All Outputs (38)

Performance Analysis of Multiport Antennas in Vehicle-to-Vehicle Communication Channels (2024)
Journal Article
Pour Sohrab, A., Huang, Y., & Karadimas, P. (2024). Performance Analysis of Multiport Antennas in Vehicle-to-Vehicle Communication Channels. Wireless Personal Communications, 134, 1231–1257. https://doi.org/10.1007/s11277-024-10875-0

A holistic performance analysis and classification of multiport antennas (MPAs) is conducted in this paper. We focus on 5.9 GHz vehicle-to-vehicle communications suited to the emerging technology of intelligent transportation systems. Three-dimension... Read More about Performance Analysis of Multiport Antennas in Vehicle-to-Vehicle Communication Channels.

Channel Modeling for 6G Programmable Wireless Environment (2023)
Book Chapter
Karadimas, P., Hossain, M. S., & Tariq, F. (2023). Channel Modeling for 6G Programmable Wireless Environment. In F. Tariq, M. Khandaker, & I. Shafique Ansari (Eds.), 6G Wireless: The Communication Paradigm Beyond 2030 (59-72). CRC Press. https://doi.org/10.1201/9781003282211-4

In 6G wireless networks [1], the requirements for high data rates and low power consumption can be met by addressing the impact of wireless propagation. This can be achieved through diversity combining and multiple input multiple output (MIMO) techni... Read More about Channel Modeling for 6G Programmable Wireless Environment.

An Efficient Cross-Layer Authentication Scheme for Secure Communication in Vehicular Ad-hoc Networks (2023)
Journal Article
Shawky, M. A., Bottarelli, M., Epiphaniou, G., & Karadimas, P. (2023). An Efficient Cross-Layer Authentication Scheme for Secure Communication in Vehicular Ad-hoc Networks. IEEE Transactions on Vehicular Technology, 72(7), 8738 - 8754. https://doi.org/10.1109/TVT.2023.3244077

Intelligent transportation systems contribute to improved traffic safety by facilitating real-time communication between vehicles and infrastructures. In this context, message authentication is crucial to safeguard vehicular ad-hoc networks (VANETs)... Read More about An Efficient Cross-Layer Authentication Scheme for Secure Communication in Vehicular Ad-hoc Networks.

Spatial Channel Degrees of Freedom for Optimum Antenna Arrays (2023)
Journal Article
Huang, Y., Karadimas, P., & Sohrab, A. P. (2023). Spatial Channel Degrees of Freedom for Optimum Antenna Arrays. IEEE Transactions on Wireless Communications, 22(8), 5129-5144. https://doi.org/10.1109/TWC.2022.3231732

One of the ultimate goals of future wireless networks is to maximize data rates to accommodate bandwidth-hungry services and applications. Thus, extracting the maximum amount of information bits for given spatial constraints when designing wireless s... Read More about Spatial Channel Degrees of Freedom for Optimum Antenna Arrays.

Adaptive and Optimum Secret Key Establishment for Secure Vehicular Communications (2021)
Journal Article
Bottarelli, M., Karadimas, P., Epiphaniou, G., Ismail, D. K. B., & Maple, C. (2021). Adaptive and Optimum Secret Key Establishment for Secure Vehicular Communications. IEEE Transactions on Vehicular Technology, 70(3), 2310-2321. https://doi.org/10.1109/tvt.2021.3056638

In intelligent transportation systems (ITS), communications between vehicles, i.e. vehicle-to-vehicle (V2V) communications are of greatest importance to facilitate autonomous driving. The current state-of-the-art for secure data exchange in V2V commu... Read More about Adaptive and Optimum Secret Key Establishment for Secure Vehicular Communications.

Multi-Antenna Array Topologies Optimization for Future Wireless Networks by Employing Particle Swarm Optimization (2019)
Presentation / Conference Contribution
Huang, Y. K., Karadimas, P., & Sohrab, A. P. (2019, June). Multi-Antenna Array Topologies Optimization for Future Wireless Networks by Employing Particle Swarm Optimization. Presented at 2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring), Rome, Italy

The purpose of this work is to design novel antenna array topologies that maximize channel capacity. Accordingly, we employ the particle swarm optimization (PSO) algorithm as an effective technique in similar electromagnetic problems. We use a novel... Read More about Multi-Antenna Array Topologies Optimization for Future Wireless Networks by Employing Particle Swarm Optimization.

Covariance Matrix Evaluation of a Diversity Slot Antenna for Vehicular Communications (2019)
Presentation / Conference Contribution
Sohrab, A. P., Karadimas, P., & Huang, Y. (2019, July). Covariance Matrix Evaluation of a Diversity Slot Antenna for Vehicular Communications. Presented at 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Atlanta, GA, USA

A dual-port slot antenna is proposed for vehicular communications. The antenna works at 5.9 GHz in intelligent transportation system (ITS) band. The diversity performance of the design is evaluated using a novel covariance matrix methodology based on... Read More about Covariance Matrix Evaluation of a Diversity Slot Antenna for Vehicular Communications.

Diversity Antenna for Vehicular Communications in Microwave and mm-Wave Bands (2019)
Presentation / Conference Contribution
Sohrab, A. P., Karadimas, P., & Huang, Y. (2019, September). Diversity Antenna for Vehicular Communications in Microwave and mm-Wave Bands. Presented at 2019 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC), Granada, Spain

A dual band diversity antenna is proposed for vehicular communications. The antenna works at both 5.9 GHz and 60 GHz simultaneously which makes it a suitable candidate for next generation intelligent transportation systems (ITS). High isolation of th... Read More about Diversity Antenna for Vehicular Communications in Microwave and mm-Wave Bands.

Optimal Antenna Array Topologies for Energy Efficiency Maximization by Employing Particle Swarm Optimization (2019)
Presentation / Conference Contribution
Huang, Y., Karadimas, P., & Sohrab, A. P. (2019, September). Optimal Antenna Array Topologies for Energy Efficiency Maximization by Employing Particle Swarm Optimization. Presented at 2019 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC), Granada, Spain

The purpose of this work is to design novel antenna array topologies that maximize the energy efficiency (EE) in multiple-input-multiple-output (MIMO) wireless systems. To provide insights into EE optimization issues, the particle swarm optimization... Read More about Optimal Antenna Array Topologies for Energy Efficiency Maximization by Employing Particle Swarm Optimization.

Optimizing Turbo Codes for Secret Key Generation in Vehicular Ad Hoc Networks (2019)
Presentation / Conference Contribution
Ismail, D. K. B., Karadimas, P., Epiphaniou, G., & Al-Khateeb, H. (2019, January). Optimizing Turbo Codes for Secret Key Generation in Vehicular Ad Hoc Networks. Presented at 1st American University in the Emirates International Research Conference, Dubai, UAE

We present an algorithm that allows two users to establish a symmetric cryptographic key by incorporating the most important features of the wireless channel in vehicle-to-vehicle (V2V) communication. Non-reciprocity compensation is combined with tur... Read More about Optimizing Turbo Codes for Secret Key Generation in Vehicular Ad Hoc Networks.

Flexible RFID Patch for Food Spoilage Monitoring (2018)
Presentation / Conference Contribution
Yuan, M., Ghannam, R., Karadimas, P., & Heidari, H. (2018, October). Flexible RFID Patch for Food Spoilage Monitoring. Presented at 2018 IEEE Asia Pacific Conference on Postgraduate Research in Microelectronics and Electronics (PrimeAsia), Chengdu, China

When food is reversed under an inappropriate situation, for example inadequate temperature, foodstuff would turn rotten as a result of the rapid breed of food spoilage bacteria under warm and wet circumstances where bacteria can be easily generated,... Read More about Flexible RFID Patch for Food Spoilage Monitoring.

Quantisation feasibility and performance of RSS-based secret key extraction in VANETs (2018)
Presentation / Conference Contribution
Bottarelli, M., Epiphaniou, G., Ben Ismail, D. K., Karadimas, P., & Al-Khateeb, H. (2018, June). Quantisation feasibility and performance of RSS-based secret key extraction in VANETs. Presented at 2018 International Conference on Cyber Security and Protection of Digital Services (Cyber Security), Glasgow

Vehicular Ad Hoc Networks (VANETs) has emerged as a unique implementation of Mobile Ad Hoc Networks (MANETs). These networks promise to increase road safety and improve the driving experience by exploiting recent advances in wireless technologies for... Read More about Quantisation feasibility and performance of RSS-based secret key extraction in VANETs.

Error Reconciliation with Turbo Codes for Secret Key Generation in Vehicular Ad Hoc Networks (2018)
Presentation / Conference Contribution
Ben Ismail, D. K., Karadimas, P., Epiphaniou, G., & Al-Khateeb, H. M. (2018, July). Error Reconciliation with Turbo Codes for Secret Key Generation in Vehicular Ad Hoc Networks. Presented at 2018 Computing Conference, London

We present an algorithm that allows two users to establish a symmetric cryptographic key by incorporating the most important features of the wireless channel in vehicle-to-vehicle (V2V) communication. The proposed model includes surrounding scatterer... Read More about Error Reconciliation with Turbo Codes for Secret Key Generation in Vehicular Ad Hoc Networks.

Physical characteristics of wireless communication channels for secret key establishment: A survey of the research (2018)
Journal Article
Bottarelli, M., Epiphaniou, G., Ismail, D. K. B., Karadimas, P., & Al-Khateeb, H. (2018). Physical characteristics of wireless communication channels for secret key establishment: A survey of the research. Computers and Security, 78, 454-476. https://doi.org/10.1016/j.cose.2018.08.001

Physical layer security protocols have recently been deployed in the context of Wireless communications. These are derived from the intrinsic characteristics of the communication media for key generation, sharing and randomness extraction. These prot... Read More about Physical characteristics of wireless communication channels for secret key establishment: A survey of the research.

Proactive Threat Detection for Connected Cars Using Recursive Bayesian Estimation (2017)
Journal Article
al-Khateeb, H., Epiphaniou, G., Reviczky, A., Karadimas, P., & Heidari, H. (2018). Proactive Threat Detection for Connected Cars Using Recursive Bayesian Estimation. IEEE Sensors Journal, 18(12), 4822-4831. https://doi.org/10.1109/jsen.2017.2782751

Upcoming disruptive technologies around autonomous driving of connected cars have not yet been matched with appropriate security by design principles and lack approaches to incorporate proactive preventative measures in the wake of increased cyber-th... Read More about Proactive Threat Detection for Connected Cars Using Recursive Bayesian Estimation.

Nonreciprocity Compensation Combined With Turbo Codes for Secret Key Generation in Vehicular Ad Hoc Social IoT Networks (2017)
Journal Article
Epiphaniou, G., Karadimas, P., Kbaier Ben Ismail, D., Al-Khateeb, H., Dehghantanha, A., & Choo, K.-K. R. (2018). Nonreciprocity Compensation Combined With Turbo Codes for Secret Key Generation in Vehicular Ad Hoc Social IoT Networks. IEEE Internet of Things, 5(4), 2496-2505. https://doi.org/10.1109/jiot.2017.2764384

The physical attributes of the dynamic vehicle-to-vehicle propagation channel can be utilized for the generation of highly random and symmetric cryptographic keys. However, in a physical-layer key agreement scheme, nonreciprocity due to inherent chan... Read More about Nonreciprocity Compensation Combined With Turbo Codes for Secret Key Generation in Vehicular Ad Hoc Social IoT Networks.

On the Covariance Matrix and Diversity Performance Evaluation of Compact Multiport Antenna Systems (2017)
Journal Article
Papamichael, V., & Karadimas, P. (2017). On the Covariance Matrix and Diversity Performance Evaluation of Compact Multiport Antenna Systems. IEEE Transactions on Antennas and Propagation, 65(11), 6140-6144. https://doi.org/10.1109/tap.2017.2754439

In this communication, we present a new electromagnetic methodology that determines the covariance matrix of compact multiport antenna (MPA) systems at the early design stage. Further insight into this field is provided, as contrary to existing metho... Read More about On the Covariance Matrix and Diversity Performance Evaluation of Compact Multiport Antenna Systems.

Energy Detection Based Spectrum Sensing Over Two-Wave With Diffuse Power Fading Channels (2016)
Journal Article
Chatziantoniou, E., Allen, B., Velisavljevic, V., Karadimas, P., & Coon, J. (2016). Energy Detection Based Spectrum Sensing Over Two-Wave With Diffuse Power Fading Channels. IEEE Transactions on Vehicular Technology, 66(1), 868-874. https://doi.org/10.1109/tvt.2016.2556084

One of the most important factors that affects the performance of energy detection (ED) is the fading channel between the wireless nodes. This paper investigates the performance of ED-based spectrum sensing, for cognitive radio (CR), over two-wave wi... Read More about Energy Detection Based Spectrum Sensing Over Two-Wave With Diffuse Power Fading Channels.

New Intuitive Metrics for Diversity Performance Evaluation of Multi-element Antenna Systems (2015)
Presentation / Conference Contribution
Papamichael, V., & Karadimas, P. (2015, July). New Intuitive Metrics for Diversity Performance Evaluation of Multi-element Antenna Systems. Presented at Progress In Electromagnetics Research Symposium (PIERS 2015), Prague, Czech Republic

Diversity performance of multi-element antenna (MEA) systems is evaluated using several metrics. The most common are the diversity antenna gain (DAG), the effective diversity gain (EDG) and the actual diversity gain (ADG). These metrics calculate the... Read More about New Intuitive Metrics for Diversity Performance Evaluation of Multi-element Antenna Systems.

Generic stochastic modeling of vehicle-to-vehicle wireless channels (2014)
Journal Article
Karadimas, P., & Matolak, D. (2014). Generic stochastic modeling of vehicle-to-vehicle wireless channels. Vehicular Communications, 1(4), 153-167. https://doi.org/10.1016/j.vehcom.2014.08.001

We present a generic statistical characterization of the vehicle-to-vehicle (V–V) wireless channel by adopting a stochastic modeling approach. Our approach is based on the doubly underspread (DU) property of non-wide sense stationary uncorrelated sca... Read More about Generic stochastic modeling of vehicle-to-vehicle wireless channels.