Electrical Engineer System Operator
Resume:
L
LAMAR ROUNDTREE
adpv82@r.postjobfree.com
Waldorf, MD 20603
SUMMARY
20+ years' experience in Radio design, electromagnetic modeling.
RF systems design/analysis, direction finding system design/analysis, satellite, and wireless RF communications system design/analysis.
Expertise in antenna design, satellite (space-based) communications (GPS, payloads, transceivers, antenna, earth station) and airborne/aircraft radio systems.
Experienced with system architecture design, requirements analysis, performance optimization Experienced with RF system and waveform modeling/simulation/analysis
SKILLS
Proficient in C++,Java, Perl, Python, and Linux Software
Cybersecurity
Penetration testing
Infrastructure development
Wireless Engineering
Radio Frequency Engineering
OSI network layers
Application stacks
Windows Server
Application testing
Server/network configuration
EXPERIENCE
5G Systems Engineer
Arlington, VA
The Science and Technology LLC / Nov 2020 to Nov 2021
Provides technical leadership and oversight related to designing, developing, implementing, maintaining, lab and field testing, and supporting 5G related applications and networks to ensure the integrity of high availability network infrastructure.
Responsible for the design/support activities for the 5G network.
Gather organize and critique business requirements with internal and external customers as well as vendors to support the 5G network.
Lead RF design, optimization and testing in RAN technologies (LTE/5G-SA/NSA).
Fault investigation/reporting which includes cooperation with other teams.
Research, analyze, test, retest, and troubleshoot complex problems.
Evaluate on-going and planned interoperability programs.
Establish procedures for compliance with enterprise and state and federal network security regulations.
Collaborate with strategy teams to provide roadmap for enhanced capabilities of 5G network.
Work with network/security engineers on providing a seamless integration between wired and 5G network.
Electrical Engineer Lead - RF DESIGN
MD
Alion Science and Technology/ May 2018 to Nov 2020
Experience in planning, organizing, and conducting modifications and upgrades to RF system and platforms.
Leads the planning, designing, production and maintenance of a variety of complex electric or electronic components, apparatus and/or circuitry for use in electronic devices.
Determines conditions under which experimental tests and analyzes electronic equipment to establish production and operation controls.
Provides technical guidance and mentoring to lower-level technical staff.
Exercises independent judgment in conducting complex analyses and development efforts and provides technical direction to other staff.
Design, plan, and coordinate testing of wireless radio communication systems and devices.
Evaluate and test LTE communication protocol on wireless devices based on specifications standardized by US wireless network operators and the 3GPP group (3rd Generation Partnership Project).
Apply 3GPP specifications/standards for testing, including 36.523, 36.521, and 37.571.
RF Electrical Engineer / Technical Communications Systems Engineer
Reston, VA
Air span Networks/ Jul 2017 to May 2018
Duties include the implementation of our Wireless/WiMAX/LTE Products for full interoperability either with the customers' existing network or by creating a whole new network from scratch.
Led a group of four and managed requirements analysis, design and testing of new chipsets of prototype Qualcomm devices.
Developed and executed test plans for the first commercial multi-band multi-mode 1x-eCSFBdevices.
Created and executed IOT level test plans to validate functional and protocol compatibility of different Radio layer and Core infrastructure OEMs.
Specified, implemented, and integrated a cloud-based data analytics automation solution inter- operating with various network data collection mechanisms.
Architect, model and specify the LTE PHY requirement and RF/BB interface description and specification.
Work with ASIC engineering and Embedded SW teams to define detailed engineering requirements and architectural system-level design and working with third party vendors for IP evaluation and selection.
RF Engineer / Satellite Systems Engineer
Hanover, MD
LinQuest Corporation / Jul 2015 to Jul 2017
Provide Knowledge and development of legacy and WCDMA SATCOM system specifications based on multiple architectures and frameworks to resolve specific satellite payload control and network issues, develop models and simulations for alternate solutions.
Review provide input to design documentation (TRDs, Specifications, interface control documents, drawings), requirements documents (ICDs, CDDs, CPDs), ECPs, PWSs.
Organizes, analyzes, conducts, and/or monitors/oversees RF engineering activities relating to the design, development, fabrication, installation, modification, sustainment, and/or analysis of systems or systems components.
Applies RF/systems engineering technical and technical management processes to a functional specialty in IPT environments.
Satellite Systems Engineer
Greenbelt, MD
LinQuest Corporation, Goddard Space Flight Center/ May 2015 to Jul 2015
Provide SATCOM Systems engineering and technical support at the Network Integration Communications Center to identify the technical approach to resolve specific Wide Band Global SATCOM (WGS) and Defense Satellite Communications Subsystem (DSCS) satellite payload control and network issues, develop models and simulations for alternate solutions.
Perform engineering activities as they pertain to space-based equipment.
Development of SATCOM system specifications, engineering plans and test plans; development of SATCOM based architectures and frameworks.
Development of test plans and procedures; provide support to technology working groups and integrated product teams; develop technology development plans.
Responsible for developing and/or implementing the new features to improve the existing programs and software.
Profound knowledge of TDMA, CDMA and OFDMA access techniques.
Expertise in LAB and Field testing and optimization of Communication Systems by performing prototype modeling and simulation.
Provide support in assessment of technology maturity; develop technology transition plans.
High performance FPGA development for a variety of applications including SIGINT, radar, satellite communications, image tracking, and precise navigation/geolocation.
Reverse engineering of wireless communications protocols and hardware.
Software defined radio (SDR) implementation of wireless communication protocols using GNU Radio.
Software development for real-time embedded digital signal processing systems.
Radio Engineer / Transmission Engineer
Riyadh, Kingdom of Saudi Arabia, Kingdom of Saudi Arabia
D&S Consultants, Inc/ Aug 2014 to May 2015
Determine transmission solution for new BTS/Node and ensure a timely response to support the RF Coverage Planning Office and Roll out Division.
Evaluate base receiver stations placement in the assigned area and ensure a quality transmission topology.
Determine transmission solution for new BTS/Node and ensure a timely response to support the RF Coverage Planning Office and Roll out Division.
Support engineering readiness reviews, pre-milestone technical reviews and requirements analysis.
Support Management and design, integration, and implementation efforts for the Teleport Management and Control System.
Supported four Critical Design Teleport System.
Provide modeling for satellite communications topics such as Ka-band terminal site locations, DVB- S2/RCS modem selection, and SHF Tri-band terminal solutions.
Support in developing program documentation including systems engineering plans, specifications, economic analysis, and life cycle cost estimates.
LTE Systems Engineer
Reston, VA
Sprint Nextel/ Feb 2014 to Aug 2014
4G Development and Integration, Provide subject matter expertise and program management support to research laboratory client.
Provide support to a client program manager in the development of Radiofrequency (RF) wireless data network requirements and evaluation of wireless network concepts.
Provide radio frequency (RF) and wireless transmission testing for Long Term Evolution (LTE) and related wireless networks and devices.
Design, plan, and coordinate testing of wireless radio communication systems and devices.
Evaluate and test LTE communication protocol on wireless devices based on specifications standardized by US wireless network operators and the 3GPP group (3rd Generation Partnership Project).
Apply 3GPP specifications/standards for testing, including 36.523, 36.521, and 37.571 specifications.
Evaluate/test using industry approved equipment and simulators.
Effectively contribute to areas of Systems Engineering disciplines, including Research & Innovations in Spectrum Sharing Techniques, Radio Access Network (RAN) Planning and Design, Network Deployment, Optimization, Operation and Expansion of new/existing wireless networks.
Provided Professional Engineering Services to leading equipment vendors, Government-Defense, Public Safety- Confidential, and Commercial Wireless Operators in the globe.
Contribute to developing instrumental Strategies and Roadmaps paving the way to effectively plan, deploy, launch, and optimize.
Telecommunications RF Design Engineer III
Reston, VA
Sprint Nextel/ Jun 2013 to Feb 2014
4G LTE/ Femto Cell Development and Integration, Provides radio frequency (RF) and/or wireless transmission design.
Designs, plans, and oversees installation and maintenance of wireless radio communications systems, including radio propagation modeling and prediction, microwave path analysis, interference analysis, frequency coordination, cell site equipment layout, parameter definition, and ancillary equipment.
Provide technical guidance for Small Cell and HetNet related technologies such as: Interference Cancellation.
Design SON models to include Carrier Aggregation, multi-band Traffic Management, Inter-RAT Interoperability and Enhanced Mobility.
Provide radio optimization, use of ARQ, Hybrid ARQ, PHS and ROHC amongst the techniques that can implemented.
Profound knowledge of TDMA, CDMA and OFDMA access techniques.
Expertise in LAB and Field testing and optimization of Communication Systems by performing prototype modeling and simulation activities in 2G (GSM, CDMA) systems as well as 3G/4G/5G technologies, including CDMA2000/EVDO, WCDMA/UMTS, Long Term Evolution (LTE), VoLTE, Small Cells, WiMAX,802.16 and Wi-Fi 802.11xx.
Design in-building & outdoor venues deploying Metro Cells/DAS using iBwave software.
Analyze existing indoor coverage from macro network using walk test reports from TEMS/JDSU/NEMO to identify the needed coverage & capacity enhancements.
Electronics Engineer
KABUL, Afghanistan
ManTech International/ Oct 2012 to May 2013
Lay out, build, test, troubleshoot, repair, and modify developmental and production electronic components, parts, equipment, and systems, such as computer equipment, missile control instrumentation, electron tubes, test equipment, and machine tool numerical controls, applying principles and theories of electronics, electrical circuitry, engineering mathematics, electronic and electrical testing, and physics.
Read blueprints, wiring diagrams, schematic drawings, or engineering instructions for assembling electronics units, applying knowledge of electronic theory and components.
Test electronics units, using standard test equipment, and analyze results to evaluate performance and determine need for adjustment.
Perform preventative maintenance or calibration of equipment or systems.
Assemble, evaluate, or maintain circuitry or electronic components, according to engineering instructions, technical manuals, or knowledge of electronics, using hand or power tools.
Radio Frequency Engineer II
Reston, VA
Sprint Nextel/ Oct 2010 to Oct 2012
4G Development, LTE Platform, Provide technical analysis and elevated level professional and analytical expertise to the Network Development and Engineering Organization.
Responsibilities include evaluation of wireless transmission technologies and impacts to network design; validation and analysis of data collected from field in comparison to theoretical models.
Design expertise in with LTE-FDD, LTE-TDD, UMTS, Small Cells, and Voice over LTE, Spectrum management, Wi-Fi, SON, smart antennas, HetNet cloud and NFV core, Apple and Android devices and applications.
Design and analysis of wireless communications systems, Multiple-Input Multiple-Output (MIMO), Direct-Sequence Spread Spectrum (DSSS), Orthogonal Frequency-Division Multiplexing (OFDM), Modulation schemes.
Design and use optimization software such as software Planet EV, Agilent Technologies wizard TM, Forsk, Atoll and AIRCOM International ASSETT.
Use of IBM Rational DOORS Engineering Lifecycle that visualize, analyze, and organizes engineering lifecycle data and data relationships.
Design search and query engineering data in multiple sources and locations.
Identify operational requirements for new systems to inform selection of technological solutions.
Microwave Radio Design Engineer
Iraq
ITT Corporation, Baghdad/ Oct 2009 to Oct 2010
Design and develop RF and microwave circuits (including transmitters, receivers, and antennas) which will be used in data links.
Interact with internal customers and suppliers to understand circuit design requirements, volume constraints and environmental specifications so that the final design is compliant with the design requirements.
Provide daily MATLAB and Simulink analysis simulation.
Program, trouble shoot and or perform system diagnostics on communication systems.
Experience in the preparation of engineering specification, design and acceptance testing documentation.
Use of IBM Rational DOORS Engineering Lifecycle that visualize, analyze, and organizes engineering lifecycle data and data relationships.
Planning, configuration, splicing and monitoring the Optical Fiber Networks.
Design microwave IC's and integrate mixers.
Solid background in Microwave and RF design principles with experience at 8-80 GHz.
Demonstrated ability to integrate RF subsystems with analog, digital, and mechanical designs.
Experience with high-frequency circuit design and design tools (AGILANT ADS OR HFSS).
Radio Transmission Chief
Camp Lejeune, NC
United States Marine Corps/ Oct 2005 to Sep 2009
Design or configure voice, video, and data communications systems.
Supervise installation and post- installation service and maintenance.
Install, set-up, rearrange, or remove switching, distribution, routing, and dialing equipment used in central offices or head ends.
Perform telecommunications analysis and develop appropriate system concepts and layouts.
Handle responsibilities of designing telecommunications systems including calculations and cost estimating.
Established the VSAT and Radio links for the Standard VISA circuit.
Knowledge of VHF/HF//UHF and microwave radio access design.
To establish VSAT, Microwave Radio Link communications and LAN networks.
Configured and maintained LAN / WAN networks and Cisco router for clients.
Digital Wideband Systems Maintainer/Operator
Camp Lejeune, NC
United States Marine Corps/ May 1999 to Oct 2005
Repair, install or maintain mobile or stationary radio transmitting, broadcasting, and receiving equipment, and two-way radio communications systems used in cellular telecommunications, mobile broadband, ship-to-shore, aircraft-to-ground communications, and radio equipment.
Set up and operated ground support and test equipment to perform functional communication tests of satellite and multichannel systems for effective transmission.
Maintained and managed the sending, receiving, and safeguarding over $1 million dollars' worth of case Sensitive materials.
Set up and tuning of radio equipment including antennas and power sources.
Establish contact with distant stations, processing, and logging of messages.
Knowledge of VHF/HF//UHF and microwave radio access design.
Experience using LMR (Land mobile Radio), GMRS (General Mobile Radio Service) and FRS (Family Radio Service) communications (Motorola 2500 to 7500 series - VHF High Band, two channels with vibrant-alert).
Radio Transmissions System/ Satellite Transmissions System Operator
Camp Lejeune, NC
United States Marine Corps/ Jul 1996 to May 1999
Research, design, develop, or evaluate electronic components and systems for commercial, industrial, military, or scientific use employing knowledge of electronic theory and materials properties.
Design electronic circuits and components for use in fields such as telecommunications, aerospace guidance and propulsion control, acoustics, or instruments and controls.
Performed scheduled preventive maintenance tasks, such as checking, cleaning, and repairing equipment, to detect and prevent problems.
Making changes to frequencies or cryptographic codes; and maintaining equipment at the first echelon.
Inspected components of Classified and Unclassified equipment for accurate assembly and installation and for defects such as loose connections and frayed wires.
Knowledge of VHF/HF/UHF and microwave radio access design.
Conduct on-site and remote troubleshooting and maintenance assistance for problems that cross multiple systems.
Perform conceptual systems design, link analysis, hardware trade studies, technical tradeoffs, and costing for military and civilian satellite communications system design concepts.
EDUCATION AND TRAINING
Master of Science: Network and Communication Systems – in Progress
Keller Graduate School of Management
ARLINGTON VA
Bachelor of Science: Network and Communication Systems
DeVry University Feb 2011
Arlington, VA
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