structure having a peripheral edge at an elevated position above the surface. The antenna assembly includes an antenna and a support for supporting the antenna at an elevated position above the surface when mounted on the support structure. The support is adapted to support the antenna at a sufficient height above the surface to provide a direct path for electromagnetic radiation at least a portion of the antenna to a position on the surface external of the peripheral edge of less than or equal to about 4.5 meters from substantially any point on the peripheral edge, or to a position on the surface at a point positioned 3 meters from the front of the support structure and 3 meters from a side of the support structure.

Radio antenna assembly

The invention relates generally to the field of wireless communications and more particularly to a method of and device for detecting the presence of a received data packet in a digital receiver. The present invention proposes a simplified method of correlation by removing dependency on the amplitude fluctuations while at the same time maintaining phase relevancy. The key advancement involves mapping the complex quadrature amplitude modulation (QAM) preamble to a quantized phase shift keying (PSK) constellation before application to a matched complex correlator. The proposed process essentially 'amplitude normalizes' the input signal without the use or complexity associated with a divider. This simplified normalization scheme makes the packet detection algorithm robust against amplitude variations in the input signal, while still allowing for good correlation output. In applications where interference is superimposed on the I/Q input signals, the invention improves the detection capability over automatic gain control (AGC) normalization methods.

Method for amplitude insensitive packet detection

An antenna assembly is provided for mounting on a predetermined support structure positioned on a surface, the support structure having a peripheral edge at an elevated position above the surface. The antenna assembly includes an antenna and a support for supporting the antenna at an elevated position above the surface when mounted on the support structure. The support is adapted to support the antenna at a sufficient height above the surface to provide a direct path for electromagnetic radiation from at least a portion of the antenna to a position on the surface external of the peripheral edge of less than or equal to about 4.5 meters from substantially any point on the peripheral edge, or to a position on the surface at a point positioned 3 meters from the front of the support structure and 3 meters from a side of the support structure.

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Ottawa, Canada

Trevor Noel Yensen