Tezei Dejene Principle RF Engineer

Silver Spring, MD

adnfts@r.postjobfree.com

240-***-****

OBJECTIVE

My objective is to obtain a position as RF Engineer with a high-quality organization that the field of Telecommunications industry candidate with virtue strong engineering background will allow me to contribute my experience, creativity and assertiveness to its ever-advancing workplace.

CAREER SUMMARY

Experience in using Map Info and TEMS for RF optimization

Investigating coverage and handoff issues utilizing TEMS Investigation

Working Knowledge drives tools such as TEMS, Spectrum Tracker, Planet EV and Invex 3G

Extensive knowledge of RF design principles, main emphasis is network Cell Planning and Optimization

Having Good experience for RFDS creation, Plumbing Diagram and Antenna Models.

Having Good experience of RND/CIQ for UMTS First and second carrier.

Having Good experience of LTE design & Optimization.

Having Good experience of PICDs for initial Cluster design of UMTS carriers.

Atoll hands on experience and good knowledge of traffic mapping.

Have Experience and understanding of GSM, UMTS, CDMA, and TDMA architectures

Experience in performing UMTS/HSDPA Venue test and Post Processing the result using Cingular propriety tool

Familiar with RF Engineering aspects of cell sites construction and communication skills.

Performed site survey for installation of new Equipments, UMTS, GSM, HCHC, KDI, LMU and WLS

Understand/Run T1 Cables CSU to BTS Skill section

Excellent skills in the field of cellular communication with extensive experience of installation, Testing, Commissioning and maintenance of Radio Based Stations, Load Monitoring Unit and Wireless Location System

Capable of handling, and designing a new network for an operator from the grass root level

Understand All Components of GSM Network Including T1 Architecture, RF architecture and Microwave Theory.

Excellent communication skills, leadership qualities, systematic approach and ability to work effectively in a fast-paced environment

Clear understanding of Business Environment and its functionalities

Strong in management skills, decision-making and self-confident

Ability to work under extreme pressure within timeframes and Cost effective

Proven ability to deal with a variety of Partners and Subcontractors and General Contractors

VoLTE experience, VoLTE Traffic management, Samsung Macro, Ericsson Macro, Nokia Minimacro & Airspan Minimacro sites.

Experience on ACTIX Spotlight/Analyzer, ACTIX One, MapInfo, MCOM, Ericsson TEMS, BO, v10.2.2, RFDS Agilent, eDAT, WPS, ALU WMS, NSN OSS, Ericsson OSS, Mo shell, CHEF BO, Nortel, Tableau, Wind Catcher, Pass loss 5, Google Earth, Planet, iBwave, ATOLL, Asset, Spectrum Analyzer tools for Pre Optimizing and analyzing Drop call reasons, SINR and low Throughput, RSSI issues and Handover issue.

TECHNICAL SKILLS

RF Drive Test Tools

TEMS Investigation, Invex 3G, Wind catcher, Ericsson FOX& NOX, Lucent ALERT, BUILD, LDAT, Agilent CDMA pilot scanner & receiver,OPUS32 & Walkabout etc.

RF Design & Processing

TEMS and MapInfo, Atoll, Asset, Planet EV, Areso,Wizard, QE Design, iBwave

Wireless Technologies

GSM, UMTS, EDGE, GPRS, CDMA,TDMA,EVDO,Wimax,iDEN,HSDPA, DAS, VoLTE,Small Cell, 4G & 5G Washington DC.

Microsoft Tools

Access, Excel, Outlook, Word, and Power Point

WORK EXPERIENCE

4/2015- 12/2020 Senior RF Engineer

BAWA Market

Sprint

Worked as a RF Optimization & design Engineer for Sprint's LTE and CDMA network (Ericsson-

NSN-Samsung) in sprint markets to provide support and services for day-to-day Design,

Optimization and Performance issues.

Design for Baltimore & Washington DC market using Atoll early on it included

Capacity, Microwave & Repeater design.

Analyzed drive test data using TEMS and make recommendation to improve coverage hole missing

neighbors.

Reviewed Atoll parameter settings using Ericsson Link Curve and Atoll standard

Provided Virtual LTE Network deployment based on Atoll tool: Link budget calculations for Uplink

and Downlink. Coverage prediction maps (i.e.: RSRP, C/I, throughput).

Run ACP for initial KPIs of the Baseline Project

Run Simulation for RSRQ and SINR

Run RSRP analysis to review the project/market coverage overview

Optimized and Designed to meet the require KPIs

Checked Alarms, RSSI, VSWR troubleshooting and resolution.

Parameter optimization to improve UE time on LTE while ensuring KPIs for IRAT, Accessibility and

retain ability are not affected.

Design Activities -Worked with the Site Development team during the new site design phase to provide input

on RF design criteria (coverage, capacity, frequency planning with neighboring markets), link budget analysis

and coordinate and review site integration process Perform propagation modeling and coverage prediction.

Design Small cell for Mini Macro & Macro Sites.

Design and create RFDS, CIQ for Crown sites in BAWA market.

Design land lease site, site visit, site approvals and coverage prediction.

In charge of for all Mini Macro site design Creating RFDS, CIQ and ACD for mMIMO deployment.

Generate GNB CIQ for 5G technology for Washington DC market.

Perform GNB IDs, enB and TAC planning.

Generate CIQ for Cabinet Swap (ALU to AirScale BBU).

Create RFDS in SV for 5G Washington DC market (mMIMO antenna Swap (AAHC to AAHF).

Create RFDS, CIQ for all oDAS in BAWA market using Sprint Vision.

Generate RFDS, CIQ for all Crown sites.

VoLTE experience working with optimization team analyzed processed drive test data and

VoLTE traffic management, Samsung Macro, Ericsson Macro, Nokia Minimacro &

Design Macro wave sites, Preferred as a Remote Site like Transmission Tower, Water Tank, AM Radio towers, Stealth Sites.

Architecture Elements & site considerations, Remote site, Spur Node, Mine Hub, Ring Node, Fiber Aggregation Node, Transport Ring etc.

Backhaul Design, DW Line of Sight, Capacity Planning & Antenna selection etc.

Circuit Board Macro Wave magnetic loop antenna or Amplifiers design 40 meters to 160 meters.

6/2014 – 4/2015 Lead RF Engineer

NE Market

AT&T

Responsible for the design & optimization AT&T Cricket merges for NE area.

Coordinating activities & design implemented migrating both networks using Atoll.

Give direction & technical support, for RF team members & also attend AT&T, LCC meetings.

Design evaluations for specific Leap Keep sites integrated into ATT network & making

decisions about the design.

Determine cluster baseline KPIs prior to introduction of the Leap Keep sites per

Market’s LTE configuration using Atoll.

Determine cluster optimized KPIs which include integration of the Leap Keep sites.

Creating new cluster optimized KPIs for each baseline cluster using ACP (Altaro Arieso).

Determine the KPIs for all Leap Keep Sites following Optimization.

Supervising delivery of each cluster & final presentation to client.

3/2014 – 5/2014

Senior RF Engineer

AT&T

BAWA Market

AT&T and Cricket merge (migrating both networks).

Generation of PICD (Preliminary Initial Cluster Design for two Networks

Designed, implemented and optimized 110 site using Atoll.

Create Cluster Polygons with 20 & 25 sites.

Optimize azimuths & Antennas for both high band & low band project.

Run RSRP, RSRQ, dominance 5dB & 10dB for both HB (high band) & LB (low band) sites.

Run KPIs in clusters where cricket sites & computation zones to the site surrounding cricket

Polygons.

Run Arieso & ACP, Monte Carlo Simulation Results, Prediction Studies etc.

AutoForms eliminates the need for manual data coping at the beginning at the new site build

Process or modification to the existing site.

AutoFroms extracts data from Atoll, CSS-NG, iplan, and CASPER and push the data in to CSS-NG.

3/2013 – 2/2014

Senior RF Engineer

AT&T

Hawaii

UMTS 1C/2C/3C/4C and LTE 1C 2C & Small Cell design.

Designed, implemented for LTE & UMTS 332 Sites HAWAII Market.

Preparation of RFDS and plumbing diagrams using Auto Forms for LTE & UMTS.

Scoping meeting site by site with AT&T Engineers.

Mod project, RNDCIQ, Design review etc.

AutoForms eliminates the need for manual data coping at the beginning at the new site build

Process or modification to the existing site.

AutoFroms extracts data from Atoll, CSS-NG, iplan, and CASPER and push the data in to CSS-NG.

7/2012- 2/2013

Senior RF Engineer

AT&T

Richmond, VA

LTE Wave 4 design.

Designed, implemented LTE overlay sites Richmond VA.

Preparation of RFDS and plumbing diagrams for LTE Wave four sites.

Scoping meeting site by site with AT&T Engineers etc.

AutoForms eliminates the need for manual data coping at the beginning at the new site build

Process or modification to the existing site.

AutoFroms extracts data from Atoll, CSS-NG, iplan, and CASPER and push the data in to CSS-NG.

4/2012-6/2012

Principal RF Engineer

T-Mobile

Chicago, IL

RF Network Design & Network Modernization project.

Responsible for 160 site design in Chicago market.

Create final RFDS along final design upload into Network data base.

1/2011- 3/2012

DAS Engineer & Project management

AT&T

NY/NJ Market

DAS engineer with Antenna Solution Group

Atoll design for DAS plots.

Create final RFDS along final design upload into captivate, iBwave design attach to RFDS.

Responsible for DAS RFDS NY/ NJ market

All DAS Project management work etc.

CSS, MRIFT, Mobius data base etc.

Enter site in to iplan.

Export Atoll record info & submits to RAN to update master database etc.

07/2009 – 12/2010

Principal RF Engineer

UMTS Project

AT&T

Richmond, VA

Designed, implemented UMTS overlay sites Richmond VA.

Preparation of RFDS and plumbing diagrams for UMTS 1st, 2nd and 3rd carrier sites in Virginia and west Virginia

Generation of PICD (Preliminary Initial Cluster Design). PICDs contain

Monte Carlo Simulation Results, Prediction Studies, Traffic import configuration RF UMTS Design Polygons.

Generation of UMTS Neighbor Plan information, UMTS to GSM and GSM to UMTS Neighbor List (Inter-Rat), UMTS Scrambling Codes.

Created SBF and RFDS pre market basis for individual’s cells to upgrade to 3G equipment based upon Antenna system and BTS system upgrade strategies.

Responsible for site RF drawing, site Walks, Co-location, Search rings, and Zoning issues with the city.

Selection of New candidates and work with site acquisition & construction team for city approval.

Hand on experience for creating propagation map with help of ATOLL design tool.

Sweep verification using Anritsu Handheld tool for Return loss, Cable loss, Insertion loss & Distance to fault measurement for site upgrades or new installations.

Ordered and verified the bill of materials required for the construction of the site.

Model tuning with the help of TEMS drive data and minimizes the gap with prediction coverage holes.

Responsible for selection Antenna, Electrical & Mechanical Tilts, and Azimuth changes for new and existing sites.

Responsible for data base changes, Issue new work orders for Major and Minor MODS.

Coordinate with Implementation, Deployment, construction, & Compliance for new site built.

Worked with the verification of the sweeps and construction of the sites as pre the given standards to build a strong network.

Organized the drive teams and helped in setting up TEMS in order to perform the required market drives.

04/2008- 06/2009

Capacity management Engineer

Sprint Nextel Communication, Inc.

NY/NJ Market

Manage the utilization of wireless network communication daily

Make recommendation to add / delete Base Radio resources for optimum performance

Improve the network performance based on network trouble tickets

Update the data base for NY West & NJ market on a daily bases, and approve all the work orders issued

Conduct, attend & plan work strategies & goals for Capacity, performance, and special event meetings

Coordinate with field engineers in resolving all cell sites’ issues within assigned area.

03/2007- 04/2008

Senior RF Design Engineer

4G Wimax

Sprint Nextel Communication, Inc.

NY/NJ Market

Designed and implemented 110 Wimax overlay sites in NJ/NY using Nokia Siemens flexi Wimax BTS.

Attend mini/full tech visits.

Provide final site approval attend mini Tech review meetings

Review and redline zoning and construction drawings

Coordinate and execute major drive testing programs and analyze measured data.

09/2006-03/2007

Principal RF Engineer

T-Mobile

UMTS Project

BAWA Market

T-Mobile 2007 & 2008 site search design for the MD, VA, & DC area

Evaluate new search rings to compare with FAA registered sites for co-location

Perform site location studies & site visit

Perform engineering support & provide a package for site acquisition

10/2004 – 09/2006

Principal RF Engineer

UMTS Project

Italy Aircom

Designed, implemented and optimized 200 UMTS sites.

Coordinated and processed CW drive testing for model tuning.

Tuned propagation prediction tool Asset.

Assessed UMTS Link Budget to ensure that both UL and DL are balanced and to determine coverage threshold requirements for various data rates requirement.

Issued search rings & collaborated with Site Development in identifying primary candidates.

Performed on-site shake-down test to identify antenna & BTS mount locations per RF design specifications.

Reviewed, redlined zoning/construction drawings (ZDs/CDs) for site build verification.

Performed following Ericsson Iub interface / Node B Live Testes.

Make technical recommendations, which include design and BSS parameters changes via analyzing RRM messages to improve system performances.

Optimized Call Setup/Call Origination/Paging/Cell Selection/Reselection via updating PCH and RACH control parameters.

Resolved and evaluated radio/network blocks calls & network capacity requirement.

Daily monitoring & review of radio network KPIs (DCs, BCs, Erlangs, etc.…)

7/2004- 10/2004

Principal RF Engineer

Cingular wireless and AT&T wireless Merge

NY/NJ Market

Work on migrating both networks & part of FTE (Field Test) team in New York, NJ & Long Island

Analyze signal coverage, frequency interference, and hand over performance and traffic data for GSM, networks and others with knowledge of network operational parameters and system hardware.

2/2003 – 7/2004

Senior RF Engineer

AT&T Bechtel 850 GSM Overlay

New York, NJ in building Design

Indoor Design for New York NJ market by using DAS & Repeater system and existing sites for selected area

Perform repeater isolation testing between donor & serving panel antenna severs

Special Project analysis in providing 2G/3G GSM850/GSM1900 overlay design onto TDMA, UMTS on GSM, and produce deliverable to customer for turn over package RF configuration sheet showing updates made in configuration database (i.e. SIMS on the AWS project) MPE calculations, MPE checklist, E911 documentation, intermediation study

Perform system design, implementation optimization, and expansion tasks including PSTN interconnect issues for GSM networks.

Participate, attend and give expert RF testimony in local city planning/zoning meeting to address issues concerning RF health issues associated with cell site towers.

3/2002 – 2/2003:

Senior RF Engineer

Ericsson GSM/iDEN/ Nokia CDMA

Maryland Market

Evaluate Ericsson’s Benchmark for GSM, IS-136, CDMA, iDEN using TEMS & Desk CAT and finalize test output similar to Comarco’s Workbench for Telephia.

Drive test and post-process data using Desk CAT.

10/2000 – 3/2002

Senior RF Engineer

NEXTEL project iDEN

BAWA Market

Perform design work for more than 200 sites in MD (Frederick, Montgomery, and Eastern Shore)

Optimize propagation models

Issue search rings

Evaluate candidate sites, perform site visits, attend zoning hearings, review construction drawings

6/2000 – 9/2000

Senior RF Engineer

US Wireless

Project GSM/TDMA /CDMA

BAWA Market

Design 95 cell sites for GSM, TDMA, CDMA and iDEN based systems to employ E911sub-systems

Design coverage areas and work closely with site acquisition

Coordinate, perform & analyze drive test data, issue search rings, evaluate candidate sites

Perform site location studies

Perform frequency planning, review FAA issues, and perform interference analysis

2/2000 – 6/2000

Senior RF engineer

Metricom Project

BAWA Market

Perform design work for 102 cell sites in Baltimore working closely with site acquisition to evaluate sites.

Attend mini/full tech visits.

Provide final site approval attend mini Tech review meetings

Review and redline zoning and construction drawings

Coordinate and execute major drive testing programs and analyze measured data.

11/98 – 2/2000

Senior RF Engineer

Nextel Partners

Project GSM/iDEN

Harrisburg, PA

Perform design work for 132 cell sites for Nextel Partners in Harrisburg, Pennsylvania; includes search ring review, traffic analysis, candidate site approval process, mini/full Tech visits, and construction drawing review.

Evaluate FCC and FAA regulatory requirements, and provide RF engineering support for real estate issues.

Perform link budget analysis for Forward and Reverse links with different propagation models and different morphology classifications.

Perform extensive propagation analysis using TEC Wizard tool for tuning various propagation parameters that characterize different environment types.

Perform engineering support for zoning hearings, answering questions from local residents concerned about the construction of new base stations.

Optimize iDEN network using Walkabout data collection tool; primary responsibilities included drive testing, post-processing and analysis of measured data, and preparing coverage performance plots using MapInfo.

4/98 – 11/98:

Design Engineer

AT&T

GSM/TDMA

New Orleans Market

Design IS-136 system in New Orleans market for AT&T Wireless. Responsible for 58 sites in approval process, attended mini/full tech visits, and developed frequency plan.

Optimize IS-136 system in New Orleans for Lucent Technologies using TEMS.

Primarily responsible for drive testing, post processing data on Execution Call Processor (ECP).

8/97 – 4/98

RF Design Engineer

WFI for Western Wireless

Voice Stream/ GSM in building Design

Oklahoma City, Albuquerque and Salt Lake City, UT

Indoor Design using Repeater system and existing site for several building

Design Nokia GSM, TDMA, and PCS 1900 system for Western Wireless markets in Oklahoma City, Albuquerque and Salt lake City, UT.

Issue search rings, evaluate candidates, frequency planning, FAA issues, and interference issues.

Perform system-wide RF network optimization; drive testing, analyzing drive test data and making recommendations for RF parameters and cell site configuration changes to improve overall network performance.

1/97 - 8/97

RF Design Engineer

Western Wireless

GSM

Seattle, WA

Design and optimize GSM system for Western Wireless in Seattle: analyze performance of assigned sites, analyze traffic load, capacity issues, C/I coverage and performance objectives. Antenna and morphology study & evaluate, select and approve base station sites.

8/96 – 1/97

RF Engineer

Lucent Technologies PCS

CDMA

Spokane WA and Boston MA- CDMA

Optimize CDMA clusters using Lucent CDMA BTS equipment.

Collect process and analyze air interface drive data using: Lucent LDAT, ALERT, BUILD tools, and Qualcomm Mobile Diagnostic Monitor (MDM) software tool.

Resolve and minimize Handover failures & Drop Calls via investigating:

oNeighbor list scrub (via Lucent Autoplex ECP system)

oPilot pollution for excessive HO ping pong effect

oSearch Window parameter change

oHandover threshold parameters (T_ADD, T_DROP, T_TIMER, etc.…)

TRAINING

Ericsson Internal Training, February 2006. Completed training courses for UMTS network design:

Wireless system evolution from GSM to UMTS.

Live testing of Ericsson Iub / Node B

Lucent Technologies, Wireless University, September 1996. Completed CDMA Optimization Training.

Cellular Institute, LCC, August 1996. Completed training courses for PCS and cellular network design:

Introduction to Cell CAD

Field Measurement Tools

Traffic Engineering

Model Optimization

Direct Sequence Spread Spectrum

CDMA Design Workshop

Link Budget Analysis

Antennas for Cellular and PCS

IS-95 Network Optimization

Introduction to IS-136

Introduction to Qualcomm CDMA

Introduction to GSM

WiMax & EVDO

Introduction to 3G

Introduction to CDMA 2000

MCPA’S TDMA/GSM

EDUCATION

1996: BS in Electrical Engineering & Electronic, UDC, Washington DC

REFERENCES

Available upon Request

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