Electrical Engineering

ASHOK K. KARMOKAR

E-mail: abqhxy@r.postjobfree.com abqhxy@r.postjobfree.com

Web: www.ece.uwaterloo.ca/~akkarmok/ www.ece.ubc.ca/~ashokk/

PROFILE

Excellent interpersonal and communication skills

Very professional, cooperative, amiable and modest

Very creative, versatile, vigorous and capable of working under pressure

Highly motivated, focused and passionate about research, design, development and performance

analysis

Extremely quick-learner, self-starter and capable of working either in a team or individually

Secured 1st position in the undergraduate class from the top ranked university in Bangladesh

Recipient of competitive awards in all level of studies

QUALIFICATION HIGHLIGHTS

More than 6 years of research, development and performance analysis experience in different Wireless

Communications Research groups across Canada

Excellent exposure of wireless communications technologies and network protocols due to extensive use

of these technologies and protocols in research and performance analysis

Excellent working skills in C/C++ and MATLAB languages on Linux, Mac and Windows platforms. Sound

working experiences with MAPLE, MATHEMATICA, OPNET, SIMULINK, AMPL, OPL, PSPICE, VHDL

programming and modeling languages

Successfully developed several projects (using software programming and hardware implementation) as

a part of undergraduate and graduate studies

More than 3 years of hands-on experience with electrical, electronic, digital and RF devices, systems

and computer testing tools (e.g., spectrum analyzers, oscilloscope, signal generators, microcontrollers,

software debuggers)

Strong foundation on electrical engineering (wireless, optical, digital and satellite communications

systems and networks, channel coding, signal processing, data communications, very large scale

integration (VLSI ) and digital electronics, radio frequency systems, antenna, digital design and

microprocessors, circuit analysis, etc), engineering mathematics, complex analysis, artificial intelligence

and optimization techniques

More than 4 years of experience in guiding undergraduate student projects and teaching assistant, and

in teaching undergraduate courses

WORK EXPERIENCE

Research Fellow Sep. 2008- present

Communication Systems and Networks Lab.

The University of Waterloo, Waterloo, ON, Canada

Developing multiple wireless networks collaboration, cooperation and resource sharing techniques for

co-existence, interference-mitigation and mutual capacity gain using proportional fair and max-min fair

scheduling over wireless channels considering interference and noise.

Modeled the systems considering interference and noise of wireless links and using large-scale fading

Analyzed performance using MATLAB, C++, CPLEX and MINOS software tools.

Achieved significant capacity gain using our technique than the traditional non-cooperative case.

Postdoctoral Fellow Sep. 2007- Aug. 2008

Information Theory and Systems Lab.

The University of British Columbia, Vancouver, BC, Canada

Developed cross-layer optimization techniques over MIMO wireless links (modeled using Nakagami-m

fading) using OFDM and M-ary quadrature amplitude modulation (M-QAM) techniques for 3GPP LTE

systems.

Reduced transmission power requirement as compared to traditional single-layer adaptation

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techniques by more than 35% using our technique

Analyzed performance using MATLAB and C/C++ languages, and optimization tools

Investigated user scheduling & adaptive packet transmission techniques for Cognitive radio networks

Studied artificial intelligence based wireless sensor scheduling algorithms

Research Assistant Sep. 2002- Aug. 2007

Communications Lab

The University of British Columbia, Vancouver, BC, Canada

Developed adaptive optimal and sub-optimal (reduced complexity) packet transmission algorithms for

wireless networks using dynamic programming and linear programming techniques

Developed cross-layer adaptation technique over frequency-selective wireless links (modeled as

Nakagami-m fading channel) using adaptive modulation and coding (AMC), rate-compatible punctured

convolutional code (RCPC), Equalization and hybrid automatic repeat request (HARQ) techniques for

3GPP LTE systems

Developed techniques can be applied to different point-to-point, mobile and fixed wireless networks,

e.g., UMTS, IEEE 802.11, IEEE 802.16 (WiMAX), etc

Performed extensive computer simulation using Markov decision process modeling and using C/C++,

MATLAB, MAPLE and MATHEMATICA programming tools

Achieved significant power and throughput gain for delay-tolerant traffic. Proposed techniques can

also maintain delay, bit error rate (BER) and packet overflow requirements for specific application.

Published research works in high quality IEEE journals and conferences

Lecturer Jan. 2007- Apr. 2007

Dept. of Electrical and Computer Engineering

The University of British Columbia, Vancouver, BC, Canada

Developed and taught undergrad course, conducted lab, and administered examination

Lecturer Dec. 1998-Aug. 2002

Department of Electrical and Computer Engineering

Bangladesh University of Engineering and Technology

Developed and taught sixteen electrical engineering lecture and laboratory courses for undergraduate

students. Topics include Communication Systems, Microwave Engineering, Modern Control Systems,

Electronics, Electrical Circuits, C++ programming language, Electrical Machineries, Electrical Power

Systems, Measurements, and Instrumentation.

Taught some courses more than once. Conducted labs, exams, marked answer scripts and prepared

grades.

EDUCATION

Ph. D.- Electrical and Computer Engineering Aug. 2007

The University of British Columbia, Vancouver, BC, Canada

Thesis: Cross-layer Resource Scheduling for Wireless Systems over Correlated Fading Channels

Obtained GPA 4.00 on the scale of 4.00. Completed advanced courses on Convex Optimizations, Markov

decision process, Statistical signal processing (detection and estimation), Wireless communications and

networks, Computer communications networks, Queuing theory, Channel Coding, CDMA and OFDMA

Systems, Digital communications, Machine learning, Hidden Markov model.

Master of Science- Electrical and Electronic Engineering May 2002

Bangladesh University of Engineering and Technology, Dhaka, Bangladesh

Thesis: Diffusion Capacitance of an Epitaxial High Barrier Schottky Diode

Completed advanced courses on Digital communications, Digital signal processing, Laser systems, Optical

fiber communications and networks, Advanced engineering mathematics, Compound semiconductor

devices, Integrated circuits and systems, Very large scale integration (VLSI). Modeled and analyzed

performance of diffusion capacitance of a Schottky diode using C/C++ language.

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Bachelor of Science-Electrical and Electronic Engineering (with distinction) Sep. 1998

Bangladesh University of Engineering and Technology, Dhaka, Bangladesh

Thesis: Design and Fabrication of High Frequency Radio Transmitter

Secured 1st position in the class with honors grade point average (GPA). Completed 158 credit-hours

course works on Communications systems, Analog and digital electronics, Digital integrated circuits and

VLSI, Radio-frequency devices and systems, Modern control systems, Electric machineries and power

electronics, Digital design and microprocessors, Circuit analysis, etc. Designed and implemented of 8-bit

computer system, and different controllers using assembly languages in the undergraduate projects.

Extensively used MATLAB and C/C++ programming languages.

AWARDS

Natural Sciences & Engineering Research Council (NSERC) Industrial R&D Fellowship, 2007

University Graduate Fellowship, University of British Columbia, Vancouver, BC, Sep. 2004-Aug. 2007

Ph. D. Tuition Fee Award, University of British Columbia, Vancouver, BC, Sep. 2003-Aug. 2007

Student Travel Grant Award from IEEE Communications Society, USA, 2004, 2005 (received in UBC)

Graduate Student Travel Grant, University of British Columbia, Vancouver, BC, 2004, 2005, 2006

Excellent Recruitment Award, University of Victoria, Victoria, BC, Sep. 2002-Aug. 2003

Werner Von Siemens Excellence Award from Siemens AG, Germany, 2000 ( received in Dhaka)

Dean s List Award, Bangladesh University of Engineering and Technology, Dhaka, Sep. 1993-Sep.

1998

Merit Scholarship, Bangladesh University of Engineering and Technology, Dhaka, Sep. 1993-Sep.

1998

Altaf Hossain Fellowship, Bangladesh University of Engineering and Technology, Dhaka, 1996-1997

Dr. Rashid Memorial Scholarship, Bangladesh University of Engineering and Technology, 1997-1998

Dhaka Board Scholarship, Dhaka, Bangladesh, 1997-1998

PUBLICATIONS

Articles in Referred Journals:

Ashok K. Karmokar and Vijay K. Bhargava, Performance of cross-layer optimal adaptive

transmission techniques over diversity Nakagami-m fading channels, in press, IEEE Transactions on

Communications.

Ashok K. Karmokar, Dejan V. Djonin, and Vijay K. Bhargava, Cross-layer rate and power adaptation

strategies for IR-HARQ systems over fading channels with memory: a SMDP-based approach, IEEE

Transactions on Communications, vol. 56, no. 8, pp. 1352-1365, Aug. 2008.

Dejan V. Djonin, Ashok K. Karmokar, and Vijay K. Bhargava, Joint rate and power adaptation for

type-I hybrid ARQ systems over correlated fading channels under different buffer cost constraints,

IEEE Transactions on Vehicular Technology, vol. 57, pp. 421-435, Jan. 2008.

Ashok K. Karmokar, Dejan V. Djonin, and Vijay K. Bhargava, POMDP-based coding rate adaptation

for type-I hybrid ARQ systems over fading channels with memory, IEEE Transactions on Wireless

Communications, vol. 5, pp. 3512 3523, Dec. 2006.

Ashok K. Karmokar, Dejan V. Djonin, and Vijay K. Bhargava, Optimal and suboptimal packet

scheduling over correlated time varying flat fading channels, IEEE Transactions on Wireless

Communications, vol. 5, pp. 446-457, Feb. 2006.

Daniela N. Djonin, Ashok K. Karmokar, Dejan V. Djonin, and Vijay K. Bhargava, Adaptive rate

transmission in ad hoc wireless networks, IEICE Transactions on Communications, vol. E87-B, pp.

1389-1392, May 2004.

Articles in Conference Proceedings:

Ashok K. Karmokar and Vijay K. Bhargava, Cross-layer design of optimal adaptation technique over

selection-combining diversity Nakagami-m fading channels, in Proc. of IEEE GLOBECOM 2008, Nov.

30 -Dec. 4, 2008, New Orleans, LA, USA.

Ashok K. Karmokar and Vijay K. Bhargava, Adaptive coding and modulation for hybrid ARQ systems

over partially observable Nakagami-m fading channels, in Proc. of IEEE Global Telecommunications

Conference (Globecom 2006), Nov. 27-Dec. 1, 2006, pp. 1-6.

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Ashok K. Karmokar and Vijay K. Bhargava, Optimal packet scheduling using adaptive M-QAM and

orthogonal STBC in MIMO Nakagami-m fading channels, in Proc. of IEEE International Conference

on Communications (ICC 2006), Jun. 11-15, 2006, pp. 5271-5276.

Ashok K. Karmokar, Dejan V. Djonin, and Vijay K. Bhargava, Delay-aware power adaptation for

incremental redundancy hybrid ARQ over fading channels with memory, in Proc. of IEEE ICC 2006,

Jun. 11-15, 2006, pp.4315-4320.

K. Wavegedara, G. Bansal, P. Kaligineedi, M. Khabbazian, A. Karmokar, M. Rashid, H. Mercier, and

V. Bhargava, Wireless Communications: Trends and Challenges, in Proc. of 12th National

Conference on Communications (NCC 2006) (Invited paper), Delhi, India, Jan. 27-29, 2006.

Ashok K. Karmokar and Vijay K. Bhargava, Optimal packet scheduling over correlated Nakagami-m

fading channels with different diversity-combining techniques, in Proc. of IEEE Globecom 2005, Nov.

28-Dec. 02, 2005, pp. 1217-1222.

Ashok K. Karmokar and Vijay K. Bhargava, Coding rate adaptation for hybrid ARQ systems over

time varying fading channels with partially observable state, in Proc. of IEEE ICC 2005, May 16-20,

2005, pp. 2797-2801.

Piplu R. Paul, Ashok K. Karmokar, and Vijay K. Bhargava, Optimal power control for network-centric

and user-centric wireless networks in interference-limited fading channels, in Proc. of IEEE Canadian

Conference on Electrical and Computer Engineering (CCECE 2005), May 1-4, 2005, pp. 51-54.

Ashok K. Karmokar, Dejan V. Djonin, and Vijay K. Bhargava, Delay constrained rate and power

adaptation over correlated fading channels, in Proc. of IEEE Globecom 2004, Nov. 29- Dec. 03, 2004,

pp. 3448-3453.

Dejan V. Djonin, Ashok K. Karmokar, and Vijay K. Bhargava, Optimal and suboptimal scheduling

over time varying flat fading channels, in Proc. of IEEE ICC 2004, Jun. 20-24, 2004, pp. 906-910.

M. M. Shahidul Hassan and Ashok K. Karmokar, Diffusion capacitance of an epitaxial high barrier

schottky diode, in Proc. of IEEE International Conference on Electrical and Computer Engineering

(ICECE 2002), Dec. 2002, pp. 124-127.

CONFERENCE PRESENTATIONS

Adaptive coding and modulation for hybrid ARQ systems over partially observable Nakagami-m fading

channels in IEEE GLOBECOM2006, Nov. 27-Dec. 1, 2006, San Francisco, CA, USA

Optimal packet scheduling over correlated Nakagami-m fading channels with different diversity-

combining techniques in IEEE GLOBECOM 2005, Nov. 28-Dec. 02, 2005, St. Louis, MO, USA

Coding rate adaptation for hybrid ARQ systems over time varying fading channels with partially

observable state in IEEE ICC2005, May 16-20, 2005, Seoul, South Korea

Optimal and suboptimal scheduling over time varying flat fading channels in IEEE ICC2004, Jun. 20-

24, 2004, Paris, France

EXTRACURRICULAR ACTIVITIES

Organizer of IEEE VTC 2002 and IEEE CCECE 2007 Conference in Vancouver, BC

Peer Reviewer of IEEE journals (Transactions on Communications, Transactions on Wireless

Communications, Transactions on Vehicular Technology, etc) and conferences (ICC, GLOBECOM,

WCNC, VTC, etc)

Member of Institute of Electrical and Electronics Engineers (IEEE)

INTERESTS

Reading, Traveling, Photography

CITIZENSHIP

Canada

REFERENCES

Available upon request

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