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Resume Title: Wireless Design Engineer(L1/L2)

Resume keywords summary:

Contact Information
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Work Experience
Experience level: 2-5 years
Profile/Cover Letter:

• More two years experience in simulation, developments, testing and integration of various Wireless Technologies like IEEE 802.16d/e/m, GPS etc.
• Filed Patent on CDMA ranging on IEEE 802.16e OFDMA Physical Layer and publications in National Level Conference in on Wireless Technologies.
• Integration of video codec, Testing and debugging various issues in Processor level.
• Member of different task groups in Wimax fouram .
• Team Worker with good interpersonal skills and fast learning skills.
Work Experience
• Worked as a Project Trainee from 30-01-2005 to 30-06-2005 at Encore Software Ltd Bangalore (WiMAX PHY Project).
• Worked as Senior Engineer at Jitec Product Engineering and Automation Pvt Ltd Bangalore form 05-07-2005 to 30-03-2006(H.264 Video Codec and GPS Projects).
• Working as Network Design Engineer at Cdot Alcatel Lucent Research Centre Chennai from 20-04-2006 to till date.(WiMAX MAC/PHY Projects)

• ME in Wireless Technologies from Thiagarajar College Of Engineering, Madurai during 2003-2005 with 8.8 CGPA (Out of 10)
• Bachelor Degree in Electronics and Communication Engineering from The Institution of Engineers (India) during 1998-2002 with 65.6 percentages.

Patents Filed
• “Dynamic Adaptation of size and frequency for Ranging/Bandwidth requests allocations for IEEE 802.16e OFDMA Physical Layer” filed on Jan 2008 (No:627/DEL/2008).

• “Performance Evaluation Of IEEE 802.16d OFDM Physical Layer Using Simulation” National Level Conference (TIFAC-CORE) at TCE , Madurai, , TN
• “Parametric Localization of Multiple Inherently Distributed Source Using Covariance Fitting Approach” National Level Conferences at AC Tech, Karaikudi, TN.

Skill Sets:

• Languages Known: C, VHDL
• Operating Systems: Windows XP, Linux.
• Tools Known: Matlab 7, Simulink, Xilinx Project Navigator 6.3i, Model Sim 5.7g , Code Composer Studio 3.1 v,ChipScope Pro 6.3i,ANVL
• Assembly languages: 8085, 8086.
• Hardware Skills: Spartan 3 FPGA, Lyrterch Signal Wave, TMS320C6000 DSP.

• Excelled in GATE 2003 Examination.
• Associate of Institution of Engineers (India).

Areas of interest:
• 4G Networks
OFDMA/OFDM Cellular Networks.
CDMA ranging (IEEE 802.16d/e)
• Cross –Layer Approach
Digital Beamforming
MIMO (Space time Block codes & Spatial multiplexing)
• WLAN and GSM
Professional Experience

1. Link level Simulation of IEEE 802.16e OFDMA Physical Layer
IEEE 802.16e (WiMAX) standard is the emerging standard for mobile Metropolitan area networks. In this project implementing the link level downlink simulator contains the various blocks like randomiser/Derandomiser, FEC/viterbi decoder (includes tailbitting), OFDM modulator/demodulator, Data modulator/demodulator (Soft and Hard decisions), Preamble /Pilots generation and modulation, channel modeling (Ped A, Ped B and VehA), channel Estimation (LS and LMS) etc. This model supporting 512/1024 FFT size and permutation scheme as PUSC and AMC.Finally evaluating the performance with different coding rate, different channel estimation schemes and introducing interference plus noise. This model is extendable to include option features like Adaptive Antenna Systems (AAS) and MIMO.
Duration : 7 months (09/2007 to 03/2007)
Team size : 5
Platform : Matlab 7.2

2. Implementation of new test cases, PM counters on MS network entry, mobility, AAS and MIMO features (IEEE 802.16e MAC layer).
To evaluate the performance of BS MAC software as per WiMAX fouram, here we are developing new test specification and test cases on MS network entry, mobility, negotiate basic capabilities, AAS (UL&DL), Advanced MIMO algorithm supports etc. The other important task is to evaluate the performance of various PM counters in the MAC software.
Duration : 12 months (04/2007 to till date)
Team size : 4
Platform : ANVL (automated network validation tool, developed by Intel )
Language : C++

3. Dynamic Adaptation of Size and frequency of Ranging /Bandwidth request allocations (IEEE 802.16e MAC layer)
In current MAC version of WiMAX; the size and frequency of Ranging/Bandwidth allocations are fixed. Here implementing a new algorithm based on CDMA technology for dynamic adaptation of size and frequency. The algorithm is based on measurements of the amount of ranging trials, based on the measurements of amount of bandwidth request, based on the amount of active connections etc.
Duration : 3 months (06/2006 to 08/2006)
Team size : 2
Platform : Ransim (Developed by Stuttgart University, Germany for network MAC simulation)
Language : C++

4. Simulations of Downlink Beamformer for IEEE 802.16e Standard
Adaptive antenna systems (AAS) are an optional feature in IEEE 802.16e standard to increase capacity, coverage and signal quality. AAS equipped base stations can create beams that can steered, focusing the transmit energy to achieve greater range. When receiving, they can focus in the particular direction of the receiver. This helps eliminate unwanted interference from other locations. In this project analysis of new method based on the combination of spatial covariance matrix transformation and adaptive beamforming techniques. The beamformer is based on Principle component beamformer and Maximal ratio combing beamformer.
Duration : 2 months (04/2006 to 05/2006)
Team size: 2
Platform : Matlab 7.2

5. Design and Implementation of Peudolite Transceiver
Pseudolite transceiver is a ground based GPS (Global position System) transceiver using for position, velocity and time estimation .Model based design (MATLAB/SIMULINK) using for design and developing the various blocks like acquisition of signal, tracking (code /carrier phase) and navigation solution. Here two types of spreading codes (P codes and C/A codes) are used for implementing the Direct Sequence Spread Spectrum(DSSS) technology in to model. Spreading the navigation data. Final target implementing Lyrtech signal wave processor.
Duration : 6 months (10/2005 to 03/2006)
Team Size: 4
Platform : Matalab/Simulink, Xilinx/System generator
Target : Lyertech signal wave, Spartan 3 FPGA

6. H.264 Video Encoder
Is a digital video codec standard which is noted for achieving very high data compression. It was written by the ITU-T Video Coding Experts Group (VCEG) together with the ISO/IEC Moving Picture Experts Group (MPEG) as the product of a collective partnership effort known as the Joint Video Team (JVT). In this project developing and implementing the various blocks like integer transform quantization, Entropy encoding (CABAC/CAVLC), Deblocking filter, Motion estimation etc.The prediction supported by both intra and inter prediction.
Duration : 3 months (07/2005 to 09/2005)
Team size : 12
Target : TI C6000 DSP processor ( C language)

PG projects
Project phase 2.
Performance Analysis of IEEE 802.16d OFDM Physical Layer
Fixed Broadband Wireless Access (BWA) is a technology that offer high speed voice, video and data services for the last mile, which presently dominated by the cable and digital subscriber line (DSL) technologies. The biggest advantage BWA has over its wired competitors is it increased capacity and ease of deployment, since the network can be created in just week by deploying a small No: of base stations on buildings or poles to create high capacity wireless access systems. Here studying the IEEE802.16 standard (WiMAX) and mainly on the 802.16d OFDM physical layer. Simulation is done at all the mandatory block consists of Randomization, FEC, Adaptive modulation and IFFT/FFT. Frequency domain Channel Estimation is done at the receiver side.
Place: Encore Software LTD (Bangalore)

Adaptive Antenna Systems (AAS) Implementation on IEEE 802.16d standard
IEEE 802.16 (Wimax) standard is the emerging standard for WMANs. In that standards Adaptive Antenna Systems (AAS) and Space Time Coding are using for improving the performance and coverage. Here study and modification of the messages of the MAC layer (subscriber side) while implementing the Adaptive Antenna Systems.
Place: Encore Software LTD (Bangalore)

Project Phase 1.
Parametric Localization of Multiple Incoherently Distributed Sources using covariance fitting approach
Here a new algorithm for parametric localization of multiple incoherently distributed sources is simulated using MATLAB 6.5. This algorithm is based on an approximation of the array covariance matrix using central and non-central moments of the source angular power densities. Based on this approximation, a new computationally simple covariance fitting-based technique is proposed to estimate these moments. The source parameters are then obtained from these moment estimates. This algorithm can be used in Global Positioning System (GPS) for accurate position estimation.

Mini Projects
• Single Chip CMOS RF Transceiver for WLAN Applications.
• BER simulation - Soft demodulation (Log Likelihood Ratio) 16 QAM,64 QAM
• Wireless channels - Rayleigh Flat Fading , Frequency Selective Fading
• Diversity Schemes- Alamouti Scheme, Maximal Ratio Combining (MRC)
• Channel Encoders - Reed Solomon Encoder, Block Interleaver and Convolutional Encoders and viterbi decoder with tailbitting.

Lectures Delivered

Venu: Cdot Alcatel Lucent Research Centre Chennai
• Adaptive Antenna Systems for IEEE 802.16 e standards
• Space Time coding
• CDMA Based Ranging for IEEE 802.16 e OFDMA Physical Layer
• Beamforming Support for IEEE 802.16 e MAC Layer
• Advanced MIMO algorithms Support for IEEE 802.16 e MAC Layer

Employer: Cdot Alcatel-Lucent Reserch centre
Job Title: WiMAX MAC/PHY
Start Month/Year: 04/2006
End Month/Year: 04/2008
City: Not Specified
Country: India
Description: Applied for Patents on "Dynamic adaptaton of Size and frequency of Ranging/Bandwidth allocatons for IEEE 802.16e Phy Layer(N0:627/DEL/2008)

Education & Training
Education Level: Master's Degree
School Name: Anna University
Major: Wireless Technologies
City: Not Specified
Country: India
Graduation Date: 07/01/2005
Description: Not Specified

Language Level
English Fluent

Job Preferences
Job Category: WiMAX Technologies
Job Type: Full-Time Employee
Job Status: Immediate
Desired Salary: $0 per year
Desired Location: Not Specified
Willing to Relocate: Yes

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