Jyoteesh Malhotra

National Institute of Technology Delhi | NIT Dehli · Department of Electronics & Communication Engineering

Recently, incredible growth in communication technology has given rise to the hot topic, Big Data. Distributed wireless sensor networks (WSNs) are the key provider of Big Data and can generate a significant amount of data. Various technical challenges exist in gathering the real time data. Energy efficient routing algorithms can overcome these chal...

The futuristic trend is towards the merging of cyber world with physical world leading to the development of Internet of Things (IoT) framework. Current research is focused on the scalar data based IoT applications thus leaving the gap between services and benefits of IoT objects and multimedia objects. Multimedia IoT applications require new proto...

The megatrends within the industrial automation and global value chains expedited the adoption of “Industry 4.0 enabled by 5G” to comprehend extremely flexible and smart production systems. The pivotal challenge for the smart manufacturing leveraging on 5G is the seamless vertical handover and connectivity to a suitable network in accordance with t...

Epilepsy, a fatal neurological disorder, has been emerged as a worldwide problem and is one of the major risks to human lives. There exists an urgent need for an efficient technique for early detection of epileptic seizures at its initial stage in order to save the lives of thousands of epileptic patients annually. Now a days, internet of things in...

The COVID-19 outbreak has stimulated the digital transformation of antiquated healthcare system to a smart hospital, enabling the personalised and remote healthcare services. To augment the functionalities of these intelligent healthcare systems, 5G & B5G heterogeneous network has emerged as a robust and reliable solution. But the pivotal challenge...

Photonic radar, a cornerstone in the innovative applications of microwave photonics, emerges as a pivotal technology for future Intelligent Transportation Systems (ITS). Offering enhanced accuracy and reliability, it stands at the forefront of target detection and recognition across varying weather conditions. Recent advancements have concentrated...

Next-generation wireless networks (NGWNs) are moving towards a more advanced and exemplary environment encompassing data-intensive, delay-sensitive and energy-efficient services. To accommodate the stringent requirements of these radical and multifarious services, Next-generation wireless heterogeneous networks (NGWHNs) have been envisioned as an e...

The limited bandwidth of traditional wireless carriers presents a challenge for delivering high-speed broadband services. To address this, radio-over-free space optics (Ro-FSO) emerges as a viable solution, seamlessly integrating wireless and optical systems. This integration is particularly valuable in sensitive environments such as hospitals, whe...

Visible Light Communication (VLC) systems enhanced by red, green and blue (RGB) lasers are at the forefront of indoor technology, offering dynamic lighting, high-speed data transfer, and energy efficiency. This innovative combination not only revolutionizes connectivity and illumination but also ensures privacy and security, making it a game-change...

Future networks are shifting towards more diversified and exemplary applications for societal benefits. To realise the functionalities of these advanced applications and services, Next-generation heterogeneous networks (HetNets) emerged as an exemplary connectivity solution, enabling each user device (UD) to associate with a radio access technology...

The automotive industry is on the verge of embracing autonomous vehicles in the near future. In the pursuit of developing self-driving cars, photonic radars have emerged as a reliable sensor technology. These radars operate based on free space optical channels, but they are vulnerable to various atmospheric challenges. In this research, the objecti...

Detecting and tracking multiple targets in real-time poses a significant challenge for autonomous vehicles (AV’s), especially in urban areas with unfavourable weather conditions. Photonic radars have emerged as a promising technology for addressing this challenge and enabling autonomous vehicles to recognize traffic patterns, navigate, detect lanes...

Smart city enhances the intelligence and sustainability of the city assets through advanced and diversified applications characterised by specific Quality of Service requirements. To realise the stringent requirements of these applications, multi-connectivity (MC) emerged as a potential solution that ensures seamless mobility, high reliability and...

Autonomous vehicles are projected to be the future of the automotive industry. Photonic radars have emerged as one of the most reliable sensors in the development of self-driving automobiles. The effect of different degrading conditions such as atmospheric turbulence and impact material surface in the target recognition by photonic radar is analyze...

The COVID-19 outburst has encouraged the adoption of Internet of Medical Things (IoMT) network to empower the antiquated healthcare system and alleviate the health care costs. To realise the functionalities of the IoMT network, 5G heterogeneous networks emerged as an exemplary connectivity solution as it facilitates diversified service provisioning...

The wireless network is the driving force behind the new world's economy, and its invasion has spread far beyond Earth in an interplanetary network using satellites. Wireless networks' productivity must be urgently improved because they are prone to signal attenuation, slower transfer speeds, complete signal unavailability due to weather, and overc...

Detection and tracing of multiple targets in a real-time scenario, particularly in the urban setup under adverse atmospheric conditions, has become a major challenge for autonomous vehicles (AVs). Photonic radars have emerged as promising candidates for Avs to realize via the recognition of traffic patterns, navigation, lane detection, self-parking...

In the era of technological advances, the health-care sector is going through a ground-breaking transition by shifting the traditional approach of physical examination of patients to remote patient monitoring. For this purpose, various machine learning techniques are employed to analyze the biomedical signals acquired from a patient's body for the...

A high‐capacity free‐space optics‐based terrestrial communication link using spectral‐efficient space division multiplexing and polarization division multiplexing techniques has been proposed in this research work. Orthogonal frequency division multiplexing with the use of coherent detection has been proposed for the transmission of quadrature ampl...

Epilepsy is a psychosocial neurological disorder, which emerges as a major threat to public health. In this age of the internet of things, the smart diagnosis of epilepsy has gained huge research attention with machine learning-based seizure detection in cloud-fog assisted environments. The present paper also proposes a cloud-fog integrated smart n...

Epilepsy, a globally growing chronic nervous disorder, affects the lives of millions of patients annually through the abrupt occurrence of recurrent seizures. It could result in serious injuries or the death of patients in various accidents. Thus, the automatic prediction of epileptic seizures is essential for alerting the patients well before its...

Recent reports from the world health organization emphasize the role of human negligence in road accidents worldwide. This asserts the importance of autonomy in transportation systems. Advanced transport systems need effective detecting systems in terms of cost-effectiveness as well as capability of multi-target detection along with small dimension...

We propose the development of an inter-satellite optical-wireless-communication (IsOWC) link transporting 4-distinct mode division multiplexed (MDM)-orthogonal-frequency division multiplexed (OFDM) signals to realize high-capacity information transmission. The MDM-OFDM-IsOWC transmission is analyzed considering signal-to-noise ratio, total power, r...

Intelligent transportation is becoming integral part of future smart cities where driverless operations may provide hassle free conveyance. Photonic radar technology is one such contender to deliver attractive applications in autonomous vehicle sector. In this paper we have discussed the basic principle of frequency modulated continuous wave photon...

Measurement is an essential part of modern science as well as of engineering, commerce, and daily life. As per recent reports of world health organization (WHO), most accidents occur due to human negligence and hence need of a system which can access the surrounding environment and reflect exact measurement of obstacle is a must to enable fully aut...

Epilepsy is a prevalent neurological disorder, which disturbs the lives of millions of people worldwide owing to the onset of abrupt seizures. The forecasting of seizures could help in protecting their lives by alerts or in clinical operations during epilepsy surgeries. The present paper addresses this problem by proposing a deep learning framework...

Epilepsy is a chronic nervous disorder, which disturbs the normal daily routine of an epileptic patient due to sudden seizure onset. In this era of smart healthcare, automated seizure prediction techniques could assist the patients, their family, and medical personnel to control and manage these seizures. This paper proposes a spectral feature-base...

The investigation of high-speed optical orthogonal-frequency division multiplexed-free space optical system using mode division multiplexing of three spiral phased Hermite Gaussian modes has been discussed in this article. The investigation of the system is reported by considering the effect of beam divergence and weather conditions. Square root mo...

Futuristic transportation systems would be requiring more effective sensing system that are not only cost effective but also more efficient in sensing multiple targets while acquiring minimal area and utilizing low input power. To achieve that, frequency modulated continuous wave (FMCW) based Photonic Radar is proposed. For multiple targets detecti...

Electronic health records contain the patient’s sensitive information. If these data are acquired by a malicious user, it will not only cause the pilferage of the patient’s personal data but also affect the diagnosis and treatment. One of the most challenging tasks in cloud-based healthcare systems is to provide security and privacy to electronic h...

Intelligent transportation is becoming integral part of future smart cities where driverless operations may provide hassle free conveyance. Photonic radar technology is one such contender to deliver attractive applications in autonomous vehicle sector. In this paper we have discussed the basic principle of frequency modulated continuous wave (FMCW)...

Optical Wireless Communications (OWCs) can play vital role in providing communication in healthcare infrastructure’s, where contagious patients are admitted or treated as well as other patients are coming without any side effects as of radio frequency communication. In this paper, we propose high-speed cost-efficient free space optical (FSO) system...

In this work, a 2λ × 2 spatial modes × 10 Gbps (40 Gbps) inter-satellite optical wireless communication (IsOWC) link has been proposed incorporating hybrid wavelength division multiplexing (WDM) and mode division multiplexing (MDM) techniques. The proposed link employs 2 distinct Hermite Gaussian (HG) spatial modes of 2 distinct wavelength channels...

Inter-satellite optical wireless communication (IsOWC) is a developing free-space optical technology used to communicate among satellites in space. At the same time, SAC-OCDMA (spectral amplitude coding optical code division multiple access) is an encouraging research area in the domain of optical communication because of its high bandwidth, speed,...

Mode division multiplexing (MDM) is an emerging multiplexing technique that simultaneously transmits independent channels through a spatial light modulator (SLM). Further, Spectral amplitude coding optical code division multiple access (SAC-OCDMA) is an encouraging invention because it gives an appealing answer for burst and asynchronous environmen...

In recent years, there have been plenty of demands and growth in the autonomous vehicle industry, and thus, challenges of designing highly efficient photonic radars that can detect and range any target with the resolution of a few centimeters have been encountered. The existing radar technology is unable to meet such requirements due to limitations...

Being one of the most prevalent neurological disorders, epilepsy affects the lives of patients through the infrequent occurrence of spontaneous seizures. These seizures can result in serious injuries or unexpected deaths in individuals due to accidents. So, there exists a crucial need for an automatic prediction of epileptic seizures to alert the p...

This paper describes the system performance of mode division multiplexing applications. The mode of amplification involved a ring profile-based multi-mode erbium-doped fiber amplifier with minimum support of 10 vortex spatial modes. The vortex modes are configured and generated by the vortex lens whose input is excited by a spatial laser source. Th...

Inter-satellite links are crucial for covering the entire globe for information transmission. Traditional space communication systems are based on microwave links, which have high deployment and maintenance cost and high latency. Recently, the application of laser-based optical wireless communication links for inter-satellite applications has gaine...

This article reports the development of a high bit rate terrestrial free space optics (FSO) transmission link. Spectral-efficient polarisation division multiplexed-quadrature phase-shift keyed signals are used to transmit high bit rate data. Coherent receiver is proposed to ameliorate the demodulator performance under environmental conditions. Also...

We propose a novel 1 Tbps super-channel terrestrial free-space optics (FSO) link using nine distinct Nyquist-wavelength division multiplexed (WDM) sub-carriers with 14 Gbaud symbol rate. Nine independent 112 Gbps polarisation multiplexed-16-quadrature amplitude modulated data streams are transported over each sub-carrier. Further, the sub-carriers...

Space information transmission links are crucial for covering the entire globe for communication purposes. The traditional microwave frequency-based satellite communication links have high latency and low information transmission rates. In the last few years, inter-satellite optical wireless communication (IsOWC) technology has evolved significantl...

A novel ultra-high capacity free space optics (FSO) link has been developed by incorporating hybrid wavelength divison multiplexing (WDM)-polarization division multiplexing (PDM)-orthogonal frequency division multiplexing (OFDM) techniques with 16-level quadrature amplitude modulation (16-QAM) signals. Coherent detection is employed to enhance the...

The present work discusses the development and simulative investigation of a high-capacity wavelength division multiplexed free space optics (FSO) transmission system. A novel 3-D orthogonal modulation scheme is proposed, which simultaneously capitalizes on different signal properties of an optical laser beam, i.e., intensity, phase, and state of p...

We propose a novel design of orthogonal frequency division multiplexing-mode division multiplexing (OFDM-MDM) based radio over free space optical (RoFSO) transceiver under the dust effect. Two separate 20 Gbps-40 GHz 4-QAM data bearing optical beams are transported over two distinctive Hermite-Gaussian modes; HG00 and HG01, of a single-frequency la...

Emerging trend of ubiquitous data access is driving the demand for effective wireless communication connectivity. In essence to this, wireless local area network (WLAN) technology seems to be a reliable and cost effective access for the next-generation wireless ecosystem. But the pivotal challenge for WLAN in the next generation wireless networks i...

The present work is focused on a high-speed free space optics transmission link deploying hybrid wavelength division multiplexing and mode division multiplexing techniques. Through numerical simulations, we report 4 × 10 Gbps transmission for clear weather over 7 km using Laguerre Gaussian modes at 850 and 850.8 nm. Further, we investigate the impa...

The present paper proposes a smart framework for detection of epileptic seizures using the concepts of IoT technologies, cloud computing and machine learning. This framework processes the acquired scalp EEG signals by Fast Walsh Hadamard transform. Then, the transformed frequency-domain signals are examined using higher-order spectral analysis to e...

Covid-19 has abolished the economic and financial structure of the world. More than 400 million people have lost their full time jobs. We applied polarity and sentiment analysis on the Facebook posts to identify psychological stress and fear in the fraternity of salaried class. The outcome of the sentiment analysis clearly depicts that 69 percent F...

Since last decade, Spectral Amplitude Coding Optical Code Division Multiple Access (SAC-OCDMA) system has become popular since it offers security, unlimited bandwidth and eliminates multiple access interference. On the other hand, Free Space Optics (FSO) provides last-mile access at a high data rate. We have designed a new zero cross-correlation co...

The millimetre (mm) waves from 30 to 300 GHz have evolved as the possible carrier for high speed fifth generation services. But however, limited bandwidth of mm waves is one of the major challenges for broadband service operator. Radio over free space (Ro-FSO) may be possible solution to transport high speed mm waves by integrating the wireless sys...

https://caps.luminad.com:8443/OE-20200375_online.pdf A high-capacity spectral-efficient dual-polarization quadrature phase-shift keying (DP-QPSK)-polarization shift-keying (PolSK) hybrid modulation scheme for terrestrial free-space optics (FSO) transmission link is proposed and investigated. A DP-QPSK signal modulated at 300 Gbps and a PolSK signal...

The ever-increasing demand for wide channel bandwidth, high-speed information, and spectral-efficient communication links with advanced modulation schemes has led to the evolution of the free space optics (FSO) links. This paper proposes an FSO transmission link based on eight-channel wavelength division multiplexing technique integrating spectral-...

Schizophrenia is a fatal mental disorder, which affects millions of people globally by the disturbance in their thinking, feeling and behaviour. In the age of the internet of things assisted with cloud computing and machine learning techniques, the computer-aided diagnosis of schizophrenia is essentially required to provide its patients with an opp...

Inter satellite optical wireless communication (IsOWC) is an emerging transmission technology which is capable of transporting high-speed data between two satellites estranged in outer space and revolving in the same or different orbits. IsOWC links have been considered very crucial for the purpose of providing global coverage for information trans...

Radio-over-Free-Space Optics (RoFSO) is a key technology for providing high-speed communication links in rural areas. In this work, an orthogonal frequency division multiplexing based RoFSO transmission link has been designed by adopting hybrid wavelength division multiplexing (WDM), mode division multiplexing (MDM) and multibeam technique. The pro...

The reliability and efficiency of free space optics (FSO) systems is significantly degraded by attenuation caused by different climate conditions and atmospheric turbulence. In this work, an FSO transmission system with high-speed transmission capability is proposed by deploying orthogonal frequency division multiplexing (OFDM) to mitigate channel...

In the recent years, cloud computing applications and services have witnessed the exponential growth in every sphere of Government, non-government organizations and corporate houses. Security, privacy, compliance, SLA, integrity and availability are the key issues in cloud computing. This research article concentrates on the investigation and analy...

Inter-satellite optical wireless communication (IsOWC) links have been exploited by many researchers as a viable technology to transmit information amongst two or more satellites using optical carrier signals and outer space as the medium of propagation medium. IsOWC links can securely transmit information all over the globe. The present study disc...

Technological advancement in Optical Wireless Communication has led the race to harvest such a novel technique which is capable of providing higher data rates and at the same time lower power consumptions. To provide more cost effective solution and immunity to various losses, the use of mode division multiplexing (MDM) technique is proposed. In th...

The present work reports a novel single‐channel high‐speed inter‐satellite optical wireless communication (IsOWC) transmission link by using a 3‐D spectrum‐efficient orthogonal modulation scheme incorporating hybrid non‐return‐to‐zero‐differential quadrature phase shift keying‐polarization shift keying schemes. Three independent 40 Gbps information...

The present work reports the designing and performance analysis of radio over free space optics transmission link by incorporating hybrid wavelength division multiplexing, mode division multiplexing, and orthogonal frequency division multiplexing techniques. Four independent information signals each carrying 20Gbit/s-40GHz data are transmitted usin...

In this work, we report the development of long-haul high-speed underwater optical wireless communication (UOWC) transmission link by incorporating space division multiplexing (SDM) of distinct Hermite Gaussian (HG) modes for enhanced channel-capacity. Four distinct 20 Gbps non-return to zero encoded information signals are transmitted over distinc...

Internet of Things (IoT) enables the inter-connectivity of different “things” using which wide range of items and devices can communicate with each other and their external environment. 5G technology offers enhanced quality of service with high-data transmission rates, which necessitates the implementation of IoT in 5G architecture. Free space opti...

In this work, we report the modeling and performance investigation of a novel hybrid MDM-OFDM-Multibeam based Radio over Free Space Optics (RoFSO) transmission link. The performance of the proposed link has been compared using single beam and 4-beams transmission under the effect of heavy fog conditions. We have demonstrated simultaneous transmissi...

In this work, we report the designing and simulative analysis of a novel 400 Gbps coherent detection-orthogonal frequency division multiplexing (CO-OFDM) based inter-satellite optical wireless communication (IsOWC) system incorporating polarization division multiplexing (PDM) for enhancing information carrying capacity of the link. The performance...

In this work, we investigate the performance comparison of different modulation schemes viz. non return-to-zero (NRZ), alternate mark inversion (AMI), return-to-zero differential phase shift keying (RZ-DPSK), and non return-to-zero differential phase shift keying (NRZ-DPSK) in a 2 × 40 Gbps–40 GHz Radio over free space optics (RoFSO) transmission l...

This work reports the development of an ultra-high capacity Nyquist-wavelength division multiplexing (WDM) superchannel based free space optics (FSO) transmission link. In the proposed link, 32 independent wavelength channels are multiplexed, each carrying 200 Gbps dual polarization-quadrature phase shift keying (DP-QPSK) data with 60 GHz channel s...

Cloud computing is an important paradigm of information technology that entirely depends upon virtualization technique. Multi-tenancy is one of the most important characteristic and it is applicable in all deployment models. Another significant feature of cloud is its distributed nature which includes jurisdictions of various geographical areas. Du...

Cloud computing is an important paradigm of information technology that entirely depends upon virtualization technique. Multi-tenancy is one of the most important characteristic and it is applicable in all deployment models. Another significant feature of cloud is its distributed nature which includes jurisdictions of various geographical areas. Du...

The shortage of radio frequency spectrum for wireless communication networks has been addressed by using millimeter wave (mm-wave) transmission in optical-wireless and Radio over Free space optics (RoFSO) links. This work reports the performance comparison of 4-level quadrature amplitude modulation (QAM) and phase shift keying (PSK) based orthogona...

In this work, we propose a novel multi‐bit/symbol spectral‐efficient optical orthogonal modulation scheme based on simultaneously modulating differential quadrature phase shift keying (DQPSK)‐polarization shift keying (PolSK) in a 16‐channel wavelength division multiplexing (WDM)‐based inter‐satellite optical wireless communication (IsOWC) system....

This work is focused on the modeling and performance investigation of a 2 × 20 Gbit/s–40 GHz hybrid mode division multiplexing–orthogonal frequency division multiplexing-based radio over free space optics (RoFSO) transmission system under the influence of different weather conditions. The performance of the proposed system has been compared for 4-q...

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In this work, we report modeling and performance investigation of 40Gbit/s-80GHz orthogonal frequency division multiplexing (OFDM) based radio over free space optics (RoFSO) transmission system by incorporating mode division multiplexing (MDM) of two Hermite Gaussian (HG) modes (HG01 and HG03) under strong atmospheric turbulence conditions. Two ind...

In this paper, we report the modeling and simulative investigation of a free space optics (FSO) transmission system using non-return to zero/differential quadrature phase shift keying/polarization shift keying 3-D orthogonal modulation scheme in which three independent 40 Gb/s data streams are transmitted simultaneously using different signal param...

In this paper, we report the modeling and simulative investigation of a mode division multiplexing (MDM)-based Radio over Free space optics (RoFSO) transmission system. Two separate 10 Gbit/s–10 GHz information signals are transported successfully over 30 km link range using distinct Hermite Gaussian (HG) modes. Also, the decomposition of distinct...

Orthogonal frequency division multiplexing (OFDM) based free space optics (FSO) link is a promising technology for future wireless data transmission networks. In this paper, we report designing and performance analysis of hybrid OFDM-FSO link for the transmission of 4 independent channels each having a data rate of 20 Gb/s incorporating Mode divisi...

We report the performance comparison of mode division multiplexing (MDM)-based radio over free space optics (RoFSO) transmission system using different modulation formats viz. alternate mark inversion, nonreturn to zero (NRZ), return to zero-differential phase shift keying (RZ-DPSK), and NRZ-DPSK under varying atmospheric turbulence conditions and...

The wisdom of future wireless communication is clearly highlighted by the Gigabit experience, Low latency and three fold rises in the capacity, compared to the 4th Generation networks. To meet such an ambitious objective of 5th Generation communication System, efficient use of non-contiguous unused spectrum is required. The panacea to this issue li...

The technology of cloud computing has been growing at an enormous speed. It is considered as one of the most prominent area of research in computer engineering and information technology. Cloud computing provides platforms, software, virtual machine, security and analytical services on the basis of pay as per usage policy. Hence, it furnishes econo...

Cloud computing has become extremely popular technology for the allocation of resources dynamically. New technologies, performance measurements and improvements for the extension and expansion of the cloud services are being developed. In this research, the researchers discuss the outcome and analysis of a survey that had been conducted among cloud...

Zero Cross-Correlation (ZCC) code stands out amongst the most helpful codes in Spectral Amplitude Coding-Optical Code Division Multiple Access (SAC-OCDMA) system because of its features like zero cross-correlation and high auto-correlation. However, for long-range communication, as the number of user’s increases, the performance of the system is de...

Internet of things is a technological advancement of wireless sensor networks (WSNs) which are characterised by highly complex, large scale, heterogeneous, dynamically changing and asymmetric networks. Such constraints make routing in WSNs a difficult task. This paper introduces fuzzy link cost estimation-based real time search routing algorithm (f...

Energy efficiency is a major issue in the designing of wireless sensor networks therefore designing the efficient MAC protocol is of paramount importance which intends to make them energy efficient. The proposed MAC protocol called adaptive sleeping multi frames selective data transmission MAC (AMST-MAC) is an energy saving mechanism whose objectiv...

: The Internet of Things expands the wireless paradigm to the edge of the network, which enables to develop a different kind of applications or services. By using IoT the application becomes more reliable, flexible or portable. It has a large amount of nodes on the various geographic positions, to increase the awareness of location or reduce the la...