Software & Information Technology » Signal Processing

Found 19 technologies within Signal Processing RSS ATOM

Cooperative LIDAR Object Detection Via Feature Sharing in Deep Networks

11564 – The University of Central Florida invention is an approach that enables “cooperative cognition” by sharing partially processed data (“feature sharing”) from light detection and ranging (LIDAR) sensors among cooperative vehicles. The partially processed data are the features derived from an intermediate layer of a deep neural network. Experimental results show that the approach... Read More

Transmitter Identification Using Adversarial Networks and IQ Data

34396 – The invention relates to an adversarial learning technique for identifying rogue RF transmitters and classifying trusted ones by designing and implementing generative adversarial nets (GAN). Understanding and analyzing the radio frequency (RF) environment have become indispensable for various autonomous wireless deployments. Machine learning techniques have become popular as they can... Read More

Mode Demultiplexing Hybrid Simplifies Coherent Optical Front End

34398 – Researchers at the University of Central Florida have designed a single device that integrates mode demultiplexing, local oscillator power splitting, and optical 90-degree phase deconstruction using a multi-plane light converter (MPLC). As a result, the invention enables more reliable and robust coherent optical signals for communications systems. Today’s current optical front... Read More

Low-Cost Brightness Enhancement of Laser Sources Using Photonic Lanterns

33903 – New system enables manufacturers to reduce the cost and space needed to combine and boost the output brightness of semiconductor laser sources UCF researchers have invented a system that requires less physical space and is less expensive than other laser brightness enhancement systems. By uniquely integrating few-mode fiber and photonic lantern technologies, the new system enables the... Read More

(a) Schematic of few-mode Erbium-doped fiber amplifier, CL: collimating lens, FMF: few-mode (FM) fiber, EDF: Erbium-doped fiber, MO: microscope objective, DM: dichroic mirror. (b) Erbium-doped few-mode fiber cross-section.

New LIDAR Receiver Architecture Boosts Signal Quality at Lower Cost

33950 – Few-Mode Preamplified Receiver Design Improves LIDAR Performance in Autonomous Vehicles UCF researchers have developed an innovation in remote sensing technology that may help speed the large-scale deployment of LIDAR (light detection and ranging) in autonomous vehicles. With its novel few-mode (FM) preamplified receiver architecture, the new UCF LIDAR system has demonstrated a... Read More

Block diagram of a third embodiment of a communication system that uses adaptive interference cancellation

Methods and Devices for Interference Cancellation in Radio Frequency Communication Systems

30849 – This patent details the technique and apparatus for carrying out communications that use a radio frequency comprised of a signal and an interference component. The interference signal is generated at a control center, sent to an antenna site via fiber optics and transmitted to another control center, aircraft or ship Scientists at UCF have devised a communications system capable of... Read More

Schematic diagram of an optical parallel signal processor configured for identifYing a multiplicity of target objects within a real time signal

Signal Processing using Spectrally Phase-Encoded Optical Frequency Combs for High Speed Computing and Pattern Recognition

31090 – Methods, apparatus and systems for a high speed signal processing system As the amount of digital information and communication increases, timely and accurate data collection for software based evaluation and correlation becomes increasingly more difficult. The increase in difficulty arises from three main issues: the sheer volume of the data being generated, the nature of the desired... Read More

General schematic for the ultralow noise mode-locked laser and RF sinewave source

Dual Opto-Electronic Precision Clocking Protocol for Optical and Electronic Systems

30272 – The design of an opto-electronic loop that drives a harmonic mode-locked laser to produce a beat pattern signal to act as a high precision clocking protocol in both the optical and electronic regimes. Inside of every piece of modern electronic technology lays a clock. Intended to coordinate and synchronize spatially separated operations within in a circuit or across a communications... Read More

System model diagram of an optical communication system including an embodiment of impairment compensation logic

Compensation of Optical Signal Error through Digital Post-processing

31375 – The design for an error compensation method for optical information or imaging systems which suffer from linear and nonlinear impairments through an electronic postprocessing, back propagation method. Optical signal processing hinges on the system’s ability to compensate for the error accumulated by optical pulses as they travel through air or a waveguide apparatus, such as a fiber optic... Read More

Fig. 1. Block diagram of an embodiment of a system for optical carrier recovery

All-Optical Carrier Recovery

30930 – This invention presents the first all-optical phase and polarization recovery scheme for Phase-Shift Key signals. UCF scientists have developed the first all-optical carrier phase and polarization recovery scheme for Phase-Shift Key (PSK) signals. The technique also provides a means to carry out reliable optical carrier synchronization using a phase sensitive oscillator. Coherent optical... Read More

First preferred embodiment layout for a format insensitive 2R regeneration

Optical Multichannel Signal Regeneration

30170 – Method and apparatus for efficient optical regeneration UCF scientists have developed a more efficient all-optical regeneration system that addresses the limitations of pre-existing inventions. It can process multiple channel communications and is capable of removing the noise from both 0 and 1 bits. The growing demand for high capacity fiber optic communication systems has led to... Read More

Fig 1. Block diagram of a communication system including an embodiment of a system and method of polarization time coding for optical communications

Improved Optical Communications with Significantly Reduced Cost using Polarization Diversity Transmission

30901 – Novel system and method for improving optical communications using transmission polarization diversity to reduce impairments in fiber transmissions. UCF scientists have developed a novel and less costly system and device, to improve optical communication using polarization redundancy. The overall system is less complex than previous systems, since it uses simplified receivers, simple... Read More

Schematic block diagram showing an example of an experimental setup for a binary phase-shift-keying transmitter/ phase diversity receiver

Chromatic Dispersion Compensation for Optical Communications

31078 – A method for infinite impulse response (IIR) chromatic dispersion compensation in optical communications systems that employ homodyne detection, by means of digital signal postprocessing. The advent of fiber optic communications has enabled a great deal of the connectivity we enjoy in our modern age. Fiber’s ability to carry information around the world at the speed of light has placed a... Read More

Schematic block diagram showing a switchless hybrid variable optical delay line and variable intrinsic optical attenuator fundamental design paradigm for enabling electrical and all-optical signal processing

Hybrid Photonics Modules for Variable Time Delay Signal Processing

31316 – This invention provides means and methods for the creation of a variable optical delay line consisting of: an input circuit with an electro-optic modulator, a digital delay module, a switchless analog delay module, and non-dispersive single mode fibers. Searching and tracking fast moving objects requires high speed and high spatial resolution radar beams. To fulfill this need phased array... Read More

Shows the LP Coefficient Encoding Process wherein H, is the unquantized Synthesis filter response for the i'h signal frame

Data Compression of One or Multidimensional Signals Utilizing an Energy Based Split Vector Quantizer via Multiple Transform Domain Representations

30041 – Systems containing multiple transform split quantizer codebooks that will efficiently and more accurately represent data signals by measuring the extent of distortion and automatically picks which domain is better for the particular signal being transmitted or stored Vector quantization is a powerful technique used for compressing data. The term “data” can represent signals which exist in... Read More

Comparison of the frequency domain pictures of (a) a conventional COEO and (b) an intracavity etalon-based COEO

Streamlined, Ultralow Noise, Portable Frequency Comb Device

33037 – Currently available technologies that generate a low noise 10 GHz pulse train with RF phase noise utilize optical frequency division, but as a result, suffer from stabilization and calibration difficulties. The conventional optical frequency divider is comprised of four main components: a mode-locked laser, a separate continuous wave (CW) laser, a nonlinear f-2f interferometer, and an optical... Read More

A retaining wall's tilt can easily be monitored with this technology

High-Accuracy Structural Health Monitoring Method Detects Small Pattern Changes with Fewer Sensors

32433 – UCF researchers have developed a way to detect small pattern changes in sensed data, particularly in field monitoring applications, using auto-modulating pattern (AMP) detection. Small pattern changes are difficult to identify in the presence of substantial environmental effects that act as noise and conceal them. In some situations, such as monitoring the tilt of a retaining wall over time... Read More

Comparison of phase noise of the OEO with RF filter and with etalon (Normalized power)

Achieve Higher RF Frequency Stability with Lower Phase Noise

32843 – Improve radar, communications, and signal intelligence with interferometer-based optoelectronic oscillator Optoelectronic oscillators (OEOs) provide a continuous, high quality factor (Q) modulated signal in order to obtain high spectral purity. OEOs are used for a variety of purposes, including a carrier wave for communications, and radar emissions. Most OEOs use an RF filter as the mode... Read More

A system model diagram of an optical communication system including impairment compensation logic

Remove Fiber Optic Signal Distortions with Virtual Filters

31724 – Compensate for linear and non-linear distortion in fiber optic communication links using wavelet filtering in virtual backward propagation. Transmitting a signal over long haul optical fiber links leads to undesirable distortions, which in order for the signal to be effectively received, these distortions must be compensated for and the original signal recovered. Signal distortion results... Read More