“I worked with Deepak on multiple wireless research projects in industrial communications. He's a pleasure to work with and brings a combination of technical depth and hands-on attitude as well as an awareness of the big picture.”
Publications
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Leveraging Named Data Networking for Industrial Automation: Opportunities and Challenges
IEEE International Conference on Communications Workshops (ICC Workshops)
Information Centric Networking (ICN) has emerged as a promising solution to address the data dissemination and scalability concerns with the traditional TCP/IP Internet architecture. Named Data Networking (NDN) is a prominent ICN architecture that supports in-network caching, easy-to-deploy multicast communication and in-built security mechanisms, thus facilitating efficient, secure and timely delivery of content to the end users. These attributes make NDN a promising solution to meet the…
Information Centric Networking (ICN) has emerged as a promising solution to address the data dissemination and scalability concerns with the traditional TCP/IP Internet architecture. Named Data Networking (NDN) is a prominent ICN architecture that supports in-network caching, easy-to-deploy multicast communication and in-built security mechanisms, thus facilitating efficient, secure and timely delivery of content to the end users. These attributes make NDN a promising solution to meet the requirements of IoT applications. Consequently, NDN based IoT deployments for health care to smart home systems, smart buildings and smart cities are on the rise. Nonetheless, the feasibility of using NDN for building next generation Industrial Automation and Control Systems (IACS) has not been studied. Industrial automation requires an efficient and scalable networking infrastructure that facilitates data sharing to drive operational improvements and develop business intelligence. Ethernet based networking solutions are becoming increasingly popular in IACS to provide seamless integration of industrial networks with the Internet. In this paper, we explore the possibilities to leverage the benefits of NDN to provide an efficient, flexible and scalable networking solution for IACS. We study the impact of making this radical change to industrial networks, highlighting the opportunities and challenges for future research and development in this direction.
Other authorsSee publication -
An SD-WAN Controller for Delay Jitter Minimization in Coded Multi-access Systems
IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS)
For an industrial network that is expected to perform with high reliability and availability, we consider the problem of designing a low-cost approach to continuous monitoring and maintenance of the communication links. A software defined wide area network (SD-WAN) based solution is proposed to adaptively monitor and manage the connectivity links from an end device as per the application requirement. Each such device may have multiple cellular interfaces, and we control the end-to-end delay…
For an industrial network that is expected to perform with high reliability and availability, we consider the problem of designing a low-cost approach to continuous monitoring and maintenance of the communication links. A software defined wide area network (SD-WAN) based solution is proposed to adaptively monitor and manage the connectivity links from an end device as per the application requirement. Each such device may have multiple cellular interfaces, and we control the end-to-end delay jitter variation across the different interfaces via an intelligent traffic splitting scheme. We propose use of interstream coding to achieve target delay jitter and also a high reliability/availability. We use a decoupling approach to adapt the probabilistic traffic split into various interfaces and the extent of inter-stream coding. We provide an end-to-end measurement-based traffic splitting scheme that relies on a Machine Learning algorithm. We use a stochastic approximation-like algorithm (operating at a slower timescale) to obtain the right coding level. The various modules developed are pluggable in a pipeline-manner and work with real interfaces as well as simulators like openairinterface. We validate our analysis, and provide traffic split performance results from our working multi-access system (using cellular dongles, and also over openairinterface).
Other authorsSee publication -
Network-Coded SD-WAN in Multi-Access Systems for Delay Control
IEEE International conference on contemporary Computing and Informatics
An industrial IoT network may involve hundreds of IoT end-devices deployed over large geographical wide areas networks (WAN). These devices are expected to operate over several years and their individual communication interface may be gradually upgraded with multiple communication links in order to fit the changing application and data rate requirement. As industrial networks are expected to perform with high reliability and availability, a continuous monitoring and maintenance of these…
An industrial IoT network may involve hundreds of IoT end-devices deployed over large geographical wide areas networks (WAN). These devices are expected to operate over several years and their individual communication interface may be gradually upgraded with multiple communication links in order to fit the changing application and data rate requirement. As industrial networks are expected to perform with high reliability and availability, a continuous monitoring and maintenance of these communication links is essential. A software defined WAN (SD-WAN) based solution allows to adaptively monitor and manage the connectivity links as per the application requirement. In this paper we design and implement a working SD-WAN based multi-access system for upstream communication between an IoT device and the control center. Each IoT device may have multiple cellular interfaces, and we control the end-to-end delay jitter variation across the different interfaces via an intelligent traffic splitting scheme.We provide an analysis of end-to-end delay jitter under LTEs uplink connection and use the structural results so obtained to design a traffic split mechanism. We validate our analysis, and provide traffic split performance results from our working multi-access system
Other authorsSee publication -
Design Considerations for Packet Re-transmission in LoRaWAN deployments
IEEE International Conference on Communication Systems & Networks (COMSNETS)
The rapid growth in Internet of Things (IoT) applications has seen an immense demand for long-range low-power wide area networks (LPWAN). LoRaWAN is one among the prominent LPWAN deployments that has been designed to support communication at a very low bit rate for battery operated devices. In this paper we study the different packet retransmission schemes that can be considered in LoRaWAN deployments. We present their analytical model and investigate the impact of these schemes with respect to…
The rapid growth in Internet of Things (IoT) applications has seen an immense demand for long-range low-power wide area networks (LPWAN). LoRaWAN is one among the prominent LPWAN deployments that has been designed to support communication at a very low bit rate for battery operated devices. In this paper we study the different packet retransmission schemes that can be considered in LoRaWAN deployments. We present their analytical model and investigate the impact of these schemes with respect to the various performance factors of the network. Specifically, we evaluate the trade-off between the performance factors such as the collision probability and packet loss probability with respect to the selected retransmission schemes. We also study the effect of coverage with respect to the network density for a given re-transmission scheme. We conclude the paper with recommendation of selected retransmission schemes based on various performance factors.
Other authorsSee publication -
Fuzzy based MAC Adaptation in Industrial IoT based Sensor Networks
2018 International Conference on Advances in Computing, Communications and Informatics (ICACCI)
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Intent-based Networks: An Industrial Perspective
Proceedings of the 1st International Workshop on Future Industrial Communication Networks
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An IoT infrastructure solution for factories
22nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA)
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Bluetooth IoT infrastructure network with immersive experience
9th International Conference on Communication Systems and Networks (COMSNETS)
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Suitability of WiFi based communication devices in low power industrial applications
2017 IEEE International Conference on Industrial Technology (ICIT)
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Range performance evaluation of IEEE 802.11n devices
2015 IEEE International Conference on Industrial Technology (ICIT)
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Blind multiband spectrum signals reconstruction algorithms comparison
19th European Signal Processing Conference
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Wireless requirements and challenges in Industry 4.0
2014 International Conference on Contemporary Computing and Informatics (IC3I)
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Performance characterization of wireless devices in controlled environments
2014 IEEE International Conference on Smart Instrumentation, Measurement and Applications (ICSIMA)
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Energy efficient wireless infrastructure solution for open pit mine
IEEE International Conference on Advances in Computing, Communications and Informatics (ICACCI), 2013
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Performance evaluation of Field Device Integration (FDI) framework
IEEE International Conference on Control, Automation and Information Sciences (ICCAIS)
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Communication architecture for Remote Monitoring and Diagnostics in Open Pit Mine
IEEE 18th Conference on Emerging Technologies & Factory Automation (ETFA)
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Performance comparison of reconstruction algorithms in discrete blind multi-coset sampling
IEEE International Symposium on Signal Processing and Information Technology (ISSPIT)
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Cognitive Radio Systems Evaluation: Measurement, Modeling, and Emulation Approach
IEEE Vehicular Technology Magazine
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Multi-user MIMO and Carrier Aggregation in 4G systems: The SAMURAI approach
IEEE Wireless Communications and Networking Conference Workshops (WCNCW)
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Blind multiband spectrum signals reconstruction algorithms comparison
European Signal Processing Conference
This paper investigates sparse sampling techniques applied to downsampling and interference detection for multiband radio frequency (RF) signals. To reconstruct a signal from sparse samples is a compressive sensing problem. This paper compares three different reconstruction algorithms: 1) ℓ 1 minimization; 2) greedy pursuit; and 3) MUltiple SIgnal Classification (MUSIC). We compare the performance of these algorithms and investigate the robustness to noise effects. Characteristics and…
This paper investigates sparse sampling techniques applied to downsampling and interference detection for multiband radio frequency (RF) signals. To reconstruct a signal from sparse samples is a compressive sensing problem. This paper compares three different reconstruction algorithms: 1) ℓ 1 minimization; 2) greedy pursuit; and 3) MUltiple SIgnal Classification (MUSIC). We compare the performance of these algorithms and investigate the robustness to noise effects. Characteristics and limitations of each algorithm are discussed
Other authorsSee publication -
Decoupled compensation of IQ imbalance in MIMO OFDM systems
Signal Processing
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MU-MIMO in LTE Systems
Journal on Wireless Communications and Networking
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MIMO OFDM systems with digital RF impairment compensation
Elsevier Signal Processing
Multi-input multi-output (MIMO) systems are often realized with low cost front-end architectures, e.g. the so-called direct conversion (or zero IF) architectures. However, such systems are very sensitive to imperfections in the analog front-end resulting in radio frequency (RF) impairments such as in-phase/quadrature-phase (IQ) imbalance and carrier frequency offset (CFO). These RF impairments can result in a severe performance degradation. In this paper we propose RF impairment compensation…
Multi-input multi-output (MIMO) systems are often realized with low cost front-end architectures, e.g. the so-called direct conversion (or zero IF) architectures. However, such systems are very sensitive to imperfections in the analog front-end resulting in radio frequency (RF) impairments such as in-phase/quadrature-phase (IQ) imbalance and carrier frequency offset (CFO). These RF impairments can result in a severe performance degradation. In this paper we propose RF impairment compensation techniques for orthogonal frequency division multiplexing (OFDM) based MIMO systems. We consider a digital compensation scheme for joint transmitter/receiver frequency selective IQ imbalance, CFO and channel distortion. We also show that in the case where there is no transmitter IQ imbalance, the receiver IQ imbalance compensation can be de-coupled from the channel equalization resulting in a compensation in two stages. The two-stage scheme results in an overall lower computational requirement. The various compensation schemes are demonstrated to provide a performance close to the ideal case without RF impairments.
Other authorsSee publication -
STBC MIMO OFDM Systems with Implementation Impairments
IEEE 68th Vehicular Technology Conference
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Joint Adaptive Compensation of Transmitter and Receiver IQ Imbalance Under Carrier Frequency Offset in OFDM-Based Systems
IEEE Transactions on Signal Processing
Patents
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A method and a system for replacing and commissioning of a field device
Issued US 10209695
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System and method for advising wireless computer networks on inter-network interferences
Issued US 9992777
The present invention provides a system and method for advising wireless computer networks on inter-network interferences during their life time. The method of the present invention initially observes initial channel utilization profiles along with corresponding time-slots of dynamic network elements and network characteristics of a first network and stores as historical channel utilization profiles. The initial transmission profiles an interfering second network are also recorded. The…
The present invention provides a system and method for advising wireless computer networks on inter-network interferences during their life time. The method of the present invention initially observes initial channel utilization profiles along with corresponding time-slots of dynamic network elements and network characteristics of a first network and stores as historical channel utilization profiles. The initial transmission profiles an interfering second network are also recorded. The threshold transmission profiles are then recorded as historical transmission profiles. The aggregator determines interference patterns, by comparing historical channel utilization profiles with runtime threshold transmission profiles and advises and pre-warns appropriate network actions to a network manager of the first network on the interference prone zones. The system of the present invention includes a first network with a common multi-network interference observer, to advise on inter-network interferences.
Other inventorsSee patent -
System for heterogeneous communication in remote areas
Filed IN 201741018369
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Radio scene emulator
Issued US 8994735
A system for defining a radio scene to be emulated includes a display device configured to display a graphical user interface having a grid and at least one waveform block, representing at least a portion of a waveform, included in the grid in response to selection of a type of the waveform, at least one specification of the waveform, and a time pattern of the waveform. The grid has a frequency axis and a time axis, and the at least one waveform block extends along the time axis of the grid…
A system for defining a radio scene to be emulated includes a display device configured to display a graphical user interface having a grid and at least one waveform block, representing at least a portion of a waveform, included in the grid in response to selection of a type of the waveform, at least one specification of the waveform, and a time pattern of the waveform. The grid has a frequency axis and a time axis, and the at least one waveform block extends along the time axis of the grid according to the time pattern of the waveform.
Other inventorsSee patent
Projects
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Quality of Service and Mobility driven Cognitive Radio Systems - QoSMOS
The primary objective of QoSMOS is to develop a framework for Cognitive Radio systems and to develop and prove critical technologies using a test-bed.
Other creatorsSee project
Honors & Awards
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IEEE Senior Member
IEEE
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Best Paper Award: "Suitability of WiFi Based Communication Devices in Low Power Industrial Applications"
IEEE International Conference on Industrial Technology (ICIT 2017)
Languages
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English
Native or bilingual proficiency
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Hindi
Native or bilingual proficiency
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Kannada
Native or bilingual proficiency
Organizations
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IEEE PES Bangalore Chapter 10
Executive Committee member
- Present -
IEEE
Senior Member
- Present
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