Mutahir

562-***-**** ab9vu6@r.postjobfree.com

*** ****** *** *** ***, Long Beach, CA 90814

Summary of qualifications:

Very good knowledge on RF/ Microwave, Electronics Design, Wireless Standards/Protocols and Digital Signal

Processing principles. And have implemented several projects on the above mentioned topics

Thesis and research work on 4G LTE advanced uplink transmission

Submitted research paper for publishing to IEEE on the thesis work

Two plus years of experience working as a RF Engineer, have handled various troubleshooting problems with

Hardware and Software on different platforms and writing technical reports.

Excellent communication skills, and have worked in a demanding environment which involves interaction with

interdepartmental members and resolving issues in a fixed time frame

Education:

Master of Science in Electrical Engineering GPA: 3.72

California State University Long Beach

Bachelor of Engineering in Electronics & Communication Percentage: 73%

Visvesvaraya Technological University, Bangalore, India Grade: First Class with Distinction

Relevant Courses:

RF and Microwave Engineering, Electromagnetic Waves, Electronics circuits, Network Analysis, Analog Circuits, Mixed

Signal IC design, Antennas and Propagation, Advanced Digital Signal Processing, Design of Digital Filters, Wireless

Communication, VLSI Design, Non Linear Control System.

Technical Skills:

C, VHDL, Verilog, Perl

Languages

Microwave office 2010, Sonnet Suite, Tx-Line2003, ADS, PSpice, Anite

Design Tools

Nemo, TEMS, Agilent, HFSS, ATOLL, Cockpit, LabView, Cadence

Virtuoso, Synopsys HSPICE, MATLAB, XILINX ISE 12.1, Street Atlas,

Processors/Controllers AutoCad

Operating Systems 8085, 8086, 8051, PIC, TMS320C54xx

Wireless standards and protocols Windows, Linux

Hardware/Equipment GEN2, TCP/IP, UDP, HTTP, UMTS, Wi-max, GSM, CDMA, LTE

Oscilloscopes, ADC, DAC, Spectrum Analyzers, Data Acquisition (DAQ)

device, Network Analyzers, Signal Generators, Logic Analyzers, Relays,

Multi-meter, Soldering Gun, LNA, LNB.

Work Experience:

RF Engineer III, Avion Systems – Ericsson April 2013 - Aug 2013

Providing services for Sprint, which focusses mainly on the Network Vision conversion of the Sprint network

Working in network management in a team environment for network layovers, successfully designing, optimizing

towards meeting customer network SLA's and KPI's, Inter Vendor HHO and optimization for CDMA.

RF Engineer, Mobilenet Services, Irvine, CA June 2011- April 2013

Worked as RF Engineer for UMTS and LTE testing of AT&T in lab and field both.

Recommendation (Azimuth, Power, Tilt, Cell/Node/RNC Parameters) as per drive test data/Terrain to meet Agreed

KPI.

Generated report on RF parameters, Asset Planning Tool and kit (TEMS and Agilent), Antenna Serial Numbering

with Cell phone numbering. Also making report for project estimation, project tasking and Administrative task

(Budgeting, Efficiency, Right at time, etc.)

Verify Radio quality (BLER) requirement on several different radio services, Handover functionality performance,

the network, site functioning properly, antenna positions, antenna directions or tilt and swapped feeders, neighbor

relations list.

Experience on Analysis Drive test data with Anite Nemo outdoor and Reporting of RF and Network Problems like

Pilot Pollution, Bad Coverage area, Drop Calls, Access Failures, Handovers Problems (Intra Frequency, IFHO,

IRAT, Low Throughput )

Verify Call success rate and call drop rate, UMTS and LTE basic functionality and understanding Layer 3 messages.

Analyze drive test problems for the whole network and determine if drop call caused by poor RSRP, SNR and Ec/Io

coverage, RF interference, pilot pollution, missing neighbor, over shoot, poor handover parameters, poor power

control, site addition recommended if necessary etc.

Preparing Acceptance Optimization Reports(Checking KPIs, R99 DL and R99 UL throughputs, HSDPA and

HSUPA throughputs session by session if the values ok that are wanted by operator)

Developed good understanding in UMTS Field testing and data analysis and Troubleshooting.

Performed Site walks for indoor DAS engineering.

Mainly worked on TEMS Investigation Tool, Actix and MapInfo. Microsoft Streets and Trips and Atlas were used

as navigation tools. Also came across Agilent test equipments.

Collect UE physical measurements (SC, RSCP and Ec/No) for all the cells in the active Set and Collect scanner

data for all the detected cells.

Testing includes analysis of voice/data call quality, signal strength, site scanning and throughput for the UMTS

network.

Testing includes : IRAT(Inter-Radio Access Technology) testing, 911 testing, Stationary testing, Shoehorn testing,

OCNS(Orthogonal Channel Noise Simulator ) test, SSV(Single Site Verification) test, Implementation of Hard hand

downs between two carrier (IFHO) and hard hand off between two carriers of different switch (ISSHO) test, etc.

Tools: TEMS 9.1.1, AGILENT 12.0, ADS, Nemo 6, ATOLL 2.5.1, Actix, MapInfo, MS Street and Trips,

HyperTerminal, Street Atlas

Student Technical Assistant, SSD-IT, CSULB Aug 2010 – May 2011

Performing preventive maintenance of department computers and laptops

Writing/executing batch scripts and registry files to customize windows operating system

Installing Operating System on desktops and laptops

Troubleshooting hardware problems of desktops, laptops and printers

Documenting software installation and its default setting procedures.

Research Experience:

Research Assistant, Signal Processing and Communication Lab, CSULB, CA Sep 2011 – Dec2012

Thesis work on 4G LTE advanced uplink transmission, which employs SCFDMA scheme.

Have proposed a base band model to further reduce the peak-to-average power ratio of the transmitted signal and

termed it as “Hadamard SCFDMA”

Implemented the algorithm for the proposed system using MATLAB and simulated the results

Have submitted a paper titled “Hadamard SCFDMA– A Modified uplink transmission scheme with low PAPR,”

for publishing in IEEE

Academic Projects:

VHF Band (144 MHz) Class E Power Amplifier design

Designed and constructed, including board layout.

With a 4.0V power supply, the circuit exhibited a 70.48% PAE (85.1% drain efficiency) with approximately 1.8W

of output power into a 50 Ohm load.

Wilkinson Power Divider and Quadrature Hybrid design

Designed the Wilkinson Power Divider and Quadrature Hybrid with the given specifications using Tx -Line and

sonnet suite and plotted the S-parameters.

Implemented a MATLAB code to verify the S-parameters

Communication Systems Design & Simulation using MATLAB

Simulated the whole system. Transmitter, Receiver and the AWGN channel was simulated for BPSK, QPSK and

BPSK-OFDM/QPSK-OFDM modulation techniques

The Bit Error Rate (BER) was calculated theoretically and also practically and was graphically represented with the

help of BER curves.

Speech Coding and Synthesis using Linear Predictive Coding Technique

Implemented Algorithm in MATLAB to read the speech signals from *.wav files and performed speech coding

using Linear Predictive Coding Technique (LPC)

Synthesized speech signal using the LPC co-efficient and verified the output on the sound card and speaker.

Design of Carry Look Ahead Adder

Designed a 16-bit carry look ahead adder using cascode voltage switch logic (CVSL) belonging to differential logic

family of CMOS. This adder was evaluated in terms of power dissipation, propagation delay, noise margin and

area.

Tools: Cadence® Virtuoso and Synopsys® HSPICE environments using CMOS 60um technology.

CDMA/IS95 Pilot and Sync channel Transceiver on Altera DE2-115 FPGA

The transmitter side is simulated on MATLAB and the signals were acquired by Agilent 33220A Arb generator and

ported on to the FPGA board.

The CDMA receiver is being implemented on Altera DE2 FPGA board to decode the Pilot and Sync channel

information.

Tools: Verilog and MATLAB.

Boundary Scan testing for FPGA chip

Boundary scan testing was done for the FPGA chip on the Spartan board. The complex task was modularized and

a library was created from which we could link different functions and procedures to the main project. VHDL

coding was used in this case.

Undergraduate Project: Intruder Detection and Spot Light Tracking Security System

The system detects an intruder in a particular area using infrared sensors and a spot light tracks the person where

ever he moves in the specified area. A person has to input the pass key using the RF transmitter to roam freely; if

not security measures are taken.

Awards and Activities

Paper presentation entitled “Use of Bluetooth for Short Distance Voice Communication” in 2008 at the IEEE

Student Convention, Bangalore

Poster presentation at California State University on research study on 4G LTE advanced uplink transmission

Presently a Student member of IEEE

Volunteered at Technical Events held at college while undergraduate studies

Passion for Travelling, Adventure, History and Painting

Contact this candidate