NALLAGONDA VIJAYA RATNAM

@pscmr.ac.in

Associate Professor and Electronics and Communication Engineering
PSCMR college of Engineering and Technology

NALLAGONDA VIJAYA RATNAM


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https://researchid.co/vijayaratnam
My intense desire is to work with an esteemed organization, where I could be on my better way to visualize bright career by serving the concern with my able professional skills and for that I will always keep improving my skills through regular studying in the concerned field.

EDUCATION

Ph.D National Institute of Technology Karnataka (NITK)
M.Tech National Institute of Technology Rourkela (NITR)
B.Tech (ECE) GEC Engineering College, Gudlavalleru,
JNTU Kakinada

RESEARCH, TEACHING, or OTHER INTERESTS

Electronic, Optical and Magnetic Materials, Signal Processing, Computer Networks and Communications, Computer Science Applications

FUTURE PROJECTS

Development of a UAV equipped FSO transceiver system (10Gbps) for next generation wireless communication systems.

The rapid growth of data-intensive applications and the evolution toward next-generation (5G/6G) wireless networks demand ultra-high-capacity, low-latency, and flexible communication solutions. Unmanned Aerial Vehicle (UAV)–equipped Free-Space Optical (FSO) communication systems have emerged as a promising technology to address these requirements by combining the mobility of UAVs with the high bandwidth and security of optical wireless links. This work presents the development and performance evaluation of a UAV-mounted FSO transceiver system capable of supporting data rates up to 10 Gbps for next-generation wireless communication systems. The proposed system architecture integrates a compact optical transceiver, high-speed modulation and detection modules, and a lightweight pointing, acquisition, and tracking (PAT) mechanism to maintain reliable line-of-sight links under UAV mobility. Atmospheric channel impairments such as turbulence-induced fading, beam divergence, and pointing err


Applications Invited
funding
5

Scopus Publications

48

Scholar Citations

3

Scholar h-index

3

Scholar i10-index

Scopus Publications

RECENT SCHOLAR PUBLICATIONS

  • Performance analysis of high-altitude platform-underwater wireless optical communication systems with decode-and-forward relaying
    VR Nallagonda, RR Maturi, SSR Manchikalapudi, B Dantuluri, ...
    Optical Engineering 65 (2), 026101-026101 , 2026
    2026.0
  • Swarm UAVS with FSO systems: a performance analysis using differential chaos shift keying modulation
    VR Nallagonda, R Bhukya, D Sridhar, N Siva NagaRaju, R Gogineni
    Optical and Quantum Electronics 57 (11), 1-22 , 2025
    2025.0
  • Regional Variability of Lightning Activity in Pakistan: The Role of Atmospheric and Cloud Properties
    R Gogineni, N Umakanth, NV Ratnam, Y RamaKrishna, K SivaKrishna, ...
    Atmospheric and Oceanic Optics 38 (5), 591-600 , 2025
    2025.0
  • A performance study of an inter-UAV-based free space optical (FSO) system in the maritime environment
    VR Nallagonda, NS Nagaraju, D Bhavani, R Gogineni, S Mudunuru, ...
    Journal of Optical Communications , 2025
    2025.0
  • A miniaturized quad port highly isolated triple band notched UWB-MIMO diversity antenna
    T Sushma, R Gogineni, NV Ratnam, SR Babu, S Mandava, PVK Kanth
    Progress In Electromagnetics Research C 152, 43-53 , 2025
    2025.0
    Citations: 3
  • Performance analysis and enhancement of unmanned aerial vehicle based free space optical communication system
    NV Ratnam
    National Institute of Technology Karnataka, Surathkal , 2022
    2022.0
    Citations: 2
  • Bit error rate analysis of ground-to-high altitude platform free-space optical communications using coded polarization shift keying in various weather conditions
    V Ratnam, P Krishnan
    Optical and Quantum Electronics 54 (1), 27 , 2022
    2022.0
    Citations: 10
  • Bit error rate analysis of polarization shift keying based free space optical link over different weather conditions for inter unmanned aerial vehicles communications
    VR Nallagonda, P Krishnan
    Optical and Quantum Electronics 53 (9), 538 , 2021
    2021.0
    Citations: 12
  • Performance analysis of FSO based inter-UAV communication systems
    VR Nallagonda, P Krishnan
    Optical and Quantum Electronics 53 (4), 192 , 2021
    2021.0
    Citations: 21
  • Regional Variability of Lightning Activity in Pakistan: The Role of Atmospheric and Cloud Properties

MOST CITED SCHOLAR PUBLICATIONS

  • Performance analysis of FSO based inter-UAV communication systems
    VR Nallagonda, P Krishnan
    Optical and Quantum Electronics 53 (4), 192 , 2021
    2021.0
    Citations: 21
  • Bit error rate analysis of polarization shift keying based free space optical link over different weather conditions for inter unmanned aerial vehicles communications
    VR Nallagonda, P Krishnan
    Optical and Quantum Electronics 53 (9), 538 , 2021
    2021.0
    Citations: 12
  • Bit error rate analysis of ground-to-high altitude platform free-space optical communications using coded polarization shift keying in various weather conditions
    V Ratnam, P Krishnan
    Optical and Quantum Electronics 54 (1), 27 , 2022
    2022.0
    Citations: 10
  • A miniaturized quad port highly isolated triple band notched UWB-MIMO diversity antenna
    T Sushma, R Gogineni, NV Ratnam, SR Babu, S Mandava, PVK Kanth
    Progress In Electromagnetics Research C 152, 43-53 , 2025
    2025.0
    Citations: 3
  • Performance analysis and enhancement of unmanned aerial vehicle based free space optical communication system
    NV Ratnam
    National Institute of Technology Karnataka, Surathkal , 2022
    2022.0
    Citations: 2
  • Performance analysis of high-altitude platform-underwater wireless optical communication systems with decode-and-forward relaying
    VR Nallagonda, RR Maturi, SSR Manchikalapudi, B Dantuluri, ...
    Optical Engineering 65 (2), 026101-026101 , 2026
    2026.0
  • Swarm UAVS with FSO systems: a performance analysis using differential chaos shift keying modulation
    VR Nallagonda, R Bhukya, D Sridhar, N Siva NagaRaju, R Gogineni
    Optical and Quantum Electronics 57 (11), 1-22 , 2025
    2025.0
  • Regional Variability of Lightning Activity in Pakistan: The Role of Atmospheric and Cloud Properties
    R Gogineni, N Umakanth, NV Ratnam, Y RamaKrishna, K SivaKrishna, ...
    Atmospheric and Oceanic Optics 38 (5), 591-600 , 2025
    2025.0
  • A performance study of an inter-UAV-based free space optical (FSO) system in the maritime environment
    VR Nallagonda, NS Nagaraju, D Bhavani, R Gogineni, S Mudunuru, ...
    Journal of Optical Communications , 2025
    2025.0
  • Regional Variability of Lightning Activity in Pakistan: The Role of Atmospheric and Cloud Properties

Publications

1. Nallagonda, Vijaya Ratnam, and Prabu Krishnan. "Performance analysis of FSO based inter-UAV communication Optical and Quantum Electronics 53.4 (2021): 1-20. :-Published (SCI).
2. Nallagonda, Vijaya Ratnam, and Prabu Krishnan. " Bit error rate analysis of polarization shift keying based free space optical link over different weather conditions for inter unmanned aerial vehicles Optical and Quantum Electronics Doi:10.1007/s11082-021-03188-0: -Published (SCI).
3. Nallagonda, Vijaya Ratnam, and Prabu Krishnan. " BER Analysis of Ground-to-HAP Free-Space Optical Communications Using Coded POLSK in Various Weather Optical and Quantum Electronics: - Published (SCI).
4. Nallagonda, Vijaya Ratnam, and Prabu Krishnan A performance study of an Inter-UAV-based Free Space Optical (FSO) system in the maritime environment. – Published(Scopus)
5. Thotakura Sushma, Rajesh Gogineni, Nallagonda Vijaya Ratnam, Sadineni Ramesh Babu, *, Sunitha Mandava, and Paruchuri V. Krishna Kanth “ A Miniaturized Quad Port Highly Isolated Triple Band Notched UWB-MIMO Diversity Antenna: - Published(Scopus).

6. Nallagonda, V.R., Bhukya, R., Sridhar, D. et al. Swarm UAVS with FSO systems: a performance analysis using differential chaos shift keying modulation. Opt Quant Electron 57, 587 (2025). : - Published (SCI)

7. Rajesh Gogineni, Umakanth, N., Ratnam, N.V. et al. Regional Variability of Lightning Activity in Pakistan: The Role of Atmospheric and Cloud Properties.