Stephen B. Heppe, Ph.D.
Dr. Heppe has over 25 years experience in the area of communications engineering with General Electric Space Division, Stanford Telecommunications, Telenergy and the Insitu Group. Dr. Heppe has also served as an independent consultant and expert witness in satellite communications, GPS/cellular and radio technologies, CATV user interfaces, cell networks, GSM and Voice over IP (VoIP). He has developed aircraft avionics, including data radios, GPS navigation, satellite communications, video processing, RF transmission and sensors and flight control, as well as VHF radio communications protocol for aircraft networking, spectrum engineering for satellite communications (Globalstar), mobile satellite systems and various space based Government systems including Defense Satellite Communications System (DSCS), the Strategic Defense System (SDS), spaced based radar (SBR), Milstar, NASA Tracking and Data Relay Satellite system (TDRSS), various naval satellite systems and the network for the US Air Force Consolidated Space Operations Center (CSOC). Dr. Heppe is familiar with GPS position and velocity determination for aircraft, spacecraft and ground vehicles, differential GPS and automatic dependent surveillance (ADS), navigation accuracy determination, flight testing hardware and software and protocol development and signal processing. Dr. Heppe has testified in numerous patent cases and in an ITC matter. He has published several articles and holds 2 US patents in the aforementioned technologies. He received a BSEE degree (Computer Science emphasis) from Princeton University in 1977 and his MS and Ph. D. degree in Electrical Engineering (Communications emphasis) from George Washington University in 1982 and 1989, respectively. View Full CV

1026
This expert is a professor in electrical engineering and patent holder. He is an experienced expert witness with numerous expert witness assignments including deposition and trial testimony.

• Information Theory
• Communication Theory
• Multiterminal Source Coding
• Wireless Telephony Theory ; Random Signals.
• Robust Communication Networks
• Signature Verification and Compression
• Identification/verification; Random Fields
• Video Compression; Speaker; Data Compression
• Rate Distortion; Videocodec Development

1028
Expert has over twenty-five years of experience in all areas of wireless communications, including wireless LAN technologies, frequency-hop and direct sequence spread spectrum systems, DBS and VSAT satellite communications, cellular & PCS radio design including CDMA and TDMA, RF design for CATV and DOCSIS, and OFDM broadband wireless. Experienced legal consultant in patent assessment and litigation support with testifying experience, and technology due diligence analysis for venture capital investment.

• CDMA
• TDMA
• OFDM
• Cable
• DOCSIS/Cable
• PCS/Cellular
• WiMAX
• RF Design
• Satellite Communications
• Spread-Spectrum
• Wireless LAN

1033
Expert has over 22 years of industry experience building mission-critical, commercial Object-Oriented systems. His work has focused on the design and development of complex multi-tier application server architectures, enterprise application integrations, and deploying complex, distributed web/object systems. He has 16 years of experience with numerous operating systems and programming languages, including Smalltalk-80, VisualWorks 1.0 to 7, Smalltalk/V, VisualAge, Envy, stORE, and most 3rd-party tools. He has 6 years with CORBA, DST, GemStone. XP, and UML. He also has in depth hands-on expertise in .NET, XML, SOAP, Java, J2EE, Internet Protocols, Web Services, and Application Servers integration strategies. He is also an expert in Enterprise Software QA, Due Diligence and Audits. For the last 10 years, expert has specialized in consulting primarily for Telecommunications companies. He has prior expert witness experience.

• Design and Development of multi-tier Application Server Architectures
• Hosting environments and ISPs
• Distributed Web/Object Systems
• Enterprise Application Integration
• Telecommunications Technologies
• Programming Languages
• Internet Protocols
• Object Oriented Systems
• Application Servers

1054
This expert has over 30 years of professional experience in digital telecommunications emphasizing the areas of transmission, switching and multiplexing, Internet and data networking, Voice over IP (VOIP), optical networking and SONET transmission, frame relay, asynchronous transfer mode (ATM), LAN networking, hybrid fiber coax and broadband delivery systems. He has over 15-years experience in managing high technology businesses. He is experienced in developing industry standards with both national standards committees and Bellcore. This expert has taught courses at George Washington University, the University of Michigan, the University of Utah, and Bell Operating Companies as well as in Paris, London, Toronto, Stockholm, and Munich. He has taught courses on SONET, Internet, LAN Internetworking, broadband switched services (including frame relay, and ATM). He has helped guide carriers in developing new strategies taking into account regulatory and industry directions for handling voice, data, broadband and other basic telephony and networking services. He has developed business strategies for several telecommunications technology firms across the United States on new information services. He is an experienced expert witness with numerous expert witness assignments including deposition and trial testimony.

• Internet
• Optical Networking
• LAN/WAN Networking
• Dense Wavelength Division Multiplexing
• Digital Loop Carrier Systems
• ATM & Frame Relay
• PCM (T1-T3)
• SONET/SDH (Synchronous Digital Hierarchy)
• Power Utility Communication Systems
• Digital Transmission & Switching

1058
Expert holds a Ph.D. in Economics from Georgetown University. He has more than 30 years of extensive telecommunications and IT experience as a consultant and in management roles at several large corporations. He is an experienced expert witness with numerous expert witness assignments.

• Market Definition
• Market Planning
• Market Analysis
• Organization Realignment
• Venture Planning/Divestment
• Competitive Analysis
• System Design
• System Planning
• Network Planning and Acquisition

1063
Expert has a strong background in management and integration of state-of-the-art technologies and concepts into products for both domestic and international markets. His engineering experience involves leading-edge projects spanning systems architecture to hardware development and software coding. Current activities include exploration of new business paradigms for Internet-based provisioning of information services for the consumer marketplace.

• MPEG2
• Digital Cable
• TV Broadcast Systems
• Internet Telecommunications
• Fiber Optic & xDSL Networks
• VLSI Integrated Circuit & ASIC Design & Development
• Ethernet Networking

1064
Expert has over 20-years of experience in a variety of operational aspects of the telecommunications industry, including engineering, manufacturing, customer support, marketing, finance, and general management. He has experience with packet switching systems, time division multiplexing systems, access devices, as well as network management and monitoring systems. He is experienced in technologies involving voice, data, Fax, Video, and voice over data applications. Expert is also experienced in both Local Area Network (LAN) and Wide Area Network (WAN) technology, including the evolution of international telecommunications standards. His engineering experience includes responsibility for development projects in hardware, software, and firmware systems, including chip-level development in both CMOS and ECL technologies, board-level and system-level hardware designs in support of large-scale wide area data networks. He is experienced in maintenance and support considerations for both wide-area and local-area networks interconnecting numerous processing, storage, and communications devices. This includes experience in maintaining and supporting equipment at facilities where software is used to manage the exchange of information between remote and central site equipment. These networks often operated over dial-up lines where the connect charges for the communication facility represented a significant operational cost. Included in this architecture was the requirement to manage the connection based on the ability to distinguish between valid and invalid user identification information. These networks were installed and supported in large domestic as well as international voice and data networks. He has been involved on numerous occasions in discussions, research and/or negotiations regarding both strategic and operational aspects of patent and intellectual property rights. This involvement has included companies such as Motorola, Siemens, Lucent, NTT, Linear Technologies, Data General, M/A-COM (subsequently Hughes Network Systems), LSI Logic, and Republic Telecom. He is an experienced expert witness with numerous expert witness assignments.

• Digital Transmission & Switching
• Engineering Process Management
• Engineering Tools Management
• Fiber Optic Transmission & Terminal Equipment
• Hardware and Software Development Management
• LAN/WAN Networking Architecture & Technology
• Network Architecture and Design
• Network Validation Testing
• PCM (T1-T3)
• SONET
• Voice/Data Integration

1073
Expert has over 15 years of extensive industry experience in Fiber Optic Cabling. His notable accomplishments include: designing and constructing four production facilities to manufacture fiber optic cable assemblies including off-shore facilities; developed training curricula and taught certification courses for fiber optic concepts, termination, and testing; created a training manual for fiber optic cable production; responsible for training and certification in fiber optic cable termination since 1988 including off-shore facilities; and designed and built the Multi-Cure oven for fiber optic epoxy curing.

• Fiber Optics for Communications
• Fiber Optic Cable Installation
• Fiber Termination Techniques
• Fiber Optic Cable Design
• Fiber Optic Cable Termination Techniques
• Fiber Optic Cable Termination & Installation Training

1085
Expert has extensive experience and expertise with Java, Enterprise Java, incorporating new technologies into projects and instruction with Java Database Connectivity, CORBA, Servlets, E-mail, tracking systems, Enterprise Java Beans, Server-side Programming, Security, JavaBeans, Java Server Pages, Swing GUI Development for front end of Java programs, Unified Modeling Language for design and analysis for use in Internet Applications, C/C++, GUI development in Windows 95/98/NT platforms, project work including use of Standard Template Library and applications in DNA development.

• C/C++ Languages
• Distributed Systems
• Email Servers
• Enterprise Java
• Java & Java Database Connectivity
• Knowledge-Based Automated Software Testing
• Object Oriented Programming
• Server Programming
• UML (United Modeling Language)

1098
Expert has over 20 years of research, engineering and management experience with security-related technologies, software engineering, and product development. He is an experienced expert witness with numerous expert witness assignments.

• Computer and Network Security
• Cryptography
• Digital Rights Management
• Multi-Level Security
• Internet and Wireless Security
• Programming Languages
• Operating Systems
• Software Engineering
• Quality Engineering
• High-Assurance Systems

1099
Expert is an Emeritus Professor in Electrical Engineering, holds several patents and is an experienced expert witness with numerous expert witness assignments.

• Architecture of high performance computer systems
• Experimental software and hardware for computing and communication
• Custom VLSI microcomputers and signal processing circuits
• Digital signal processing for storage devices and communication systems

1101
Expert is an Assistant Research Professor in the Department of Computer Science. His research interests include high-performance software for networked systems (e.g., Web-based computing, computational grids), communication protocols for high-performance networks and networking applications, strategies for efficient input/output systems for scientific applications (e.g., caching and collective I/O algorithms), distributed software systems architecture, and distributed simulation. He has published extensively in high-quality journals and conferences in these areas, and has received significant funding for his research activities from both commercial and government sources.

• Distributed software systems architecture
• High performance software for globally networked systems
• Web-based computing
• Communication protocols for high performance networks and applications
• Distributed simulation

1102
Expert`s experiences have included high power klystron design, millimeter-wave radiometer and antenna design, radio telescope antenna and microwave hardware design, HF antenna design for ionospheric sounding, electrically-despun satellite antenna design, millimeter-wave high-gain autotracking antenna design, payload design for INTELSAT V and VII satellites, system design for Globalstar Satellite Cellular System, antennas for tracking high data rate satellites, phased array satellite receiving antenna design, system engineering and proposal preparation on various satellite projects.

• Antenna Design, HF / VHF / UHF / Microwave
• Antenna Pattern and Gain Measurement Capability
• Passive RF Hardware (matching circuits, etc.) Design
• Communication Satellite Link Analysis
• Satellite Communication Hardware and System Design
• Electromagnetic Interference Measurements & Problem Solving
• Electromagnetic Field Safety Issues and Field Measurements

1107
Twenty-five years experience in microelectronics and optics research and development in the U.S. and in Europe. Record of visionary innovation in semiconductor device fabrication, micro-optics, optoelectronic packaging, integrated optoelectronic systems, display technology, and parallel computing architectures, underpinned by command over a wide and interdisciplinary base of skills. Strong record of scholarly publication and worldwide reputation in technology community. Leadership roles in high-profile, U.S.- and E.U.-based, government- and industry-funded, technology program development and implementation. Demonstrated ability in developing new enabling technologies into competitive product applications. Extensive intellectual property development and litigation support experience at the highest levels. Strong, results-oriented management and leadership skills.

• WDM transmission and switching
• Microelectronics fabrication processes
• Refractive and diffractive micro-optics
• Compound semiconductor devices
• Advanced packaging
• Classical and quantum optics
• Digital and analog VLSI design
• Signal processing
• Neuromorphic computing
• Low-cost, wafer-level manufacturing
• Materials processing
• Optical switching
• Display technologies
• Microfluidics structures
• Computer and memory architectures
• Guided-wave optics technologies
• Liquid crystal technology and components
• Thermomechanical design
• Optoelectronic integration and packaging
• Optical high-speed interconnection
• Micromachining
• Communication and information theory

1109
Expert has been involved in innovative wireless telecommunications network, product, and service development for over thirty years. His primary interests and expertise lie in the areas of wireless network strategic analysis and engineering. He has a proven record of successful product and network design and optimization, both as a developer and as a technical manager. As a result of his work with some of the industry`s most innovative companies and published articles, he has developed an international reputation as an expert in a wide range of wireless technologies and their applications. Throughout his career in the wireless industry, he has been at the forefront of product, system, and network development. Along the way, he has been awarded several patents for strategic innovations. Most recently, his work has included optimization and analysis of fourth generation ("4G") wireless applications. He is an experienced expert witness with numerous expert witness assignments including deposition and trial testimony.

• Wireless Telecommunications
• Wireless Standards
• Wireless Network Optimization
• Wireless Technology Analysis
• Wireless Technology Applications
• Wireless Handset Functionality
• Wireless Industry Practices
• Cellular and PCS Networks
• CDMA, GSM, and TDMA systems
• Historical Contexts of Wireless

1114
Expert has over twenty years of experience developing complex semiconductor circuits in the microprocessor, computing systems and telecommunications fields. He has spent most of his career at early stage/start-up high technology companies building teams, developing architecture and managing the intricacies of building a company from nothing more than an idea. Avoiding patent infringement and building patent portfolios have been key elements of the companies for which he has worked. He has expert witness experience.

• Microprocessor Architecture
• Multiprocessing Computing Systems
• Cache and Memory Subsystems
• Digital CMOS Circuits
• IO Channels
• High Pin Count/High Complexity ICs/ASICs
• Rapid IO, Fibre Channel, Infiniband and HyperTransport Busses
• SONET Communications Devices
• Optical Communications Devices
• Switching Architectures
• CMOS Circuit Artwork
• IC/System Interconnect Busses
• MEMs devices

1115
Expert is an innovative executive and consultant with 30 years of experience in online and Internet services industries. He has a solid background in both technical and marketing disciplines and has proven ability both as an entrepreneur and intrapreneur. He is a visible industry pioneer with international experience speaking at major industry events. He has extensive patent litigation support experience.

• Internet & Online Services
• e-Commerce
• International Operations
• Broadband Communications
• Broadband Service Deployment
• Relational Database Management Systems
• Graphics User Interfaces (GUI)

1138
This expert`s teaching and research interests are primarily in the areas of electronics and VLSI design with specific emphasis on data converter design, mixed-signal testing, amplifier design, design for yield, and high speed communication circuits. He has maintained an active involvement with IEEE. His IEEE activities include a past term as president of the Circuits and Systems Society, past membership on both the IEEE Publications Board and the IEEE Periodicals Council, and past editorial responsibilities. He is an IEEE Fellow and was a recipient of the IEEE Millennium Medal in 2000.

• Data Converter Design (Nyquist Rate ADCs and DACs)
• Amplifiers (Op Amps, OTAs, Finite Gain Amplifiers)
• Filter Design (discrete and integrated)
• Mixed signal BIST and testing
• Mixed-signal parametric yield prediction and yield enhancement
• Voltage References
• High speed communication circuits

1141
This expert currently serves as Professor of Electrical & Computer Engineering and Professor of Media Arts & Technology at a major California research university. Previously, he was Chairman of the Department of Electrical Engineering at Southern Methodist University in Dallas, Texas and he held the J. W. Runyon, Jr. Professorship in the Department of Electrical Engineering at Texas A&M University. He has over 35 years of experience in communications, signal compression, and wireless technologies. In his field he is extensively published, a frequent speaker/presenter, and patent holder.

• Data Compression
• Speech Compression
• Audio Compression
• Telecommunications Networks
• Digital Signal Processing
• Video Compression
• Image Compression
• Wireless Communications
• Multiuser Communications
• Adaptive filtering
• Multimedia over Networks

1142
Industrial experience includes work as a wireless manager with principal efforts in analysis and design of cellular, fixed wireless and WLAN networks. Previous experience also includes work on secure formatted message traffic employing multi-media communications including HR radios, satellites and landlines. Involved in the design and analysis of spread spectrum communications systems for military applications. Taught graduate and undergraduate classes primarily in communications. Publication of text on Detection and Estimation theory with a co-author anticipated in fall, 2006.

• Cellular Communications
• Spread Spectrum Communications
• Wireless Communications
• Digital Signal Processing
• Military Communications
• Propagation Analysis
• Electromagnetic Interference
• Detection and Estimation

1143
This expert has over 25 years of experience in telecommunications.

• Carrier-grade voice-over-IP / VoIP
• Internet telephony / IP telephone
• Circuit-switched networks / PSTN
• Digital cable networks & unauthorized access
• Network-based enhanced services
• Computer-telephony integration
• Videoconferencing systems & protocols
• • WAN & LAN network architectures
• Software design & implementation
• Intellectual property: analysis of claims, specification, prior art & market value
• Venture capital finance for tech ventures

1146
This expert`s 35-plus year career in industry and academia includes research, software and algorithm development, project management, pioneering medical equipment development, and nuclear medicine.

• Image Processing
• Graphics
• Algorithm Development
• Display Drivers
• 3D
• OpenGL
• Cameras
• DSP
• Machine Vision
• Telecommunications
• Semiconductor Inspection
• DNA imaging
• Medical Imaging
• Visualization
• Software management
• Software development
• Scientific software

1153
This expert is an Analog/RF integrated circuit designer with background in Bipolar (SiGe), BICMOS, SOI, CMOS and GaAs high speed processes. Expert in PLL, DLL, and VCO circuits. Worked on various clock and data recovery circuits, and synthesizers beyond 20 GHz. Developed 40 Gb/s, 10 Gb/s and 2.5Gb/s SONET data communications ICs. Several years of work in the design of high-speed data converters, RFICs and MMICs. Strong DSP background and expertise in high resolution sigma-delta converters. Recent work on SOS and photonics. Participated in several start-ups from the beginning, including recruitment and setting up the design tools. Expert witness experience at the ITC.

• Phase Locked Loop (PLL) and Delay Locked Loop (DLL)
• Analog Integrated Circuit (IC)
• Mixed Signal High Speed Design
• Digital Signal Processing
• Voltage Controlled Oscillator (VCO)
• Data Conversion (ADC, DAC)
• Data Transmission and Recovery
• Radio Frequency (RFIC, MMIC)

1164
30 years of experience in producing cost effective, high performance, products implemented with state of the art technology. Taught at 3 major engineering schools, visiting professor at University of San Diego, and is writing the textbook - "MicroComputer System and Software Design". This expert is well known and versed in the necessary parallel supporting disciplines to develop state of the art RF solutions; microprocessor system design and programming, DSP (Digital Signal Processing), antennas and communications technology. His extensive experience includes the design and manufacture RF systems and the associated engineering technologies of RF systems, RF equipment, DSP processing, and antennas from ELF through EHF. He has extensive experience in both teaching and lecturing on RF & RFID design and supporting technologies in both the academic and professional environments.

• RF (Radio Frequency) transmitters, receivers, matching networks, and antennas
• Computer Telephony
• Digital Signal Processing
• Digital Switching
• MicroProcessor Hardware, Programming, and System Design
• High Volume Manufacturing
• PBX and Key System Technology
• Voice Response Technology
• Wireless Technology