A5048078970- Advanced MIMO Systems Optimization
- Advanced Wireless Communication Technologies
- Millimeter-Wave Propagation and Modeling
- Telecommunications and Broadcasting Technologies
- Power Line Communications and Noise
- Radio Wave Propagation Studies
- Software-Defined Networks and 5G
- Cognitive Radio Networks and Spectrum Sensing
- Full-Duplex Wireless Communications
- UAV Applications and Optimization
- Advanced Wireless Communication Techniques
- Advanced Control Systems Optimization
- Power System Reliability and Maintenance
- Extremum Seeking Control Systems
- PAPR reduction in OFDM
- Electromagnetic Compatibility and Noise Suppression
- Electric Motor Design and Analysis
- Wireless Communication Networks Research
- Indoor and Outdoor Localization Technologies
- Advanced Wireless Network Optimization
- Cooperative Communication and Network Coding
- IoT and Edge/Fog Computing
- Multilevel Inverters and Converters
- Smart Grid Security and Resilience
- Smart Grid and Power Systems
Virginia Tech
1995-2024
This tutorial seeks to outline the proposed Open Radio Access Network (O-RAN) deployment for Fifth generation (5G) wireless networks. O-RAN supplant hardware-specific (RAN) components (e.g., mobility management entity (MME) or base station (gNB)) with generic hardware, specialized software, and open signaling interfaces. The virtualization network slicing features of 5G allow software replace previously hardware specific functions. Software further provides faster analytics, thus supporting...
Open Radio Access Network (O-RAN), defined by the O-RAN Alliance, is quickly emerging as one of most critical RAN architectures for designing and deploying future cellular networks. aims to use openness intelligence solve new research problems that arise from broad set services offered 5G. However, lack end-to-end, stable, open-source platforms offering realistic environments has limited progress in developing effective solutions. This paper describes an 3GPP-compliant O-RAN-based 5G testbed...
The advent of 5G NR (New Radio) technology has enabled a wide range new use cases in commercial and tactical communications, particularly the realm Ultra-Reliable Low-Latency Communications (URLLC). In conventional approach supported by 3GPP standards, URLLC transmissions tend to preempt ongoing lower-priority (such as enhanced Mobile Broadband), degrading Quality Service (QoS) for preempted transmissions. This paper proposes novel frequency-domain spread spectrum underlay signal technique...
The advent of 5G positioning techniques by 3GPP has unlocked possibilities for applications in public safety, vehicular systems, and location-based services. However, these demand accurate reliable performance, which led to the proposal newer techniques. To further advance research on techniques, this paper, we develop a 3GPP-compliant testbed, incorporating gNodeBs (gNBs) User Equipment (UE). testbed uses New Radio (NR) Positioning Reference Signals (PRS) transmitted gNB generate Time...
This paper describes a method for simulating the switching of reactive devices in Security Analysis function at Florida Power and Light Company System Control Center. The closely simulates automatic field, resolves problems non-convergence some highly critical contingencies, provides tools better VAR management device control, thus relieves system operator from guesswork interpreting results. Real time results are also presented to show effectiveness method.
An increasing role of artificial neural networks (ANNs) in various engineering applications has spurred interest power electronics and motor drives. In this paper, ANNs are utilized to achieve vector control end parameter compensation for the high performance permanent magnet synchronous (PMSM). The overall system is capable achieving concurrent mutual flux linkages torque presence variations over a wide range speed. A requirement an on-line estimation respective varying parameters. proposed...
For emergency response scenarios like firefighting in urban environments, there is a need to both localize responders inside the building and also support high bandwidth communication link between command-and-control center. The networks for such can be established with quick deployment of Unmanned Aerial Vehicles (UAVs). Further, 3D mobility UAVs leveraged improve quality wireless by maneuvering them into advantageous locations. This has motivated recent propagation measurement campaigns...
Underlay communication enhances spectrum efficiency by enabling devices to share the same frequency band as cellular network, thereby facilitating device-to-device (D2D) and sidelink communications. faces a critical challenge from co-channel interference (CCI) concurrent signals in channel. However, many underlay studies neglect address effective cancellation methods or propose complex models. In this paper we proposed two (CCIC) methods, trading off between computational overhead...
For emergency response scenarios like firefighting in urban environments, there is a need to both localize responders inside the building and also support high bandwidth communication link between command-and-control center. The networks for such can be established with quick deployment of Unmanned Aerial Vehicles (UAVs). Further, 3D mobility UAVs leveraged improve quality wireless by maneuvering them into advantageous locations. This has motivated recent propagation measurement campaigns...
Our demonstration showcases the proof-of-concept for a 5G compatible underlay within standalone (SA) srsRAN software with transmission at gNodeB and reception User Equipment (UE). We used two links between Equipment, i.e., zeroMQ link to test evaluate functionality of in controlled channel environments an over-the-air using software-defined radios demonstrate coexistence. shows that low-data rate resilient communication is possible through concurrent other NR channels (specifically, PDSCH)...
A boiler system is an integral component of a thermal power plant, and control the water level in drum critical operational consideration. For control, 3-element proportional-integral-derivative (PID) popular conventional approach. This scheme works satisfactorily absence any process disturbances. However, when there are significant disturbances, PID does not perform well because lack knowledge proper controller gains to cope with such Inevitably over time use, controllers get detuned....
5G has received significant interest from commercial as well defense industries. However, resiliency in remains a major concern for its use military and applications. In this paper, we explore physical layer enhancements narrow-band Internet of Things (NB-IoT) study case. Two modifications, frequency hopping, direct sequence spreading, are analyzed the standpoint implementation performance. Simulation results show that these techniques effective to harden interference jamming. A discussion...