Research

Current Projects

DSRC-Based V2X Communications for Transportation Safety

Sponsor: Georgia Department of Transportation (GDOT)

Vehicle-to-everything (V2X) communications are expected to take a critical role in a variety of transportation safety applications in connected and autonomous vehicle environment. However, Dedicated Short-Range Communications (DSRC), one of the representative technologies implementing V2X communications, is encountering challenges due to the re-allocation of the 5.9 GHz spectrum by the Federal Communications Commission (FCC). The state of Georgia is leading the nation in the deployment of connected vehicle infrastructure with more than 1,700 roadside units (RSUs) operating in DSRC. This project aims at measuring the impact of the spectrum re-allocation on the performance of the Georgia's connected vehicle infrastructure. The project's particular technical focuses are to (i) model the performance of a DSRC system and (ii) design a protocol to improve the DSRC performance, under the FCC's reform of the 5.9 GHz band.

Impacts of Mobility on Performance of Blockchain in V2X Networks

This research investigates how 'mobility' affects the performance of a blockchain system operating in a vehicle-to-everything (V2X) network. The mobility of nodes incurs a unique challenge to a blockchain system due to continuous change and dynamicity in connectivity of the nodes. Specifically, the mobility makes a proof-of-work (PoW) process difficult since, while moving, the nodes can only have a limited length of time for a "rendezvous" to exchange a new block for verification. For this reason, an accurate modeling for the block exchange behavior in a V2X network is also challenging, which nevertheless has not been discussed in previous studies.


Human EMF Exposure in Wearable Communications Systems

The potential of millimeter wave (mmW) frequencies for wireless communications is enormous for applications requiring Gbps throughput. A major concern is human biological safety under radio-frequency (RF) exposure, mainly due to a higher absorption rate of electromagnetic field (EMF) into human skin at such a high frequency. Possible harmful consequences include thermal or non-thermal heat in the affected tissues. To this end, this research performs mathematical analysis of human RF exposure in wireless communications operating in the mmW spectrum.

Fundings

Georgia Department of Transportation (GDOT), Adequacy of DSRC in 5.9 GHz band for GDOT's connected vehicle infrastructure, (Amount and time TBD, PI)

Millennium Corporation, Real-time data analysis to achieve risk reduction and enhanced security monitoring, ($84,557, Jul. 2019 - Jun. 2020, PI)

Georgia Southern University Faculty Development Committee Award, Wireless communications in nanonetwork for healthcare applications, ($9,986, Jul. 2019 - Jun. 2020, PI)

Georgia Southern University College of Engineering and Computing Faculty Research Seed Grant, Low-cost improvement of wireless sensor network for surface water management, ($7,000, Jan. - May 2019, PI)

Georgia Southern University College of Engineering and Computing Faculty Research Seed Grant, Promotion of traffic safety and communication efficacy in connected vehicles, ($8,000, Jan. - May 2019, Co-PI)

Georgia Southern University College of Engineering and Computing Undergraduate Research Award, Security in underwater communications, ($1,684, Jan. - May 2019, Faculty Advisor for Mr. Treston Montoya)

Georgia Southern University Faculty Development Summer Award, Creation of hands-on projects on disaster emergency communications ($3,000, Jun. - Jul. 2018, PI)

Georgia Southern University College of Engineering and Computing Faculty Research Seed Grant, Operation of future cellular communications in shared bands ($8,000, Jan. - May 2018, PI)