Engineer Design

PATHIK D. TRIPATHI

Email: **************@*****.*** Cell # 781-***-****

Summary:

• 1.5 year of hands-on industrial experience in RF Engineering backed up with academic qualification

• One year of work experience in the Networking industry with knowledge from Universities

• Have educational background in Communication – Modulation, Coding, Channel Modeling and Receiver Design

• Demonstrate ability to acquire technical & domain knowledge & skills rapidly with self-learning attitude

• Capable of working not only as a team player but also as a self-starter with excellent communication skills

Core Competencies:

• LAN Protocols • LTE • Analog/Digital Circuit Design • Observant

• Modem Design • WCDMA • Radio Frequency Design • Perform under pressure

Education:

MS in Electrical Engineering with specialization in Wireless Communication

New York University

BS in Electronics & Communication Engineering

Sardar Patel University

Professional Experience:

RF Engineer at NextG Networks : (Aug. 2011)

- Have industrial experience in outdoor DAS systems run by optical fibers for WCDMA & LTE Systems

- Carried out surveys of the areas for new nodes based on footprint of RF coverage in Mapinfo for AT&T, NY

- Installed and troubleshoot links between BTS/LTE equipment and Andrew or BTI OTRx and ion (RU)

- Done Link Budget of nodes for DL and UL both to have them operative in MetroPcs, Boston Market

- Changed Simulcast Ratio of existed nodes & made sure them on- air in network through 911 & other tests

- Documented trackers of commissioned nodes and prepared presentations for carriers through MS Office

RF Test Engineer (drive-tester for Ericsson) : (Sep. 2010 – July 2011)

- Conducted SSV and cluster testing for many Base Stations for different carriers’ UMTS and GSM systems

- Evaluated QCP for throughput and handovers with 3 separate UEs for AT&T UMTS in Connecticut & Tulsa

- Done pre launched shake down testing of 480 eNODEB for MetroPcs 4G project in Miami

- Had cluster drives with scanner and performed Retainbility Test for many LTE systems

- Used to do cluster drives for Accessibility Test with help of TEMS 10 and Microsoft Streets and Maps

- Performed several pre-defined tests for outdoor DAS antennas in LTE system

Network Engineer in India: (June 2007 – June 2008)

- Supported Sr. Engineers in conducting day-to-day hardware and network configurations

- Supported and troubleshoot workstations, print servers, Internet, mail and various software applications

- Monitored the performance of network systems by troubleshooting and resolving network problems

- Provided support and maintenance for inter office network (LAN)

- Evaluated inter-department’s requirements and suggested best software and hardware

- Responsible for upgrading existing hardware that were out-dated

- Fixed the non-working exhibits with help of German Engineers of Max Plank Society

Educational Experience:

Graduate Assistant: ( Jan 2009 – Dec 2009 )

- Designed and developed variable PN (Pseudorandom Noise) generator that has code length from 3 to 255

- Implemented and verified the circuit on board

- Tested the circuit for labs of one subject – EL 5023 Wireless Information Systems Laboratory

- Developed model of Narrowband Channel and Receiver with assumed environmental conditions

- Implemented and verified the code in MATLAB

- Checked the variation by adding number of readings and pre-assumed conditions

- Designed and developed Broadband Channel with same conditions and parameter

Educational Projects:

Dual Tone Multi-Frequency Encoder and decoder using PC Keyboard

Platform: DSK TMS320C6713 by Texas Instruments

- Implemented the mechanism to detect dialed number in Telephone Service

- Designed and developed C code for transmitter (encoder) and receiver (decoder)

- Tested the code by implementing on the board and verified output by comparing input

Grain Cipher implemented on FPGA board

Platform: Xilinx XC3S200 Spartan-3 Starter Kit

- Designed and developed complete VHDL source code and Test bench code

- Tested the code by Functional Simulation and Timing Simulation in ModelSim and Xilinx

- Downloaded the code on the board and verified it

- Prepared the User Manual and report on usefulness in GSM and CDMA technology

Calculate BER for various modulation schemes

Tools: RF signal generator, Spectrum analyzer, Digital storage oscilloscope, RMS voltmeter, Duplexers

- Designed and developed complete circuit with help of tools, PN code generator, mixers, splitters, combiners

- Calculated BER by bit error rate counters and Matched Filter with no noise for BPSK

- Verified the same BER by using formulas and readings from RMS voltmeter

- Made comparison of BER with different values of noise figures

- Repeated the experiment for various modulation schemes i.e. QPSK, 8 - PSK

Technical Skills:

• Operating Systems: DOS, Windows 98, Windows XP, Windows Vista, Mac OS X, Linux

• Programming Languages: C, C++, VHDL

• Software: Ms Office, Matlab, Xilinx, ModelSim, Circuit Maker, Wireshark, TEMS 9/10/11, NEMO, Mapinfo

Certification:

• Cisco Certified Network Associate – CCNA

• Certification in Wireless Communication from NYU certified by NYS

• Merit based scholarship award from NYU for whole course

Coursework:

Wireless Communication: Channel Modeling and Receiver Design, Modulation and Coding

Topics: , Propagation Modeling, Link budget, Communication channel models, FDD and TDD, Techniques for mitigating transmission impairments, Channel modeling parameters, Multipath spread parameters, Matrix Channel Modeling for MIMO, Channel Parameter Estimation, Mitigation of path loss and fading

Wireless Information Systems Laboratory

Topics: Spread Spectrum CDMA, Pseudo-Noise code generation, Transmitters and receivers for direct sequence and frequency hopping systems, UHF channel propagation characteristics including multipath time delay profiles and attenuation measurements, Phase locked loops

Digital Signal Processing

Topics: Real-time digital signal processing, DSP microprocessor, Implementation of common algorithms used in Communication, Tools and functions important for the design of DSP-based systems, Properties and applications of the discrete Fourier transform and FFT, Properties and design of linear-phase FIR digital filters

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