raj-cv-current
Resume:
Rajagopal S. Iyengar
Email: ******@*****.***, Phone: 518-***-****
Objective
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A challenging position involving research and development in the field of wireless networking
Education
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Doctor of Philosophy (Electrical Engineering May ‘07), Rensselaer Polytechnic Institute (RPI). GPA: 3.8
Thesis: “Analysis of Scheduling Techniques for Multichannel Wireless Networks”
Master of Science (Electrical Engineering, May ‘03), Rensselaer Polytechnic Institute (RPI). G.P.A: 4.0
Thesis: “Scalable and Distributed GPS free Positioning for Sensor Networks”
Bachelor of Electronic Engineering
May ‘01, University of Bombay, V.J. Technological Institute (VJTI), Bombay, India, GPA: 3.8
Work Experience
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Staff Engineer, Systems Engineering, Posdata America R&D Center, Santa Clara, Ca. (May ’07 - present)
- Broad areas of work include system performance evaluation and algorithm development (using a combination of system/link level simulator (SLS/LLS) and analysis) across MAC and PHY layers, standards contributions and IPR generation (IEEE 802.16m and IEEE 802.16e).
Generated a number of internal documents based on simulator development / algorithm analysis, e.g: operation of Adaptive Modulation & Coding Schemes (AMC), Interference avoidance techniques in a multi-cell scenario.
- Currently working on development of LLS and SLS features for Closed Loop MIMO techniques (in progress).
- Filed IPR related to MAC layer operation over a MU-MIMO PHY and Co-operative MIMO for the cell edge (both under review).
- Attended and participated (voting, defending company’s positions related to various technical issues, making presentations and interfacing with other companies representatives) in WiMAX Forum and IEEE 802.16m meetings to channel Posdata's IPR into standards, make contributions and track the impact of decisions made in these bodies on Posdata's product development, and track technology trends as standards evolve.
- Good knowledge of 802.16e spec, 802.16m spec (SRD, SDD, AWD) and WiMAX forum issues (IOPR, MIOT, PCT, RCT, iIOT)
Research Assistant, Networking Laboratory, RPI, Troy, NY. (April ’06 – Jan ‘07)
- Designed and implemented key features of IEEE 802.16 MAC/PHY operation. Example features include
Framing, control overhead, QoS support
- Support for COST 231, Hata Models, fast fading at PHY layer
- Support to track and make receiver decisions based on instantaneous interference in the network.
- Interacted with a number of WiMAX forum members to demonstrate developed features.
Summer Intern, Intel Corporate Technology Group, Hillsboro, OR. (May ‘05-Aug ‘05)
Developed basic building blocks for an 802.16e simulator in OPNET, to support mobile clients.
Features developed facilitated research into soft/hard handoff mechanisms, and sleep/idle mode operation relevant to the IEEE 802.16e draft standard.
Rated an outstanding intern.
Research Assistant, Networking Laboratory, RPI. (Jan ’04 - March ‘06)
Conducted research on a number of topics, which has resulted in refereed publications in well-recognized networking conferences. Some research areas include:
MAC level scheduling and resource allocation for multichannel wireless systems, applicable to IEEE 802.16, and in general to any frame based multi-tone system.
Simulation modules for 802.16e in NS-2.
Publications
Standards Contributions (selected)
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D. Lee, J. Yun, R. Iyengar, J. Lee, “Multi-User MIMO with only precoded pilots and limited feedback for FDD DL”, Contribution to IEEE 802.16m, C80216m-08_379, Macau, China, May ‘08.
R. Iyengar, J. Yun, “MAC Layer Support for Interference Mitigation using Multi-BS MIMO”, Contribution to IEEE 802.16m, C80216m-08_690, Denver, Co, USA, July '08.
J. Li, D. Lee, R. Iyengar, J. Yun, Z. Li, J. Kim, “UL MIMO Structures for 802.16m”, Contribution to IEEE 802.16m, C80216m-08_691, Denver, Co, USA, July '08.
Book Chapters and Journals
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R. Iyengar, K. Kar, B. Sikdar and X. Luo, “Scheduling Algorithms for OFDMA based WiMAX Systems with QoS Constraints” WiMAX: Technologies, Performance Analysis and QoS, Part I: Technologies, CRC Press, 2007.
R. Iyengar, K. Kar, S. Banerjee, “Low Coordination Topologies for Redundancy in Sensor Networks”, accepted for publication at the International Journal of Sensor Networks (IJSNET).
Conferences (selected)
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R. Iyengar, K. Kar, Suman Banerjee, “Low Coordination Topologies for Redundancy in Sensor Networks”, proceedings of the sixth ACM International Symposium on Mobile Ad-Hoc Networking and Computing, MobiHoc 2005, Urbana-Champaign, Illinois.
R. Iyengar, K.Kar, B. Sikdar, “Scheduling Algorithms for PMP operation in IEEE 802.16 Networks”, proceedings of Resource Allocation in Wireless Networks, RAWNET ’06, in conjunction with WiOpt 2006, Boston, Ma.
R. Iyengar, V. Sharma, K. Kar, B. Sikdar, “Analysis of Contention Based Multichannel MAC for Point-to-Multipoint Networks”, short paper accepted at IEEE Symposium on a World of Wireless, Mobile and Multimedia Networks, WoWMoM 2006, Buffalo, NY.
X. Luo, R. Iyengar, K. Kar, “Throughput Optimal Channel Assignment in Multi-Channel Access Point Networks”, accepted at WCNC 2007, in proceedings.
Relevant Courses (selected)
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Wireless Communication, Information Theory, Queuing Theory, Optimization Methods, Graph Theory and Network Flows, Signals, Systems, DSP, Algorithms and Data Structures, Internet Protocols, Network Programming. Some knowledge of embedded system architecture and programming.
Skills
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Standards: IEEE 802.16e, 802.16m, WiMAX Forum TWG.
Programming Languages: C, C++.
Simulators: NS-2, OPNET, Link Level and System Level Simulators (C/C++ and Matlab respectively)
Software Packages: MATLAB, MAPLE.
Citizenship
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Indian Citizen (H-1B Visa)
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