++Objective:

Looking for a challenging career opportunity in the wireless communication industry.

Summary:

Worked with modem system testing (MST) team to verify modem system performance at Qualcomm.

Hands on Experience as well as sound understanding on testing and Optimization of LTE(4G), W-CDMA(3G) and GSM(2G), WCDMA Rel 99, HSDPA, HSUPA, HSPA/HSPA+, LTE and LTE-A networks, KPI reports, handover mobility optimization, Layer Management,call flows, OSS, drive testing.

Experienced in collecting QXDM log file, analyzing KPI and making field report.

Experienced in creating voice and data setup for short call, long call and packet call.

Experienced in installing,troubleshooting drive testing hardware and software

Excellent problem solving, troubleshooting, communication and presentation skills

Working knowledge on tools such: QXDM, Wind Catcher, NetAct, TEMS Investigation and Actix.

Working knowledge on vendor platform such as: NSN and Ericsson

Professional Experience:

Engineer, Modem System Test

Company: Qualcomm Jun 2015 –Dec 2015

Location: Seattle, WA

Successfully executing functional, regression & feature test cases for the technologies like LTE, HSPA+, HSUPA, HSDPA, WCDMA and GSM on MSM 8992, MSM 8909, MSM 8994, MSM 8952, MSM 8996, MDM 9X25, MDM 9x35 and MDM 9x45 modem chipsets.

Executing functional and regression field & lab test cases to test new software versions of modem chipsets mainly for end to end LTE systems including UE, eNodeB and EPC. Also involving in performance analysis of audio, video and signaling for iPhone & android based devices.

Understanding of end to end system flows and protocols in LTE technology and performing Certification, Inter-Operability Testing (IOT) of LTE eNodeB with LTE Core Networks (from different vendors) to verify compliance to 3gpp standards.

Supported GSM, UMTS and LTE testing for various targets like Apple iPhone, HTC, Samsung and Blackberry

Analyzed MO, MT, MRAB and IRAT, CPC feature testing performance on AT&T and TMO network

Performed voice and data setup for short call, long call and packet call using QXDM and DATUM.

Reviewed driving reports, super parse and post processed the log files.

Debugged issues such as Radio Link Failure, Max Reset, Idle Cell Reselection failure, Throughput delta and various unexpected KPIs using APEX, HW/SW issues of UE/handset.

Analyzing KPI’s for call drops, radio link failures, setup failures, cell reselection/handover failure, High BLER, Low Throughput and RBs applying knowledge of UMTS/LTE stack: NAS, RRC, RLC, MAC layers

Utilized layer 3 analysis to ensure root cause of the drops was identified properly.

Performed testes on CSFB, IRAT, IFHO, MPLMN and band selection.

Tested various data performance test cases like TCP, UDP in the LAB using IPERF. Run Link Budgets on different bands using Spirent Network Emulator. Data collection for CA Devices.

Experience in multi-SIM testing: DSDA, SR-DSDS & DR-DSDS

Experienced with opening JIRA Tickets and escalating the issues for the fix.

Verifying device issues through HyperTerminal (AT commands)

Loading Meta & MPSS builds using JTAG & T32, loading MBNs, calibrating devices, writing IMEI using QPST.

Execution of automation script in Python & Perl for various test scenarios

Debugging of issues by analyzing various 3GPP protocols such as S1AP and X2AP also looking into High BLER, Low Throughput, Low MCS and RBs and various unexpected KPIs by applying knowledge of UMTS/LTE stack: NAS, RRC, RLC, PDCP, MAC and ML1 layers.

Research Assistant- Michigan Technological University

Developed Freedom Car Battery Meeting DOE goals under Prof. Hackney supervision, Designed positive electrode with the pore fraction, inert material fraction, particle radius, separator area, electrode thickness,Voltage limit

Hybrid pulse power capability, Cold cranking capability, Available Capacity, Energy and power had been tested for different C rate, Cycle number, SOC. Analytical solution were implemented using Mathematica

Tools/Proficiency:

QXDM, Apex, QMICM, QPST, KPI-ATS, HyperTerminal (AT commands), WIRESHARK, DATUM, OSS, TEMS, MapInfo, NetAct, Actix, Wind Catcher, Spirent Network Emulator, Iperf, Python & Perl.

Technical Trainings:

Completed RF Basics and Propagation principles training

Completed NSN – LTE Network optimization training

Completed Ericsson – UMTS Network optimization training

Education:

M.S. Electrical Engineering, Michigan Technological University. (cgpa:3.16/4) May, 2015

B.S. Electrical & Communication Engineering, MIST, Bangladesh. (cgpa:3.02/4) Feb, 2012

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