Resume

Syed Rifat Arefin

Address: ** ***** *****, *** ********, NY-10801

Phone No: 914-***-**** ; Email: ac3u17@r.postjobfree.com

Profile:

Working as a RF engineer looking forward to learn more and elevate career by gaining knowledge & being up to date with the current technologies in the telecom world.

Academic Qualifications

MSc in Electrical Engineering

University of Bridgeport, GPA: 3.78, Graduated May 2017

Concentrating in communication, Key courses: RF communication, Modern wireless communication, Communication, Digital Signal Processing, DSP Lab, Low power VLSI Design, Nanotechnology

Final project: Detecting emotion from speech signals

Description: Comparing feature extraction techniques using Linear predictive analysis (LPC), Linear predictive cepstral coefficients (LPCC), perceptual linear predictive coefficients (PLP), Mel-frequency cepstral coefficients (MFCC), Power spectral analysis (FFT), Mel scale cepstral analysis (MEL), First order derivative (DELTA). And using Support vector machine (SVM) and Hidden Markov Model (HMM) as a classifier. Will be trying to increase accuracy. Using Matlab and Praat for this project.

Other key projects & courses:

RF Communication: *Designed a low-pass maximally flat filter having a pass band of 0 to 3 GHz, and an attenuation of 20dB at 5GHz. The characteristic impedance was 75 Ohms. *Designed a four section band pass filter having a maximally flat group delay response. The bandwidth was 5% with the center frequency of 1.8 GHz. The impedance was 50 Ohms. These filters were designed using ADS tool. As a part of RF design, I have studied to design high performance RF circuits and RF systems.

Digital signal processing: I have done both theory and lab course. So I have designed several kinds of filters and compared their simulation results using MATLAB.

Low power VLSI: Design and simulation of CMOS and Domino full adders. Power Analysis of CMOS and Domino Full Adder. The design and simulation was done using PSPICE and Cadence.

Bioinformatics: The following projects were done using Python * User should be able to assign scores for matching, mismatching, insertion/deletion. A full implementation of LCS backtracking, walk from the last cell value should be implemented. After user give two input strings the program prints the maximum alignment score. The program produced the LCS results. **Finding HMM using python. In the program a sequence is given that begins in an Exon, 5’ Splice site and an Intron. Sequences will always be generated from these three sites in this particular order, the probability for nucleotides for each state states and for each edge are user inputs. Then program will use Forward or Viterbi Algorithm to find most likely states for the sequence given by the user.

BSc in Electronics & Telecommunication Engineering (BSETE)

North South University, Awarded 2012

Final thesis: Age group recognition from facial images

Description: In the proposed system, facial images are differentiated and characterized using Principal Component Analysis (PCA) and Linear Discriminant Analysis (LDA). And identified using Fuzzy C-Means (FCM).For extracting features we used PCA and LDA and for training the samples we have used FCM. The theory was implemented using MATLAB.

Work Experience:

Current Job Title: RF Engineer (September 2017 – Present)

Company: K&M systems Inc.

Job Responsibilities:

Drive testing and collecting data of the RF network.

Creating small cell network designs and proposals.

Pole Site Selection survey

Designing systems by selecting sites, conducting CW tests, analyzing data, and prepare customer documentation.

Measuring RF measurements IP3, NF, ACPR, S-parameters, VSWR, RxBN, Spectral Emissions

Working with test equipment such as oscilloscope, spectrum analyzer, signal generators, power meters, arbitrary waveform generators, network analyzer, etc.

Configure, test, and commission small cell networks.

Optimize small cell networks.

Conduct field work and measurements.

Operate test equipment and run post processing software.

RF and fiber testing, reporting, and troubleshooting.

Coordinate, oversee or perform system optimization of multi-node outdoor SCN systems.

ATP testing and commissioning new DAS site

RF design of an Outdoor DAS system and Macro 3G/4G system

Predication plots for each technology and frequency (RF signal strength/KPI respective/overlap of adjacent sectors), minimize interference between sectors

Measuring, troubleshooting PIM (Passive Inter Modulation)

Create RF design document and Pre/Post processing RF test results

Work with clients to complete project charter outlining scope, goals and deliverable

Create and execute RF design/testing plans and revise as appropriate to meet changing needs and requirements

Associate RF Engineer (August 2017 – September)

Company: Software Quality Leaders Inc.

Job Responsibilities:

Testing the stability of the modem on different Qualcomm mobile targets for the next generation of Qualcomm Snapdragon Processors

Provisioning new builds on different Qualcomm mobile devices using QXDM and QPST software

Testing the new builds and targets on different carriers (ATT, TMO, VZW and Sprint) by provisioning VoLTE, HVolte, SRLTE

Drive testing the devices with latest builds for different carriers (ATT, TMO, VZW and Sprint) and then observing the test results and monitoring the devices for crashes

Collecting the crash dumps on the targets using Crash Dumper Tool and then reporting to the Debug Team for optimization and stability of the modem

Collecting the carriers KPI’s on a daily basis and generating the daily Pivot Reports & observing the performance of builds

Generating the CSV reports and reporting the drive test results in the CSV format at the End of the day.

Title: RF Engineer (April 2011 – November2014)

Company: ONS Telecom (Bangladesh) Ltd.

Summary of Professional Experience:

Hands-on Experience in different tools – Business Object, ACTIX, TEMS Investigation, MapInfo, Path loss, Pilot Pioneer, Genex, DataPro, Asset, Spectrum analyzer, Pilot scanners STP, ISDN, LNA, Atoll.

RF Survey & Survey Reporting.

Drive Test in city & rural cluster.

KPI Analysis & Optimization.

2G & 3G swap.

3G SSV & Cluster Drive Test

Frequency Planning & RF designing.

Walk test survey & Installing Pico antenna,

Installing GSM antenna & commissioning GSM site

Hands on experience on RFID equipment, RF circuit analysis.

Assigned Projects:

1.Robi Drive Test Service (Manage by ONS )

Responsibilities:

New site and DCS sites Single site verification (SSV).

Identification of faults and issues during the drive test e.g. Handover failures, Call drops, Poor Quality and low Rx level, missing neighbors, overshoots etc.

Analysis of Drive Test files for taking care of External and Internal Interference in the Network, which involves analysis of Rx quality, Rx Level etc, re-planning of RF parameters in problematic areas accordingly. Co-channel (C/I) and Adjacent channel (C/A) Interference analysis.

Perform walk test at the customer complain location and analyze drive test log and generate reports with recommendations for regarding poor signal strengths, poor quality, call blocking, one-way communication (silent call).

Preparing SSV and CMS report using TEMS Investigation 8.1.3 and Map info 10.5.

2.Huawei-Citycell (CDMA & EVDO) Project

Responsibilities:

Performing the role of DT-Coordinator & Reporting Engineer for Huawei - Citycell (CDMA-1X, EVDO-Rev) NPM project.

Prepare report for throughput, DRC Rate, Rx Power, Tx power, PER Average by using Pilot Panarama v6.3.2.1, Pilot Pioneer v4.2.0.1 &Actix.

Have done Drive Test for CDMA-1X Voice, Data & EVDO Network.

3.RF & LOS Survey in Ericsson Project

Responsibilities:

Site survey / RF survey / LOS Survey.

Secure candidate for new site.

To propose Microwave antenna position and angle.

To measure bearing angle of MW links (uplink & downlink).

To take nearby Environment and LOS bearing Information & photographs.

To take existing co-shareable site information & picture.

LOS obstacle detection & information collection.

Secure the Microwave link. RF/LOS reporting.

GPS navigation/ Routing, etc

Technical Skills:

Simulation Software: Xilinx ISE, Aexio Xeus, Pathloss, Microwind, PSPICE, ADS, Labview, Praat, MATLAB.

Theoretical and practical knowledge in: CDMA2000, 1xEV-DO, WCDMA, GSM/GPRS, LTE, RF Circuits and Hardware Design, HSDPA/ HSUPA/HSPA+, 802.11a/b/g/n/ac/ad – WiGig standards

Programming Languages: C, Python, VHDL etc.

Drawing Software: AutoCAD, Macromedia Flash, Adobe Illustrator, Adobe Photoshop.

Development tool: Eclipse, Visual Studio.

Hardware tools: Microcontroller, Spectrum analyzer, Oscilloscope, Vector Network Analyzers, Waveform generators, Wafer probe testers, Signal generator, power meters, arbitrary waveform generators.

Documentation Tool: Microsoft Word, Excel, PowerPoint.

Experience in Digital Signal Processing (DSP), Oscilloscope, Code Composer Studio, implement RTL code, USB, LPDDR4, MIPI and AXI interface

Basic and advance troubleshooting knowledge on personal computer hardware and latest interfaces.

PLC: Mitsubishi, Allan Bradly.

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