This year, EDI CON USA will be holding an all day 5G Symposium on Wednesday, October 17th. All conference pass holders are eligible to attend.
Wednesday, October 17 | 1:05pm-1:35pm | Ballroom G
RF Technology for 5G mmwave Basestations
The ever increasing demand for mobile data continues to drive the expansion of mobile network capacity globally. As available spectrum becomes scarce in the traditional cellular bands, the industry looks to utilize the broad available spectrum in mmwave bands. Whether the use case is fixed or mobile connectivity, it has been demonstrated that the challenging propagation characteristics at mmwave frequency can be overcome through beamforming techniques.
A number of system architectures and associated semiconductor technologies may be employed to achieve a power efficient beamforming radio for a given deployment model. For smaller cell size, it may be beneficial to employ very high level of integration and high antenna count with low power per RF chain whereby for a larger cell it may be advantageous to employ high power amplifiers and fewer RF chains. In either case, one of primary challenges for the designer is the linearization of the mmwave transmitter.
In this presentation we will discuss two common radio architectures, one suitable for low EIRP and one for high EIRP. An efficient signal chain will be described for each case and optimized semiconductor technology choices will be discussed for each architecture. Finally we will briefly review how a fully digital beamforming approach compares to the above described analog approaches, and technology requirements to enable digital beamforming architectures for future mmwave systems.
mmwave technologies, beamfomring architectures, tradeoffs between antenna complexity and technnology fit.
Dr. Thomas Cameron is the Director of Wireless Technology at Analog Devices. In this role he contributes to industry leading innovation in integrated circuits for radio basestations and microwave backhaul systems. He is currently working on the research and development of radio technology for 5G systems in both cellular and microwave frequency bands. Prior to his current role at Analog Devices he was Director of Systems Engineering for the Communications Business Unit. Dr. Cameron has over 30 years of experience in research and development of technology for telecom networks including cellular basestations, microwave radios and cable systems. Prior to joining Analog Devices in 2006, he led the development of a broad range of RF systems and technologies at Bell Northern Research, Nortel, Sirenza Microdevices and WJ Communications. Dr. Cameron holds a Ph.D. in Electrical Engineering from the Georgia Institute of Technology. He has 7 patents in wireless technology and has authored numerous technical papers and articles.
Wednesday, October 17 | 1:45pm-2:15pm | Ballroom G
RF Front-end Technology and Tradeoffs for 5G mmWave Fixed Wireless Access
Fixed wireless access (FWA) is the key market driver and technology helping to launch 5G Enhanced Mobile Broadband (eMBB) at mmWave frequencies. To properly support the carrier’s business case, deliver gigabit speeds to customers over broad areas, and avoid the complex logistics of deploying inside a neighborhood, FWA deployments must allow large inter-site distance (ISD) between base station sites. This is driving the need for phased array base stations that can deliver high effective isotropic radiated power (EIRP) and low effective isotropic sensitivity (EIS). Optimizing the base station power consumption and keeping phased array complexity reasonable is a major challenge and requires many architectural trades and prudent selection of front-end semiconductor technology. In this paper, we will discuss phased array architectures, key tradeoffs, and provide systems analysis and data illustrating how III-V semiconductor technologies, such as GaN and GaAs, can be used to optimize the performance and cost of 5G FWA mmWave systems.
Bror Peterson is a Senior Member of Technical Staff with Qorvo Inc. located in Richardson Texas. He is Systems Engineer currently focused on mmWave 5G base-station RF analysis and product development. He received an MSEE degree from Virginia Tech in 1999. Bror has been involved with research, design, and development of wireless infrastructure systems for over 18 years with a broad background in wireless communications theory and systems analysis.
Wednesday, October 17 | 2:25pm-2:55pm | Ballroom G
Using Modeling and Simulation to Assess Challenges and Solutions for 5G Fixed Wireless Access
One of the planned technologies that may change the digital landscape in the early rollouts of 5G is fixed wireless access (FWA), which will provide new and more flexible wireless solutions for broadband for the last mile to the home. The need for high bandwidth and new spectrum is driving many solutions to consider bands at millimeter wave frequencies; however, this has significant impacts on the ability of signals to propagate to a home or business and penetrate to the interior of buildings to an end user. A number of alternatives are being considered to address the challenges posed by this application, including placement of the base station and consumer premises equipment (CPE), as well as the use of new and innovative technologies such as multiple input, multiple output (MIMO) and beamforming to help overcome high path loss incurred at these higher frequencies. The business case for FWA relies on cost-effective solutions, making careful design and placement of the base stations and CPEs a critical part of making FWA work. Modeling and simulation can provide critical tools to make this analysis possible.
In this paper, we use new modeling and simulation techniques to investigate some of the most critical challenges that FWA faces for operation in the physical environment at millimeter waves. Our approach uses enhanced ray-tracing that captures the full details of polarization and multipath so that we can predict how the placement, the environment, and complex new techniques such as massive MIMO beamforming, to include hybrid beamforming, can impact the effectiveness of a solution. We begin with assessing the effects from the environment, such as the losses from foliage and penetration through building walls at millimeter waves, as well as the effects of scattering on signal propagation. We then use simulations to evaluate how the location of base stations and proposed approaches for the placement of CPEs, to include roof-top or window-mounted solutions, can help to solve some of the basic challenges for deployment. Results are presented in terms of the predicted signal-to-interference-plus-noise ratio (SINR) and the potential throughput for wireless broadband. The objective of the study is to provide insight into some of the key issues posed by FWA, as well as to provide a new proposed methodology for evaluating different designs and to plan for their placement within realistic environments.
Greg Skidmore is the Director of Propagation Software & Government Services at Remcom, a company that provides innovative simulation tools for the design of wireless devices and antennas, and the prediction of their performance in complex environments. Mr. Skidmore’s educational background is in Electrical Engineering, and his work experience includes approximately 25 years in software engineering and modeling and simulation. At Remcom, he oversees research and development for Remcom’s Wireless InSite® simulation suite for wireless communications, along with other products related to signal propagation in complex environments.
Wednesday, October 17 | 3:45pm-4:15pm | Ballroom G
Realistic Antenna Array Modeling for 5G Communications
The 5th generation mobile networks promises a revolution in the way we connect, with faster data transfer and the capacity to support a higher density of users. 5G is expected to improve along this line of services to offer high speed internet, high definition video streaming, efficiency and real time connectivity to IoT enabled devices, thus promising ubiquitous connectivity at three times the speed of 4G. In the presented work, a street intersection environment, signal communication between the cell tower and the street light pole is studied with high power transfer and solar loading in mind. At the pole level, the design of a beam steered antenna array is showcased.
The use of the theoretical infinite array allows the designer to model the full array from a single cell, thus saving on computational time and resources, and at the same time, allows the designer to calculate antenna parameters such as element pattern and impedance for boresight as well as oblique angles. A finite array is created to account for edge effect and coupling using the domain decomposition technique to again save on computational time. By using the beam steering toolkit provided by ANSYS HFSS, designers can see the performance of the array when the beam is steered to different angles in order to provide coverage to different end user devices at the street level. In addition to simulating the antenna on a platform, shooting and bouncing rays technique can give insight on the coverage zones in the city block with each bounce of the signal. This helps the designer identify the coverage area footprint and work on reducing dead zones.
Once the antennas have been designed and meet their individual performance requirements, we still need to assess how they will perform when deployed in the actual operational environment for which they are intended. Link budget analysis of the antennas in their installed environments using appropriate RF propagation models and standards-based radio libraries is illustrated to assess the quality of service for the system in the presence of other potentially interfering wireless systems.
Laila Salman received the B.S. and M.S. degrees in electronics and communication engineering from Cairo University, Giza, Egypt, in 2003 and 2005, respectively, and the PhD. Degree in electromagnetic and antenna design from the University of Mississippi, MS, USA in 2009. She also worked as a post-doctoral student at the Université de Quebec en Outaouais, Gatineau, QC, Canada till 2010. Her research was on dielectric resonator antennas, wearable antennas, microwave and millimeter-wave circuits and systems, microwave imaging for early detection of breast cancer and scattering from left-handed metamaterials. Dr. Salman joined Ansys Canada Ltd. in August 2010 as a Lead Technical Services Specialist for High Frequency Applications.
Wednesday, October 17 | 3:05pm-3:35pm | Ballroom G
5G and mmWave Device Measurement Challenges
Emerging 5G radio access technologies will drastically change the landscape of not only the cellular communication ecosystem as a whole, but more specifically the way in which radios are tested. In the search for more data bandwidth, the 5G new radio (NR) will push into new frequency ranges traditionally reserved for satellite and defense applications. The associated adaptive antenna system (AAS) technologies required to accomplish this and increase overall spectral efficiency, namely beamforming and massive MIMO, will have a dramatic impact on the testing of the associated radios. Where traditionally most of the radio functionality could be evaluated independent of the antenna system, the use of AAS makes it impossible to dissociate the radio performance from the antenna performance. The antenna arrays used with these radios make the prospect of performing a conducted test at each antenna port impractical if not impossible. Thus, even the most basic radio performance or functional metric must be performed in an over-the-air test environment. This presentation will review these test challenges and discuss possible solutions.
Dr. Michael Foegelle is the Director of Technology Development at ETS-Lindgren in Cedar Park, Texas, and has more than 20 years of test and measurement experience in RF and wireless. He received his Ph.D. in physics from the University of Texas at Austin. Dr. Foegelle has been actively involved in standards development on the American National Standards Institute (ANSI) Accredited Standards Committee C63 on electromagnetic compatibility, CTIA Certification Program Working Group, Wi-Fi Alliance, WiMAX Forum, IEEE 802.11, and 3GPP. He has served as chair or vice-chair of various working groups in those organizations and currently co-chairs the joint CTIA/Wi-Fi Alliance Converged Wireless Group and the CTIA OTA Measurement Uncertainty Subgroup. He has authored or co-authored numerous papers in the areas of Electromagnetics, EMC, Wireless Performance Testing, and Condensed Matter Physics, holds several patents on wireless and electromagnetic test methods and equipment, and is dedicated to advancing the state of the art in radiated RF testing of emerging wireless technologies. He may be contacted at (512) 531-6444 or firstname.lastname@example.org.
Wednesday, October 17 | 4:25pm-4:55pm | Ballroom G
Designing a narrowband 28 GHz band-pass filter for 5G applications
5G represents the next milestone in mobile communications, targeting more traffic, increased capacity, reduced latency, and lower energy consumption than its predecessors. To achieve these goals, networks will need to increase bandwidths through carrier aggregation and a push into millimeter-wave spectrum, all while improving spatial efficiency with base station densification, massive multiple-in-multiple-out (MIMO) and beam-forming antenna arrays. These enabling technologies will place new demands on the underlying RF front-end components, particularly the vast number of filter designs required across a heterogeneous network of base-stations (of varied cell sizes) and mobile devices. This paper takes a look at the filter challenges brought on by adopting these new technologies, the factors driving the physical, electrical and cost restraints for 5G filters as well as the supporting simulation technology that will help designers physically realize these components.
David Vye is the Technical Marketing Director for the NI AWR Group, responsible for product messaging/positioning, sales enablement, content development/distribution, demand generation, marketing intelligence and product introductions of NI's RF/microwave circuit and system design software. Mr. Vye, a former Editor and Business Development manager for Microwave Journal, has held a number of technical and marketing positions throughout the RF/microwave industry including Business Development Manager at ANSYS, Product Marketing Manager with Ansoft Corporation, Sr. Design Engineer at Raytheon Research Division and Advanced Device Center, and MMIC Design Engineer at M/A-COM's Advanced Semiconductor Operations. He is a 1984 graduate of the University of Massachusetts at Dartmouth, with a concentration in microwave engineering.
Wednesday, October 17 | 5:00pm-6:00pm | Ballroom G
Panel: What is the Best RF Architecture for 5G?
This panel of industry experts, closing out the EDI CON USA 5G Symposium, looks critically at the available design choices, including integration levels and tradeoffs, digital versus analog beam forming, integrated Si versus III/V modules, and single chip versus multi-chip.
Pat Hindle (Editor) parlayed his process engineering background into a management role in marketing communications for several leading microwave semiconductor manufacturers including MACOM, Raytheon and Skyworks (Alpha Industries), in addition to working at MIT Nanostructures Laboratory manufacturing X-ray diffraction gratings for space research telescopes like Chandra. He has a B.S. in Materials Science Engineering from Cornell University and MBA from Northeastern University. In his current role as MWJ editor, he is responsible for setting MWJ’s editorial direction and developing marketing opportunities for our clients. He has been the conference manager for EDI CON China and helped launch Signal Integrity Journal.