Dr.  Abhishek Roy

Based in San Francisco, United States
Abhishek Roy


E-mail: abhishekroy.1977@gmail.com, abhishek.roy@samsung.com
Phone#: (+82) 10-9530-7028
URL: http://www.abhishekroy.info/
• A Principal Engineer (Director) and lead wireless system architect, with more than 15 years of relevant experience in design, analysis, modeling and dimensioning of 4G/5G wireless networks, IoT and Cloud RAN spanning across different countries. 
• Directing and leading big, talented teams for several, global wireless network projects, involving hundreds of millions of dollar revenues. 
• Co-worked with multiple Vice Presidents (different domains), different teams (sales, marketing, software) and even CTOs for key wireless projects
• Co-author of many publications in various aspects of mobile wireless networking, like:
     o An International book (published by Taylor and Francis, USA) and two International book chapters, 
     o 8 International scientific Intellectual Property (patents), 
     o 60 top-notch International journals and magazines (IEEE, Elsevier, Wiley, Springer) and many International conferences
     o  Almost 1,600 citations (in Google-Scholar)
• Served as technical program committee members and track chairs of International wireless conferences, Special Issue journal editorial boards and PhD thesis committees.
• Winner or Best Employee, Best Masters and Best Paper awards from company, University and International Conferences. 
Professional Experience 
(A) Principal Engineer – System Design Lab, Networks Division, Samsung Electronics, Korea, Working since Dec 2006 – Present
1. Leading the Key Performance Index (KPI) Design in 4G/5G networks
2. Leading the Performance Modeling and Simulation of 4G/5G systems
3. Leader of Samsung’s Wireless Network Dimensioning
4. Key Member of Samsung’s 5G Virtual RAN (V-RAN) Design
5. Design and Performance Analysis of Advanced Wireless Network Features: 
6. Video Streaming QoE Analysis over 4G/5G Wireless
7. LTE Network Performance Analysis for Public Safety Networks
8. Design and Analysis of VoLTE Capacity in LTE Systems
(B) Senior Engineer – Wireless Team, Conexant Systems India Inc, June 2005 – Nov. 2006
1. MAC Layer Protocol Development for IEEE 802.11n
2. New Algorithm Design for Rate-Control in IEEE 802.11n
3. MAC Layer Protocol Development and Testing for WiFi SimpleConfig
4. Guiding Research Projects jointly with IIT-Delhi
(C) Systems Engineer – Wireless Packet Engineering, NORTEL Networks, USA, May 2004 – May. 2005
1. VoIP in 2.5G and 3G Wireless Systems
2. GPRS and 3G Performance Analysis
(D) Research Scholar, Center for R&D in Wireless Networks, USA: Jan 2003 - May 2004
1. Optimal Location Management for All-IP (4G) Wireless Systems (Jointly with IBM TJ Watson Research, USA)
2. Optimal tradeoff between Location Update and Paging (Jointly with IBM T.J. Watson Research, USA): 
3. Location-Oriented Multimedia in Smart Environments

Available Lectures

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  • 3GPP Machine Type Communications (MTC)  An Overview
    The Third Generation Partnership Project (3GPP) has been working on developing specifications on Machine Type Communications (MTC), also known as Machine to Machine Communications (M2M). This is...
  • An in-depth Study on Smart Grids with special significance on South Korea
    Smart Grid is an inevitable trend of power grid, and smart grid comprehensive assessment system can conduct a comprehensive assessment of the overall characteristics of smart grid, which can...
  • D2D Communications: Technology and Prospect
    Next generation 5G networks contemplate to exploit millimeter Wave (mmWave) for a massive increase in data rates but its inherent characteristic of line-of-sight (LoS) brings up the challenge of...
    In this lecture, we will talk about the challenges of autonomous cell outage detection (COD) in Self-Organizing Networks (SON). COD is a pre-requisite to trigger fully automated self-healing...
  • Demand Response in Smart Grid
    Smart grids are conceived of as electric power grids, capable of delivering electricity in a controlled,smart way from energy generator to active consumers. Demand response (DR), by promoting the...
  • Greening of Mobile Networks  Myths and Opportunities
    Next generation 5G wireless networks envision innovative radio technologies for ultra dense deployment with improved coverage and higher data rates. However, the deployment of ultra dense 5G...
  • Mobile Wi-MAX for Broadband Wireless Internet
    Mobile WiMAX is a fast growing broadband access technology that enables low-cost mobile Internet applications, and realizes the convergence of mobile and fixed broadband access in a single air...
  • Modulation and Coding
    In a digital communication system, the source to be transmitted is discrete both in time and amplitude. Digital information carrying signals must be first converted to an analog waveform prior to...
  • Next Generation 5G Wireless Networks
    The vision of next generation 5G wireless communications lies in providing very high data rates (typically of Gbps order), extremely low latency, manifold increase in base station capacity, and...
  • Opportunities and Challenges in Machine-to-Machine Communications
    Machine-to-machine (M2M) communications have emerged as a cutting edge technology for next-generation communications, and are undergoing rapid development and inspiring numerous applications....
  • Regulatory Issues in M2M Communications
    Machine-to-machine (M2M) solutions are rolling out worldwide and across all industries - possibly being a key enabler of applications and services covering a broad range of vertical markets (e.g.,...
  • Resource Allocation in Cellular Network and HetNets
    Heterogeneous wireless networks with small-cell deployments in licensed and unlicensed spectrum bands are a promising approach for expanding wireless connectivity and service. As a result,...
  • Traffic-Driven Power Saving in Operational 3G Cellular Networks
    Base stations (BSes) in the 3G cellular networks are not energy proportional with respect to their carried traffic load. Our mea- surements show that 3G traffic exhibits high fluctuations both in...
  • Tutorial on OMNeT++ (Part-1)
    OMNeT++ (Objective Modular Network Testbed in C++) is a modular, component-based C++ simulation library and framework, primarily for building network simulators. OMNeT++ can be used for free for...
  • Tutorial on OMNeT++ (Part-2)
    OMNeT++ (Objective Modular Network Testbed in C++) is a modular, component-based C++ simulation library and framework, primarily for building network simulators. OMNeT++ can be used for...
    After the World Wide Web in 1990s and the mobile internet in 2000s, we are gradually moving towards one of the potentially most distinct phase of internet revolution--The "Internet of Things...

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