Search Results - communications+systems

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Self-Identifying Active Relay
5G wireless systems are designed to meet the increasing demand for high data rates but face challenges like signal obstruction, poor penetration, high propagation loss, and inadequate scattering. Active relays have emerged as a solution to these issues by re-routing signals to avoid obstructions, ensuring uninterrupted 5G service. However, in dense...
Published: 8/30/2024   |   Inventor(s): Subhan Zakir, Saeed Zeinolabedinzadeh, Waleed Ahmad
Keywords(s): Communications Systems, Networks, IT, Software and Communication, PS-Computing and Information Technology, Signal Processing, Wireless
Category(s): Computing & Information Technology, Physical Science
Hybrid In-Situ & Signal of Opportunity Calibration for Antenna Arrays
Modern day aircrafts rely on a plethora of communications and navigation systems to enable secure and reliable flight operations. These systems are designed in isolation and physically separated to prevent interference between services. These choices lead to stove-pipe designs that lack backward compatibility. As a direct consequence, exteriors of...
Published: 3/29/2024   |   Inventor(s): Sharanya Srinivas, Daniel Bliss
Keywords(s): Algorithm Development, Communication, Navigation and Surveillance (CNS), Communications Systems
Category(s): Physical Science, Computing & Information Technology
Conformal Metasurface Antennas for Angle of Arrival Detection
Detecting angle of arrival (AoA) of electromagnetic (EM) signals is a priority for many civil and military applications including navigation, surveillance, and communication systems. The antenna structures typically used for this purpose are required to conform to nearly arbitrary surfaces including robots, cars, aerial vehicles, and missiles. As...
Published: 2/16/2024   |   Inventor(s): Seyedmohammadreza Faghih Imani, Abu Huraira Muhammad Idban
Keywords(s): Aerospace, Communication, Navigation and Surveillance (CNS), Communications Systems, Networks, IT, Software and Communication, PS-Applied Technologies, Signal Processing
Category(s): Applied Technologies, Physical Science
Angle of Arrival Detection using Intensity-Only Data
Many navigation systems rely on detecting the angle of arrival (AoA) of waves to determine desired coordinates. For example, a variety of radar systems deploy AoA detection to deliver desired information about the surrounding area or target of interest. Modern radio environments rely on adaptive beamforming techniques to direct electromagnetic waves...
Published: 1/17/2024   |   Inventor(s): Abu Huraira Muhammad Idban, Seyedmohammadreza Faghih Imani
Keywords(s): Algorithm Development, Communication, Navigation and Surveillance (CNS), Communications Systems, Networks, IT, Software and Communication, PS-Applied Technologies, PS-Wireless and Networking, Signal Processing
Category(s): Applied Technologies, Physical Science, Wireless & Networking
Vibrational Wireless Underground Communication System
Wireless underground sensing networks (WUSNs) aim to provide real-time remote sensing of soil properties and monitoring of underground activities. Most subterranean animals have already mastered the use of vibrations for underground communication, localization of prey, and detection of predators. Humans, on the other hand, have yet to develop communication...
Published: 11/3/2023   |   Inventor(s): Junliang (Julian) Tao, Yi Zhong
Keywords(s): Communications Systems, Environmental, Wireless
Category(s): Applied Technologies, Physical Science
Orthogonal Time Frequency Space (OTFS) Channel Estimation for Massive MIMO Systems
Orthogonal time frequency space (OTFS) modulation has the potential to enable robust communications in highly mobile scenarios. This is due to multiplexing information-bearing data into nearly-constant channels in the delay-Doppler domain instead of the time-frequency domain, which makes communication more resilient to fast changes in the channel....
Published: 10/2/2023   |   Inventor(s): Ahmed Alkhateeb, Shuaifeng Jiang
Keywords(s): Communications Systems, Mobile technology, Networks, IT, Software and Communication, PS-Wireless and Networking
Category(s): Applied Technologies, Computing & Information Technology, Physical Science, Wireless & Networking
Improving Angle Estimation Accuracy for Millimeter-Wave Radars
Radar systems transmit electromagnetic waves through the air and the objects in the aperture reflect the signal. The reflected signal is captured by the radar to find the position, angle, and velocity of each object. Millimeter-wave (mmWave) radar is a subclass of radar systems that uses millimeter waves to operate. The main advantage of mmWave radars...
Published: 8/8/2023   |   Inventor(s): Sule Ozev, Ferhat Ataman, Chethan Kumar, Sandeep Rao
Keywords(s): Aerospace, Communications Systems, Defense/military, Security, Signal Processing
Category(s): Applied Technologies, Computing & Information Technology, Physical Science
Joint Positioning-Communications: Constant Information Ranging for Dynamic Spectrum Access
­Spectral congestion limits the opportunities and performance of radio frequency (RF) systems. Every RF device must share limited spectral resources, which becomes increasingly challenging as more devices are introduced into congested environments. Modern RF technologies must be supported by efficient resource management strategies and cooperation...
Published: 2/23/2023   |   Inventor(s): Sharanya Srinivas, Daniel Bliss
Keywords(s): Communication, Navigation and Surveillance (CNS), Communications Systems, Positioning, Positioning, Navigation and Timing (PNT), Vehicle-to-Vehicle
Category(s): Computing & Information Technology, Physical Science, Wireless & Networking
Efficient Multi-Bit Reconfigurable Reflective Surface (RRS) for mmWave and Terahertz Applications
Background Reflective surfaces, including metasurfaces and reflectarray antennas, are comprised of several subwavelength (< λ/2) passive reflective elements and can steer the reflection of an incident electromagnetic wave in arbitrary directions. Typically, reflective surfaces use one or multiple single-pull-single-through (SPST) switches...
Published: 2/23/2023   |   Inventor(s): Georgios Trichopoulos, Panagiotis Theofanopoulos
Keywords(s): Communications Systems, Defense/military, Imaging, Internet of Things, Mobile technology
Category(s): Computing & Information Technology, Physical Science, Wireless & Networking, Intelligence & Security
Hyper-Precise Positioning and Communications for Radio Networks: Leveraging Time-of-Flight Estimations
Vehicle positioning systems assist operators in travel and operation of air and ground vehicles. For example, aircraft positioning systems assist operators in critical tasks such as landing and takeoff, particularly in low-visibility conditions. Aircraft positioning systems are also key components of remotely controlled tasks such as drone operation....
Published: 2/23/2023   |   Inventor(s): Sharanya Srinivas, Andrew Herschfelt, Daniel Bliss
Keywords(s): Communications Systems, Positioning, Vehicle-to-Vehicle
Category(s): Wireless & Networking, Physical Science, Computing & Information Technology
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