RESEARCH EXPERIENCE

Post-Doctoral Research Associate (March 2020 - Present).

Currently, I am associated with the following projects:

• InWIP-NETs : Integrated Wireless Information and Power Networks
• AGNOSTIC : Actively Enhanced Cognition based Framework for Design of Complex Systems
• ProCAST: Proactive Edge CAching for Content Delivery Networks powered by Hybrid Satellite/Terrestrial Backhauling
• HTS-DBS: High Throughput Digital Broadcasting Satellite Systems (CCN - 1)
• 5G-Sky: Interconnecting the Sky in 5G and Beyond – A Joint Communication and Control Approach

My present research work pertains to (but not limited to) the following domains:

• Multi-group (MG) Multicasting (MC) for SWIPT
• Precoder Designing for SWIPT-enabled MG-MC systems
• Symbol-Level Precoding for SWIPT systems
• Hybrid Backscatter and Relaying systems
• UAV with Backscatter and Caching system
• High Throughput Digital Broadcasting Satellite systems
• Distributed Caching systems and architectures

Ph.D. in Informatique (Computer Science) Thesis – Design and Optimization of Simultaneous Wireless Information and Power Transfer Systems (May 2017 - Feb 2020).

The recent trends in the domain of wireless communications indicate severe upcoming challenges, both in terms of infrastructure as well as design of novel techniques. On the other hand, the world population keeps witnessing or hearing about new generations of mobile/wireless technologies within every half to one decade. It is certain the wireless communication systems have enabled the exchange of information without any physical cable(s), however, the dependence of the mobile devices on the power cables still persist. Each passing year unveils several critical challenges related to the increasing capacity and performance needs, power optimization at complex hardware circuitries, mobility of the users, and demand for even better energy efficiency algorithms at the wireless devices. Moreover, an additional issue is raised in the form of continuous battery drainage at these limited-power devices for sufficing their assertive demands. In this regard, optimal performance at any device is heavily constrained by either wired, or an inductive based wireless recharging of the equipment on a continuous basis. This process is very inconvenient and such a problem is foreseen to persist in future, irrespective of the wireless communication method used. Recently, a promising idea for simultaneous wireless radio-frequency (RF) transmission of information and energy came into spotlight during the last decade. This technique does not only guarantee a more flexible recharging alternative, but also ensures its co-existence with any of the existing (RF-based) or alternatively proposed methods of wireless communications, such as visible light communications (VLC) (e.g., Light Fidelity (Li-Fi)), optical communications (e.g., LASER-equipped communication systems), and far-envisioned quantum-based communication systems. In addition, this scheme is expected to cater to the needs of many current and future technologies like wearable devices, sensors used in hazardous areas, 5G and beyond, etc. This Thesis presents a detailed investigation of several interesting scenarios in this direction, specifically concerning design and optimization of such RF-based power transfer systems.

Research Advisors - Prof. Symeon Chatzinotas and Prof. Björn Ottersten.

MS in Electronics and Communications by Research Thesis – Simultaneous Wireless Information and Energy Transfer in Multicarrier and Cooperative Communication Systems (March 2014 - October 2016).

Increasing complexity and diminishing size of wireless devices often lead to quick depletion of energy stored in batteries with limited capacity. In certain applications, sensors are often installed at locations that are hazardous or inaccessible, which makes the battery replacement or recharging impossible. This could often lead to interruptions in the operation of the network. In such scenarios, transferring energy to these devices wirelessly plays a significant role in prolonging the life of the sensor networks. Since most of these devices perform wireless communication, it is of practical interest to consider the transfer of energy to the device using the same electromagnetic wave that is used for communication. This technique, termed ‘simultaneous wireless information and energy transmission (SWIET)’, holds great promise in many applications. SWIET enables joint transfer of data and energy to the receiver, which performs both information decoding and energy harvesting simultaneously from the same received electromagnetic wave. This technique will be central to various emerging technologies and has gathered considerable attention recently. Many current and future technologies like wearable devices, sensors used in hazardous areas, 5G and beyond, etc., are expected to use SWIET technique. In this work, we develop transceiver algorithms for the application of SWIET in two types of communication networks, namely, SWIET in a wireless network employing multicarrier transmission technique, and SWIET in a cooperative network employing amplify-and-forward (AF) relays.

Research Advisor - Dr. Ubaidulla P.