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Telecommunications
Barr Group's cellular and wireless network expert witness team provides consulting, code review, reverse engineering, patent portfolio analysis, expert witness reports, and testimony for litigation involving telecommunications technologies, standards, and protocols. Our experts have hands-on experience designing telecom/datacom equipment and the composure and credentials for trial.
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Wired and Wireless Network Equipment
Barr Group is in the business of designing reliable and secure computers and we have software and electrical engineers with a deep understanding of datacom and telecom products and protocols, such as:
- Cellular GSM and CDMA protocols, including 3G/4G/5G and LTE
- Cellular handset design, including smartphones and mobile phones
- Cellular base station equipment and network design
- Wireless networks and standards from WiFi 802.11 a/b/g/n to WiMax
- Wired and wireless access points, switches, routers, and repeaters
- DOCSIS cable modems and "triple-play" broadband access devices
- All seven layers of the OSI (Open Systems Interconnection) model
- TCP/IP Internet protocol suite and middleware libraries/stacks
- Data center infrastructure design and operations
- Fiber-optic communications and equipment
- LANs, including IEEE 802.3 Ethernet, Industrial Ethernet, and 1GE/10GE
- Bluetooth, Zigbee, and other personal area networks (PAN)
- GPS, E-911 (Emergency 911), and geolocation technologies
- Satellite telemetry and ground-to-satellite communications
- Switched telephone networks (PSTN), PBXes, and Signalling System No. 7
Barr Group's cellular and wireless network experts are well acquainted with all of the mobile communications technologies, standards, and protocols as well as the operating systems and programming languages (such as C, C++, and assembly) used to develop datacom and telecom products. We are equally comfortable reviewing chip designs in Verilog and VHDL and, of course, electronic schematics.
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Expert Witness Services
Barr Group's cellular and wireless network experts support plaintiffs and defendants in litigation in U.S. District Courts, at the International Trade Commission (ITC), and before the Patent Trial and Appeal Board (PTAB). Our services include:
- Technical assistance with drafting of discovery requests
- Software source code review and analysis
- Source code comparisons for copyright and trade secret theft
- Prior art review for patent invalidity
- Intellectual property portfolio review and analysis
- Reverse engineering, including of electronics and binary code
- Data center and network infrastructure audits
- Analysis of network infrastructure vs industry best practices
- Root cause analysis for system failures
- Network traffic analysis, including WireShark sniffing
- Review of cyber breaches in light of security measures
- Expert reports, declarations, and witness statements
- Testimony at deposition, oral hearings, and trials
Barr Group has a demonstrated ability to quickly activate one or more code reviewers to match the size, scope, and complexity of any project.
The following is a representative subset of Barr Group's experts who have experience designing and/or testifying about these technologies:
Software License Agreement Expert Profile
Communication Theory and DSP Expert Profile
Microwave and RF Electronics Expert Profile
Automated Surveillance Systems Expert Profile
Vehicle Navigation Sensor Fusion Expert Profile
End-to-End Network Architecture Expert Profile
High-Speed Communication Interfaces Expert Profile
Advanced Military Radar Systems Expert Profile
Digital Cellular Mobile Radio Expert Profile
Payment and Transaction Processing Expert Profile
LLM Generative A.I. and Chatbot Expert Profile
Physical Layer Communications Expert Profile
Spread Spectrum Communications Expert Profile
Malware Detection Systems Expert Profile
GPS-Guided UAV Flight Systems Expert Profile
Computer Music and Multimedia Expert Profile
Wireless and Cellular Standards Expert Profile
Electronic Warfare and Cybersecurity Expert Profile
Internet and Cellular Standards Expert Profile
Data Science and Database Expert Profile
Semiconductor Fabrication Expert Profile
Software Design Review Expert Profile
Handheld Operating Systems Expert Profile
Mixed-Signal Electronics Expert Profile
Fingerprint Biometric Systems Expert Profile
Image and Facial Recognition Expert Profile
Internet & Web Technology Expert Profile
Adaptive Control Systems Expert Profile
Mechanical and electrical engineering consultant and professor with decades of experience in systems for automated industrial control and intelligent transportation. Significant expertise in adaptive control and intelligent transportation systems as well as nonlinear systems, vehicle dynamics and control, marine transportation, and neural networks.
Vehicle Informatics & Safety Expert Profile
Battery Design & Testing Expert Profile
Experienced electrochemist, consultant, and adjunct professor of materials science and engineering. Has extensive experience in research and industry for battery electronics, including new product development, manufacturing and testing, applications engineering, as well as battery system design.
Battery Failure Electrochemistry Expert Profile
Chemist and consultant with four decades of experience in the area of electrochemical energy related devices, including batteries, capacitors, fuel cells, electrolysis and corrosion. Has significant expertise in laptop, cell phone, and e-cigarette batteries, electric vehicles, and other applications of electrochemical energy storage. Expert working knowledge of electronics and laboratory instrumentation as applied to the testing of batteries, chargers, and battery-powered devices.
Satellite & Cellular Base Station Expert Profile
Independent engineering consultant specializing in wireless cellular mobile technology and real-time embedded software development.
Cellular Wireless Air Interface Expert Profile
Professor of electrical engineering and computer science with decades of R&D experience in communications networks and wireless signal detection and estimation.
Deep Learning & A.I. Systems Expert Profile
Speech-Based Interface & RFID Expert Profile
Consultant and former professor of computer science with decades of hands-on experience in speech recognition, IVR, RFID, streaming multimedia, and data encryption.
Speech & Voice Recognition Expert Profile
Haptic Input & Virtual Reality Expert Profile
Professor of engineering with decades of experience developing novel technologies and expertise in virtual reality, streaming multimedia, image processing and computer vision, artificial intelligence, and robotics.
Aircraft Avionics Software Expert Profile
FAA-certified Designated Engineering Representative (DER), flight instructor, and commercial pilot and former director of engineering and chief software architect for next generation cockpit flight displays.
Drone & UAV Navigation Expert Profile
USAF Academy researcher in image processing and GPS-denied navigation with decades of experience in control systems design and DSP algorithms for applications including drone unmanned aerial vehicles (UAVs).
Medical Image Processing Expert Profile
Research scientist and independent consultant with a Ph.D. in electrical engineering and specialized expertise in signal, image, video, and content processing and data compression.
Distributed Sensor Networks Expert Profile
Professor of computer science with specialized expertise in network quality of service, routing, and visualization as well as remote sensing.
FDA Medical Software Quality Expert Profile
Former director of software engineering and independent consultant with deep experience in the medical products and telecommunications industries and FDA 510(k), ISO-13485, and IEC-62304 compliant software quality systems.
Semiconductor Design Tools Expert Profile
Consulting electrical engineer with decades of experience in design of integrated circuits and software systems for electronic design automation (EDA).
Electronic Voting Machine Expert Profile
Distinguished professor of computer science with expertise in electronic voting, artificial intelligence, digital libraries, and electronic payment and e-commerce systems.
Virtual Reality Worlds & Gaming Expert Profile
Database-Backed Website Expert Profile
MIT-educated technology entrepreneur with hands-on engineering experience and wide expertise including in big data and chat and instant messaging protocols.
Digital Signature & Document Expert Profile
Former computer science professor who taught courses in operating system and compiler design and also designed datacom equipment for decades.
Connected Vehicle Telematics Expert Profile
Vehicle Sensor & Electronics Expert Profile
Independent consultant and former professor of technical product management with decades of industry experience in automotive sensors, electronics, and systems.
Naval & Underwater Systems Expert Profile
Engineering consultant with nearly thirty years of hands-on software development experience designing products ranging from autonomous underwater robots to cable modems and set-top boxes.
Linux-Based Computer Systems Expert Profile
Space and Satellite Systems Expert Profile
Adjunct professor of computer science and independent consultant with decades of experience in the field of telecommunications and information security. Has specialized technical expertise in GPS, VPNs, digital and analog electronics including RF signals and antennas, data communications and networks including fiber-optics, cellular protocols, and communication satellites.
Smartphone Software & Apps Expert Profile
Computer engineer and consultant with more than two decades of industry experience developing software for embedded systems and mobile apps powered by Android, Linux, Windows, and real-time operating systems such as VxWorks.
Video Encoding & Streaming Expert Profile
PhD electrical engineer and data communications expert with three decades of professional industry and research experience in areas such as video encoding and imaging technologies, digital signal processing (DSP), lossless data compression, and computer security. Areas of specialized technical expertise also include Amazon AWS and other cloud computing platforms.
Fiber Optics and Electronics Expert Profile
MIT-educated electrical engineer, computer scientist, and physicist with over two decades of technology expertise in areas including data communications, network processors, TCP/IP protocols, fiber optic networks, and VoIP.
Analog & Digital Electronics Expert Profile
Electronics and computer science expert with more than twenty-five years of hands-on experience analyzing, designing, and implementing real-time systems for commercial, industrial, and military applications. Has been chief architect or technical lead on numerous projects covering all aspects of the architecture and development of electronics (including circuit boards and FPGAs), embedded software, network and communication protocols, and graphical user interfaces.
DSP and Data Compression Expert Profile
Consultant and professor of electrical and computer engineering who is a named inventor on about twenty issued U.S. patents on digital signal processing (DSP) and digital receiver technologies. Teaches university courses in DSP and communication systems and writes and speaks throughout the world on applications of DSP. Also consults in advanced DSP-based communications systems.
Distributed Computer Systems Expert Profile
Computer scientist with over forty years of industry experience in design of computer systems, communications systems, electronics, and software.
Telecom Industry Regulation Expert Profile
Former lecturer and consultant in the field of digital communications technologies with industry-leading expertise in telecom regulation. Has specialized expertise in network architectures in traditional telecommunications areas, such as telephony, in data networks based on TCP/IP, and in wireless and cable systems. Also an expert in the ways these networks, their providers and users interact. Has a natural ability to explain technical, business, and legal/regulatory issues and trends simultaneously to audiences with a mix of levels of personal knowledge and expertise.
Penetration Testing Security Expert Profile
ASIC FPGA SoC Chip Design Expert Profile
Electrical engineer and computer scientist with extensive technical skills in both digital electronics and software and a track record of delivering successful silicon and system designs. Has designed and verified a variety of semiconductors including System-on-Chips (SoC), ASICs, and FPGAs. Specialized technical expertise includes memory controllers (SDRAM, DDR), high-speed communication interfaces (PCIe, SATA, USB), wireless devices, and other processor peripherals.
DOCSIS Cable Modem Expert Profile
TCP/IP Internet Protocols Expert Profile
Software and systems engineer with several decades of hands-on experience in the design and implementation of complex embedded systems based on Linux, Windows, and real-time operating systems. Specialist in Internetconnected products such as consumer electronics and IoT devices using WiFi 802.11, GSM/LTE cellular, and other wireless and wired protocols. Also has experience with FPGAs and implementing M2M communications through the use of Microsoft .NET-based web services.
Autonomous Robot Navigation Expert Profile
Smart Grid Electrical Power Expert Profile
Professor of electrical and computer engineering with significant industry experience in telecom, aerospace/defense, security, and healthcare application domains. Director of a university program that supports NASA’s Johnson Space Center and co-director of a connected infrastructure program that prototypes smart grid, smart energy, smart transportation, and other smart city projects. Research relates to those and other topics that touch on embedded computing systems and communication and networking protocols.
Mechanical Electrical Software Expert Profile
Mechanical engineer with hands-on experience in all phases of product engineering, including system architecture, system engineering, system modeling, system integration, mechanical and electrical design, as well as software and firmware development and testing. Areas of deep technical specialization include electronics design and simulation, digital signal processing (DSP), and software development in a range of programming languages.
Software Process Improvement Expert Profile
Former adjunct professor of computer science and university researcher turned industry consultant and trainer focused on software process improvement and product design. Subject matter expert in software engineering, software quality, data analytics, e-commerce, wireless communications, networking, embedded systems, web technologies, and user interfaces.
Short-Range Wireless Protocols Expert Profile
Professor emeritus of computer science at one university and an associate professor of the same at another. Also a software consultant and a leader with experience in every phase of software product development and management. Visionary, thinker, founder, writer, speaker and mentor experienced in startups, mid-size, and large companies. As an early member and technical leader of an international industry consortium, helped to establish and standardize line-of-sight communication protocols between handheld mobile devices.
Biotech & Pharma Database Expert Profile
Experienced computer engineer and corporate information technology leader with a successful track record in the biotech, pharmaceutical, medical device, and other industries. Specialized expertise in software development and testing in a variety of languages and with a range of database platforms and languages. Experienced trainer and engaging communicator.
Cloud Computing Data Center Expert Profile
A licensed professional engineer in the U.S. and Canada and an engineer with over twenty years of experience in the field of data center design and management.
Battery Chemistry Expert Profile
Technology consultant with more than thirty years of experience in battery, materials, and control system technology and strong capabilities in all aspects of battery systems and energy storage.
Settop On-Screen Guide & DVR Expert Profile
E-commerce SaaS Software Expert Profile
Computer scientist and executive with experience managing development of a range of computer systems from e-commerce and Software-as-a-Service (SaaS) websites to set-top boxes and electronics kits, including research prototypes through to commercial products and services. Experience from hands-on product development to management, marketing, and venture investment. Also worked as a researcher, software development manager, and technology executive at large companies as well as Silicon Valley startups.
Electronics Source Code Review Expert Profile
System & Software Testing Expert Profile
Microprocessor Design Expert Profile
FPGA & Semiconductor Design Expert Profile
Electrical engineer and independent consultant specializing in the design of microcontroller-based embedded control systems, especially those with a wireless communications requirement.
Communications System Expert Profile
Professor of electrical engineering with extensive experience as a technology industry practitioner.
Handheld Devices Design Expert Profile
Electrical engineer with two decades of experience in the design of embedded systems with a particular emphasis on the internals of Linux and its filesystems.
Telecommunication Systems Expert Profile
Electrical engineer and consultant with a practice in telecommunications, information technology, media, electronics, and e-business.
Mobile & Wireless Networks Expert Profile
Professor of electrical engineering and an award-winning innovator in the areas of wireless communication systems and mobile networks who has testified as an expert witness.
Wireless Protocols Expert Profile
Computer networking and wireless technology expert with over thirty years of industry experience who has been significantly involved in multiple wireless standardization efforts.
Wired & Wireless Networks Expert Profile
Career consultant in the field of telecommunications and information services with extensive involvement in the design of major voice and data networks.
FinTech & Banking Software Expert Profile
Experienced developer of high-reliability business computing systems and large-scale software projects, especially in the world of banking and financial technology.
Military Systems Design Expert Profile
Embedded systems industry veteran who built or managed the development of more than one hundred computer products.
Secure Computer Systems Expert Profile
Electrical engineer with extensive electronics and software product development experience across a broad range of industries and platform architectures.
Cellular Communications Expert Profile
Independent engineering consultant in the design of both electronics and software with a formal education in electrical and mechanical engineering.
Independent consultant and former professor of technical product management with decades of industry experience in automotive sensors, electronics, and systems.
Professor emeritus of computer science at one university and an associate professor of the same a
Professor of electrical and computer engineering with significant industry experience in telecom,
Computer engineer and consultant with more than two decades of industry experience developing software for embedded systems and mobile apps powered by Android, Linux, Windows, and real-time operating systems such as VxWorks.
Former adjunct professor of computer science and university researcher turned industry consultant
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