Rf engineer, rf optimization, cdma ,evdo, umts optimization, handset

Objective

To seek a challenging position in the area of Wireless communications

Profile

Motivated, Graduate Student From San Diego State University (GPA : 3.5) with an valuable experience in Qualcomm, San Diego, CA. Dynamic problem solver, quick learner and accustomed to handling tasks with minimal directions in fast paced environment.

Education

Master of Science, Electrical and Computer Engineering GPA: 3.50

San Diego State University (Graduation Date - Dec 2008)

Skills Summary

Programming Languages: C, C++, Perl, MATLAB, ARM assembly, SQL database

Development Tools: Visual C++, Lab Windows / CVI, QTP 10.x, VBscripts

Operating Systems: Windows CE, UNIX, Brew, Windows Mobile

Processor Technologies: ARM7/9, ARM11

Configuration Management: Clearcase /ClearQuest,

Communications Related: Bluetooth A2DP, CDMA 1x EVDO, GSM, GPRS, WCDMA,LTE and H.264

VOIP, and GPS, RF/air-interface, 1XRTT, Mobile Web

Test Systems /RF Tools: Agilent8960, MAPINFO Professional, CAIT, GPS Viewer, Actix , ClearQuest, QXDM, QPST, Power meter, JTAG, ATE, Spectrum Analyzer, Anritsu, UDAS, and Network Analyzer

MS EXCEL: MS Excel Macros for preparing Cell Files, Automated Charts, Trends etc

Professional Experience

System Test and Verification Intern, Qualcomm Inc, CA. May 2007 – Dec 2008

? Qualcomm BREW, Windows Mobile chipset power optimization :

o Optimized battery life of QC 6k, 7k chipsets until final candidate build for customer release on BREW, Windows Mobile and Linux platform.

o Indentified and isolated RF modem, multimedia, RF air interface, protocol, memory management, clock drivers, voice quality, camera, USB and several other application related issues.

o Effectively managed issues by entering into bug tracking system with detailed and clear analysis, mobile logs and supporting hardware and software documents.

o Application testing on BREW , Windows Mobile handsets for standby (1x EVDO, GSM, UMTS mode), voice call quality, Radio Base station interface, signal strength, Transmit Power, VOIP, Data call, and multimedia audio performance including formats mp3, AAC+, H.264 , Java Applications, camcorder, GPSOne App, Bluetooth A2DP, WLAN and HSDPA, HSUPA.

o Co ordinate with systems test and development engineers to debug and resolve various issues

? Field Tests with Commercial handsets (Microsoft Days Of Use for WM) :

o Created modified test case suite for commercial handsets - MotoQ, Blackberry, Blackberry, Palm, Pocket PC and Apple iphone. Test suite contains special tests for web based applications such as E mail, SyncML, MMI, MMS, Browser tests, Instant Messaging, Key press, OTA voice call performance etc

o Performed ATP walk after the OTA performance. Prepare close-out packages and handset specific ATP reports. Supported Acceptance Test Plans (ATP) with Qualcomm for Windows Mobile handsets.

•RF Optimization Engineer:

o Generate technical reports for different network providers (AT&T, Verizon) for RF sweep evaluation.

o Voice & Data: Test for call quality, CS PS traffic evaluation, 3G packet UL/DL speeds, IRAT handovers, soft handovers using downlink scrambling codes, RSCP for HSDPA, Rel 99 versions.

o Review link budget calculations for various configurations such as RF cable loss, connector loss to obtain desirable transmit power.

? RF ATE (Automation) QA development :

o Develop automated test script with Lab Windows using GPIB interface to emulate network settings on base station simulator (Agilent 8960) using GPIB interface for test environment.

o LabWindows/CVI front end development including NI GPIB interface for instrument control.

o Created automated report generation system implanting MS Excel report generation library.

Nokia Siemens Networks India Pvt Ltd Aug 2005 – Jun 2006

Field Test Engineer, India. (Network planning and optimization)

o Conducted RF Site Survey for the deployment of new GSM Cell Sites.

o Indentified drive routes for the drive teams and create test locations for different scenarios of testing according to client’s requirement.

o Analyzed drive test logs from call sampling tools, scanners for signal strength, interference, coverage lacking, handover decision, and neighbor cell selection.

o Imported data to MapInfo and add layers for clear view of the system by analyzing minute information.

o Perform investigation to eliminate drop calls, handover failures, and cell reselection time.

o Manage specialized of the TEMS Data collection Ericsson Proprietary Tool for collector and processor Data. Expertise collecting GSM voice. On site troubleshooting of weak pilot, coverage holes, neighbor list issues.

Academic Projects:

o Still Image Compression using JPEG algorithm: Development of JPEG Algorithm following standard steps for RGB-YCbCr conversion, Discrete Cosine Transform, Quantization, Huffman Encoding. Achieving compression ratio of 40:1. Studied various effects for different quantization matrix.

o Simulation of 16 QAM Base Band Transmission System: Implementation of matched filter at transmitter and receiver, Observe the Eye Diagram, Constellation Diagram for 16 QAM. Detailed analysis of SNR, noise, bit error rate for various digital modulation schemes.

o Modem Design: Design of complex base band modulator, channel (24 tap echo model), additive noise source and receiver with PLL, FLL and equalizer (20 tap FIR filter controlled with LMS algorithm). (QPSK and OFDM modulation technique).

Activities and Interests:

o Research Assistant for California Highway Patrol (CHP) for RADAR Lab Testing (Jan- May 2007): Calibrated RADAR antennas for their operating frequencies on Oscilloscopes. Perform Transmission Frequency stability test, Power density test, Doppler audio test, RFI test.

o Teaching Assistant for Microwave Engineering (Aug 2006 – Dec 2006): Guided students in testing and design for lab assignments using Network Analyzer, and Spectrum Analyzer. Assignments included study of Microwave devices, two port networks, and evaluation of scattering parameters, Impedance matching and tuning using smith charts, study of waveguides, couplers, noise and RF components.

Course Work : Quality Assurance Testing ( SDLC, QTP ), Network Planning and Optimization, RF Wireless Communication, Wireless and Cellular Systems& technologies, Microwave Devices & Systems (GSM/CDMA, GPS standards and working), High Speed networks, Modem Design, Digital Signal Processing, Multimedia Communications, Digital and analog communication.

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