Dhaval Patel - Academia.edu (original) (raw)

Papers by Dhaval Patel

International Journal of Research in Computer Science, 2012

Physical layer security (PLS) is an essential way to provide security to users in wireless networ... more Physical layer security (PLS) is an essential way to provide security to users in wireless networks against active or passive attacks. The quantification of the provided security is measured through secrecy outage probability and outage probability. For cognitive vehicular networks (CVN), PLS can increase the amount of the quality of services in infotainment applications. Due to the broadcast nature of the wireless channels, it is challenging to achieve the perfect secrecy between the transmitting and receiving nodes. Furthermore, in CVN, when resources are being shared in an underlay manner, the need arises to find the highest and lowest achievable quantification of performance measures for poor fading scenarios. The knowledge of the maximum achievable performance helps to design and develop the anti eavesdropping solutions. In a particular direction, firstly, this paper finds the closed-form expressions of first-order secrecy metrics over multiple input multiple output 2x2 Nakagam...

The fifth-generation networks, designed to provide a better quality of service and spectrum utili... more The fifth-generation networks, designed to provide a better quality of service and spectrum utilization, are rapidly being deployed across the world. 3GPP has proposed a fairness criterion, referred to as "3GPP fairness", for the coexistence of 5G New Radio in unlicensed spectrum (NR-U) and WiFi in Release 16. In this correspondence, we derive an analytical expression to determine if the 3GPP fairness is achieved in a given network configuration. We model achieving the 3GPP fairness as an optimization problem and show how to use Sequential Quadratic Programming to find the optimal 5G NR U parameters from a pre-decided range. We test the optimizer in various conditions and inspect the effect of various parameters. Our results reveal that the optimizer is able to predict the best possible parameters for 3GPP fairness and therefore the proposed method proves useful for tuning 5G NR-U parameters during their coexistence with WiFi.

Spectrum sensing in cognitive radio paradigm can be categorized as model/analytical and data-base... more Spectrum sensing in cognitive radio paradigm can be categorized as model/analytical and data-based approaches. However, the former is sensitive to model inaccuracies in evolving network environments, while the latter (machine learning/deep learning approach) suffers from high computational complexity and black box-like behaviour. For devices with low computational abilities, such approaches could be rendered less useful. In this context, we propose a deep unfolding architecture namely Primary User-Detection Network (PU-DetNet) that harvests the strength of both: model and data-based approach. In particular, a technique is described that reduces computational complexity. It involves binding loss function such that each layer of proposed architecture possesses its own loss function whose aggregate is optimized during training. Compared to state-of-the-art, experimental results demonstrate that probability of detection is significantly improved as compared to long short term memory (LS...

2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW), 2019

2019 IEEE International Conference on Signals and Systems (ICSigSys), 2019

IEEE Transactions on Wireless Communications, 2021

2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2017

Proceedings of the 2021 International Conference on Management of Data, 2021

IEEE Transactions on Communications, 2021

IEEE Transactions on Cognitive Communications and Networking, 2019

IEEE Transactions on Wireless Communications, 2018

Communications in Computer and Information Science, 2010

WMNs are dynamically self-organizing; self-configuring and self-healing in nature to maintain the... more WMNs are dynamically self-organizing; self-configuring and self-healing in nature to maintain the communication with neighbors in the network. Routing protocols in WMN protocols requires different metrics as compared to ad-hoc network. A performance analysis is done on reactive routing protocols to verify the suitability of reactive routing protocols over WMN under IEEE 802.11s. The suitability of Ad Hoc On-Demand Distance

IEEE Transactions on Power Electronics, 2017

2014 IEEE 16th International Conference on e-Health Networking, Applications and Services (Healthcom), 2014

2008 34th Annual Conference of IEEE Industrial Electronics, 2008

IEEE Transactions on Industrial Electronics, 2010

At present, power demand is increasing day by day so we have to transfer more power and for this ... more At present, power demand is increasing day by day so we have to transfer more power and for this we must have to improve stability limits of our power system. In this paper application of static synchronous series compensator (SSSC) for enhancement of power system stability is throughout investigated. SSSC is effectively utilized for power flow control in the power system. A SSSC-based damping controller is proposed for power oscillation damping and to improve the rotor angle stability. A improved control signal can be superimposed as a power flow control signal for SSSC damping controller to improve the rotor angle stability and power oscillation damping in system. Speed deviation of rotor is taken as the input signal to the SSSC damping controller. A single machine infinite bus system (SMIB) with SSSC is simulated in MATLAB/Simulink software. Simulation results shows the effectiveness of this controller for power system stability enhancement under different fault conditions.