Ridhima MehtaJawaharlal Nehru University | JNU · School of Computer and Systems Sciences
Ridhima Mehta
Ph.D.; M.Tech; B.Tech
Researcher and International Journal Reviewer
About
42
Publications
2,809
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112
Citations
Introduction
Awarded PhD degree in Computer Science and Technology from Jawaharlal Nehru University, New Delhi, India in 2018 under the supervision of Prof. D. K. Lobiyal. PhD Title: Cross-Layer Design and Optimization for Ad-hoc Wireless Networks. My research interests include Cross-layer optimization, Wireless communications, Multiple-objective design, Ad-hoc networks, Artificial intelligence, Genetic algorithm, Fuzzy logic systems, Convex programming, etc.
Publications
Publications (42)
The rapid advancement of wireless technology and routing devices has led to the expeditious evolution of the ad hoc type of networking. The infrastructure-less dynamic network with the error-prone wireless medium in the resource-constrained ad hoc communication system poses several challenges for efficient routing and design optimisation. In this p...
Spatially separated antenna devices in wireless communication system determine the effectiveness of the radio network performance. A non-uniform directional antenna mounted for wireless node localisation radiates energy along one particular direction more than others. In this paper, the performance evaluation of a software-controlled wireless anten...
The efficient signal processing techniques for spread-spectrum code division multiple access (CDMA) systems necessitate data delivery with higher quality-of-service support, diminished error rates and improved channel capacity. In this paper, the impact of interference regulation is explored on various channel-based unique attributes in the wireles...
The generalised model for multipath signal estimation is developed in this work with distinct optimal gain and receives diversity operation deployed in the wireless system. The presented modelling technique determines channel impulse response and complex fading factor for different multipath transmission elements. This study investigates the perfor...
With the ever-increasing load demand throughout the globe, natural renewable resources integrated into the existing network architecture for sustainable energy production are gaining considerable significance. Photovoltaic (PV) generation systems is one such technique to deal with the worldwide challenge for achieving green energy and low carbon fo...
Modelling the users' perception on network services and characteristics representing the efficiency of social media systems incorporates multiple attributes. In this paper, fuzzy logic theory is employed as a computationally intelligent technique for reviewing and assessing performance of the modern social networking sites with broader deployment....
Efficient routing of generated packets through the network with minimal overhead in path discovery and subsequent route maintenance is the fundamental objective required in the modern wireless network operation. Recently, the application of autonomic computational learning techniques for design and optimization of routing protocols in ad hoc networ...
With the rapid growth of ad-hoc wireless technology amidst the huge demands of high data-rates, the simultaneous optimization of overall networking throughput and utility-proportional resource allocation is of utmost significance. The design of infrastructure-less ad-hoc wireless network with highly dynamic operating conditions can be intelligently...
The implementation of the optimal Huffman coding technique for achieving proficient data compression, lower information redundancy and minimal utilization of the scarce bandwidth is essential to handle the effective processing of massive network data. In this paper, we employ cross-layer design technique among the data link, network and presentatio...
The evolving impact of web technology, digital knowledge mining and massive digitization has led to the tremendous growth of digital information systems in the form of digital libraries with electronic data storage services. Dissemination of diverse digital information via global networking provides an effective means for promoting the rapid advanc...
In this chapter, the multi-dimensional fuzzy logic design is implemented to develop smart and pervasive healthcare application systems for determining the risk status of cardiac patients. This heuristic decision-making and fuzzy reasoning mechanism is based on the medical observations of several miscellaneous physiological conditions of systolic bl...
With the advent of ubiquitous networking technologies, there has been plentitude of research proposals in the context of cross-layer design for wireless communication systems. This network design approach is particularly important for the implementation of ad-hoc wireless networks with limited channel accessibility, power-constrained operation and...
Due to quick and inexpensive deployment, decentralized wireless ad-hoc networks have many potential application domains. However, stringent resource constraints, user mobility, limited channel capacity and high error rate of packets received at the wireless network interfaces make the design and optimization of these networks a challenging task. To...
With the ever-increasing deployment of wireless communication technologies, effective management of scarce power and radio spectrum resources is of primary concern. The available bandwidth spectrum should be utilized in the most efficient and controlled way for practical economic growth of industries in conformity with the evolving demand of energy...
Frequent packet loss and power inadequacy are the major issues in wireless fading networks owing to the deep fading effects and inefficient resource utilization caused by unoriented information forwarding mechanisms. Diversity techniques are potentially employed in wireless communication systems to combat the impact of fading and reinforce the desi...
The exemplary design of green buildings incorporates multiple correlated parameters that should be optimally selected and updated to ensure effective energy management and sustainable impact of building architecture on the ecosystem. In this paper, the adaptive modeling and development of such sustainable buildings with several unpredictable and qu...
In recent times, the application of autonomic soft computing techniques for design and optimization of wireless access networks is progressively becoming prevalent. These computational learning techniques are capable of handling uncertain and imprecise networking information while driving toward the optimal solution set in the problem search space....
Purpose
This paper aims to evaluate the user satisfaction criterion for qualitative assessment of timeliness and efficacy of digital libraries based on the multivariate fuzzy logic technique.
Design/methodology/approach
In this paper, the performance of digital library services using fuzzy logic modeling are evaluated. This model based on fuzzy lo...
Plant tolerance to ecological stresses is the key issue faced by the plant scientists in the agricultural sector. The impact of rapidly changing environment conditions coupled with the scarcity of natural resources has driven an increased adoption in crop adaptive strategies for their controlled growth and development under uncertain ecological con...
Modern wireless communication networks frequently have lower application throughput due to higher number of collisions and subsequent retransmission of data packets. Moreover, these networks are characterized by restricted computational capacity due to limited node‐battery power. These challenges can be assessed for deploying fast, reliable network...
Sustainable operation of energy-restrained wireless network services requires multiple objectives to be satisfied synchronously. Among these objectives, reduced spectrum outage, energy conservation, and minimal packet transmission failures considerably affect the energy harvesting operation of these networks. These three objectives are associated w...
Effective data compression and sustainable management of limited bandwidth are the fundamental challenges in the design of current ad-hoc wireless networks. Dynamic Huff- man coding protocol with optimal prefix-free codewords assigned to network parameters through cross-layer methodology can considerably address these issues for performance enhance...
In this paper, we develop a multi-dimensional mathematical optimisation problem for predicting the optimised path loss in general wireless systems under non-linear network operating constraints. The proposed nonconvex optimisation problem is reformulated through convex relaxation programming in order to guarantee global optimal solution. The underl...
In this paper, we propose a novel dynamic and robust queue management algorithm based on fuzzy logic. The presented mathematical framework employs fuzzy decision-making with multiple attributes incorporated in the fuzzy logic controller. The fuzzy inputs in our system are the total queuing time, mean lifetime, and mean queue length associated with...
In this article, we propose and formulate a single‐objective nonlinearly constrained programming problem with delay and capacity constraints. Specifically, we consider the utility resource allocation with the goal of maximizing the throughput amongst the multiple heterogeneous sessions in the network. Several numerical experiments for multiple topo...
This paper proposes a least squares (LS) channel estimation method in a multiple-input single-output (MISO) downlink wireless scenario. The presented scheme employs transmit antenna diversity to accomplish the reliable data reception and the improved system performance. Based on the knowledge of the received output vector and the training pilot mat...
In ad‐hoc wireless networks, to achieve good performance, multiple parameters need to be optimized jointly. However, existing literature lacks a design framework that investigates the synchronic impact of several parameters on overall system performance. Among several design parameters, energy conservation, end‐to‐end delay minimization, and improv...
In this paper, we evaluate and analyze network coding across many sessions in random access wireless challenged networks with inherent resource limitations. The proposed work addresses the problem of joint optimal coding, rate control, power control and flow control schemes. For this, we employ cross-layer optimization model for multiple unicast se...
In this paper, we study and evaluate a single-server First-in First-out (FIFO) queue by varying the packet inter-arrival and service times. The queuing network model is developed to evaluate the performance of Quality of Service (QoS) provisioning for providing high-quality services to the network users and to implement congestion management scheme...
In this paper, we propose and formulate a univariate
single-objective nonlinear programming problem subject to linear
inequality constraints. A number of numerical experiments for
several topologies demonstrate the performance and global
convergence process of the proposed iterative algorithm. These
network topologies are considered with multi...
The conventional protocol architectures based on rigid and inflexible layering principles are not suitable to meet the key challenges posed by ad-hoc networks. To overcome the performance limitations caused by lack of coordination between layers, the communication protocols crossing different layers need to be optimized jointly. In this paper, we e...
In this paper, we employ three different optimization methods to solve a bi-objective cross-layer design problem in ad-hoc networks. These methods are active-set, interior-point and sequential quadratic programming (SQP) methods. Specifically, we formulate the proposed problem as a nonlinear optimization problem subject to the underlying network op...
Power saving and high throughput are two key issues in the design of ad-hoc wireless networks with multiple users. In addition, ensuring a degree of fairness among competing end users plays an important role in performance of these networks. The utility function associated with a source node accurately exhibits the QoS demand for different user app...