Engineer Design

LAMAR B. ROUNDTREE

DoD Secret Clearance

240-***-**** adjg85@r.postjobfree.com

SUMMARY

• 18+ years’ experience in antenna design, electromagnetic modeling, RF systems design/analysis, direction finding system design/analysis, satellite, and wireless RF communications system design/analysis.

• Department of Defense 8570.1 Compliant, CompTIA Security + Certification

• Expertise in antenna design, satellite (space-based) communications (GPS, payloads, transceivers, antenna, earth station) and airborne/aircraft radio systems (Doppler navigation, direction finding, communications, range, altimeter)

• Experienced with system architecture design, requirements analysis, performance optimization

• Experienced with RF system and waveform modeling/simulation/analysis

• Fluent in both English and Modern Arabic (Written and Oral) TECHINCAL

• Networks: TCP/IP, NT, Active Directory, SMTP, FTP, Cisco, Juniper

• Hardware: CPUs, PC, and Server class equipment, routers, switches, printers, NICs

• Software: Microsoft, UNIX (Solaris), LINUX (Red Hat)

• Operating Systems: Windows Operating System, Novell, Windows ME/NT/XP, Unix/Linux, WLST, ANT, JAVA scripting

• Database and Infrastructure: (Oracle RDBMS, Operating Systems, Networks, Hardware) RF and ADNS, SCIP-IWF, SHF, EHF, CBSP, HSGR, INMARSAT and other systems Data and IP Services

(ATM, Frame Relay, VoIP, PIP, VPN) MS Visio

• Routing and Switching: LAN/WAN environments

• Managed Network Services: LAN, WAN, Content Delivery, Managed IP PBX

• Call Center Technologies: ACD, IVR, Customer Portal EDUCATION

Master of Science, Network and Communications, Communication Systems, Keller Graduate School of Management

Bachelor of Science. Network and Communications, Communication Systems, DeVry University CLEARANCE

• Active DoD Secret Clearance

EMPLOYMENT

Alion Science and Technology

California, MD May 2018-Present

Electrical Engineer Lead - RF DESIGN

Experience in planning, organizing and conducting modifications and upgrades to RF system and platforms. Demonstrated proficiency in; planning, designing, researching, and incorporating relevant electrical components and subsystems.

• 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 tests are to be conducted, conducts experimental tests and analyzes electronic equipment to establish production and operation controls.

• Supports senior technical level personnel and program managers in the planning, oversight, and execution of complex and advanced projects related to system and technical product development.

• Supports multiple project activities and may support multiple programs within the organization.

• 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

• specifications.

• Evaluate/test using industry approved equipment and simulators.

• Conduct testing including 4G conformance, IOT, field tests, and carrier acceptance tests.

• Create test plans based on product requirements. Perform analyses of device and simulator logs

• and deliver results

• onboard networks use Institute of Electrical and Electronics Engineers 802.11 technology to provide an unclassified wireless interface. This wireless infrastructure is an extension of Navy ships’ wired network, the unclassified integrated shipboard network system (ISNS). The wireless access points are attached to ISNS network connections.

Airspan Networks

Reston, VA July 2017-May 2018

RF Electrical Engineer / Technical Communications Systems Engineer 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 4 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-eCSFB devices.

• 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

• Contribute in developing instrumental Strategies and Roadmaps paving the way to effectively plan, deploy, launch and optimize The Next Generation of Enh Confidential ed Mobile Broadband Communications(eMBC), Massive Machine Type Communications and Ultra Reliable Low latency Communications(URLLC), including 5G(mmWave, Beam forming and Massive MIMO systems), 5G- NR(New Radio), C-RAN(Cloud/Virtual Radio Access Networks), IoT(Internet of Things/Everything), M2M(Machine To Machine) and Wi-Fi and Vehicular communications Networks.Proven experience in Strategic Radio Planning/Design, Implementation and Expansion of wireless networks.

• 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.

LinQuest Corporation, Goddard Space Flight Center

Hanover, MD July 2015-July 2017

RF Engineer / Satellite Systems Engineer

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

• Review and provide input to enabling concepts, concept of operations, and ensuring supportability requirements are addressed and part of upfront planning for systems

• Coordinate and lead Integrated product teams (IPT)

• Ability to provide a wide variety of acquisition/sustainment technical analyses, and program management support to a government PM

• Provides analysis of proposed costs, contractor Statements of Work, and technical content

• Ensures adherence to Government acquisition policies, master plans and schedules, and develops solutions to program problems

• Have a working knowledge of system acquisitions for DoD environments, covering the DoD 5000 series

• Assist in the execution of acquisition strategies, including drafting Statement of Work, Statement of Objectives, Request for Proposal preparations, monitoring deliverables, and attending acquisition related meetings.

LinQuest Corporation, Goddard Space Flight Center

Greenbelt, MD May 2015-July 2015

Satellite Systems Engineer

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.

• Excellent oral and written communications skills and capable of working in an integrated project team environment.

• Extensive experience and expertise in system architecture, planning, design, engineering, network management, operations and support of medium to large multi services enterprise networks.

• 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 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.

• 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. D&S Consultants, Inc. Riyadh Aug. 2014 – May 2015

Kingdom of Saudi Arabia

Radio Engineer / Transmission Engineer

Determine transmission solution for new BTS/Node and insure a timely response to support the RF Coverage Planning Office and Roll out Division. Evaluate base receiver stations placement in the assigned area and insure a quality transmission topology.

• Determine transmission solution for new BTS/Node and insure 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.

Sprint Nextel, 4G Development and Integration Feb. 2014 - Aug. 2014 Reston, VA

LTE Systems Engineer

Provide subject matter expertise and program management support to research laboratory client. Provide support to a client program manager in the development of Radio-Frequency (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 in 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 in developing instrumental Strategies and Roadmaps paving the way to effectively plan, deploy, launch and optimize The Next Generation of Enh Confidential ed Mobile Broadband Communications(eMBC), Massive Machine Type Communications and Ultra Reliable Low latency Communications(URLLC), including 5G(mmWave, Beam forming and Massive MIMO systems), 5G-NR(New Radio), C-RAN(Cloud/Virtual Radio Access Networks), IoT(Internet of Things/Everything), M2M(Machine To Machine) and Wi-Fi and Vehicular communications Networks.Proven experience in Strategic Radio Planning/Design, Implementation and Expansion of wireless networks.

• 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.

Sprint Nextel, 4G LTE/ Femto Cell Development and Integration Jun. 2013 - Feb. 2014 Reston, VA

Telecommunications RF Design Engineer III

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.

• Forward Error Correction (FEC) coding, Coherent and non-coherent detection, Channel equalization, Multiuser Detection (MUD), multiuser scheduling and or media access control (MAC) protocols

• In depth working expertise with LTE-FDD, LTE-TDD, UMTS, Small Cells, VoLTE, Spectrum management, Wi-Fi, SON, smart antennas, HetNet cloud and NFV core, Apple and Android devices and applications.

• Provide radio optimization, use of ARQ, Hybrid ARQ, PHS and ROHC amongst the techniques that can be 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 ManTech International Oct. 2012 – May 2013

Kabul Afghanistan

Electronics Engineer

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, test, or maintain circuitry or electronic components, according to engineering instructions, technical manuals, or knowledge of electronics, using hand or power tools.

• Adjust or replace defective or improperly functioning circuitry or electronics components, using hand tools or soldering iron.

• Responsible for developing and/or implementing the new features to improve the existing programs and software

• Write reports or record data on testing techniques, laboratory equipment, or specifications to assist engineers.

Sprint Nextel, 4G Development, LTE Platform Oct. 2010 - Oct. 2012 Reston, VA

Radio Frequency RF Engineer II

Provide technical analysis and high 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. ITT Corporation, Systems Division Oct. 2009-Oct. 2010 Baghdad Iraq

Microwave Radio Design Engineer

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.

• design search and query engineering data in multiple sources and locations.

• 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/uW subsystems with analog, digital and mechanical designs.

• Experience with high-frequency circuit design and design tools (AGILANT ADS OR HFSS). United States Marine Corps Oct. 2005 - Sept. 2009

Camp Lejeune, NC

Radio Transmission Chief

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.

United States Marine Corps May 1999 - Oct. 2005

Camp Lejeune, NC

Digital Wideband Systems Maintainer/Operator

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 safe –guarding 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, 2 channels with vibrant-alert)

United States Marine Corps July 1996 - May 1999

Camp Lejeune, NC

Radio Transmissions System/ Satellite Transmissions System Operator Research, design, develop, or test 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. WORK HISTORY

• 2018-Present Electrical / Electronic Engineer

• 2017-2018 Technical Communications Systems Engineer

• 2015-2017 Satellite Communications Engineer

• 2014-2014 Radio Engineer / Transmission Engineer

• 2013-2014 Telecommunications Design Engineer III

• 2012-2013 Electronics Engineer

• 2010-2012 Radio Frequency Engineer II

• 2009-2010 Microwave Radio Design Engineer

• 1996-2009 Transmissions System Operators

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