Receiver design and time of arrival estimation for opportunistic localization with 5G signals

K Shamaei, ZM Kassas - IEEE Transactions on Wireless …, 2021 - ieeexplore.ieee.org
A comprehensive approach for opportunistic navigation with fifth-generation (5G) cellular
signals that exploits the downlink channel is developed. The structure of possible 5G …

Opportunistic navigation with Doppler measurements from Iridium Next and Orbcomm LEO satellites

M Orabi, J Khalife, ZM Kassas - 2021 IEEE Aerospace …, 2021 - ieeexplore.ieee.org
A framework for opportunistic navigation with multi-constellation low Earth orbit (LEO)
satellite signals is proposed. A receiver architecture suitable for processing both time …

A joint TOA and DOA acquisition and tracking approach for positioning with LTE signals

K Shamaei, ZM Kassas - IEEE Transactions on Signal …, 2021 - ieeexplore.ieee.org
A receiver structure is proposed to jointly estimate the time-of-arrival (TOA) and azimuth and
elevation angles of direction-of-arrival (DOA) from received cellular long-term evolution …

Sub-meter accurate UAV navigation and cycle slip detection with LTE carrier phase measurements

K Shamaei, ZM Kassas - Proceedings of the 32nd international technical …, 2019 - ion.org
A method to obtain sub-meter level navigation accuracy with cellular long-term evolution
(LTE) signals is developed. The proposed method utilizes an LTE software-defined receiver …

Multipath mitigation via synthetic aperture beamforming for indoor and deep urban navigation

AA Abdallah, ZM Kassas - IEEE Transactions on Vehicular …, 2021 - ieeexplore.ieee.org
A synthetic aperture navigation (SAN) system that exploits downlink cellular long-term
evolution (LTE) signals and an inertial measurement unit (IMU) is developed. The system is …

A pedestrian indoor navigation system using deep-learning-aided cellular signals and ZUPT-aided foot-mounted IMUs

AA Abdallah, CS Jao, ZM Kassas… - IEEE Sensors …, 2021 - ieeexplore.ieee.org
A signal-sensor-based indoor pedestrian navigation system is developed. The proposed
system: 1) utilizes a foot-mounted inertial navigation system (INS), in which the accumulated …

I am not afraid of the jammer: navigating with signals of opportunity in GPS-denied environments

ZM Kassas, J Khalife, A Abdallah, C Lee - … Meeting of the Satellite Division of …, 2020 - ion.org
I am not afraid of the GPS jammer, as long as there are ambient signals of opportunity
(SOPs) to exploit in the environment. In environments where GPS signals are challenged …

Assessing real 5G signals for opportunistic navigation

AA Abdallah, K Shamaei, ZM Kassas - … Meeting of the Satellite Division of …, 2020 - ion.org
Cellular fifth-generation (5G) signals are assessed for opportunistic navigation. A carrier-
aided code-based software-defined receiver (SDR) is presented, which produces navigation …

Navigation from low-earth orbit

ZZM Kassas - Position, navigation, and timing technologies in …, 2020 - books.google.com
The promise of broadband low-Earth orbit (LEO) satellite signals for positioning, navigation,
and timing (PNT) has been demonstrated in the past decade [1–7]. While some LEO-based …

Software-defined radio network positioning technology design. Problem statement

G Fokin, D Volgushev - … Generating and Processing in the Field …, 2022 - ieeexplore.ieee.org
User equipment (UE) location estimation using existing cellular and other wireless
communications systems infrastructure is an up-to-date and in demand field of research and …