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Test and Measurement Virtualization and Blockchain: Enablers for 5G Networks

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Tuesday, 13 November 2018 • 1:00 PM EST, 10:00 AM PST, 18:00 UTC/GMT

Fifth Generation Mobile Networks (5G) not only promise higher data rates and lower latency compared to the current mobile networks, but also focus on connecting billions of devices giving rise to some unique opportunities as well as challenges. Virtualized testing and measurements, and distributed resource utilization will play a key role in its success. Consequently, this webinar will consist of two parts, one focusing on virtualized testing and measurements, and the second focusing on Blockchain as an enabler for distributed resource utilization.

Meeting the Challenges of RF with mmWave for 5G

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Tuesday, 30 October 2018 • 2:00 PM EDT, 11:00 AM PDT, 18:00 UTC/GMT

Millimeter wave (mmWave) frequencies in combination with small Radio Frequency (RF) coverage look to be key technologies for 5G networks. However, mmWave spectrum comes with high path losses and the solution of small RF coverage to reduce signal congestion suffers from distortions of the transmitted signals. This webinar will look at how measurements of RF front ends designed for mmWave can help address whether commercial-off-the-shelf chip-based RF front end technology is ready to be used for 5G networks.

Smart Signal Processing for Massive MIMO in 5G and Beyond

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Monday, 24 September 2018 • 2:00 PM EDT, 11:00 AM PDT, 18:00 UTC/GMT

In less than a decade, Massive MIMO has gone from being a futuristic concept to a key technology in 5G, and an elementary form of Massive MIMO has even made it into LTE networks this year. With the advent of Massive MIMO, we can finally exploit the spatial domain for more efficient communications and multiplexing of users. Massive MIMO is a theoretically very powerful technology, but with great power comes great responsibility for the engineers that implement the system. The signal processing used for channel estimation, multiuser detection in the uplink, and precoding in the downlink must be implemented in the right way, otherwise, we will only achieve a small fraction of the theoretical capacity gains. Simplistic algorithms such as matched filtering and eigenbeamforming have received a disproportionate attention from the research community, probably because they are easy to analyze and implement. Moreover, the seemingly smart zero-forcing algorithm that works well in single-cell scenarios has been commonly applied in multi-cell scenarios, which it is not designed for.

In this webinar, the basics of Massive MIMO will be explained and what characterizes a smart signal processing design. This includes the concept of MMSE processing and how the spatial channel correlation ought to be utilized for interference suppression in practical multi-cell scenarios. The webinar culminates in the definition of Massive MIMO 2.0, which hopefully will be implemented in future releases of 5G.

Realizing the Promise of the Millimeter Wave Radio Frequency for 5G Networks

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Friday, 31 August 2018 • 2:00 PM EDT, 11:00 AM PDT, 18:00 UTC/GMT

Available on Demand

While millimeter wave (mmWave) frequencies for 5G networks will be a key technology for these new mobile networks, these frequencies present some operational challenges. Directional antennas at the transmitter and the receiver will help address these challenges. However, these directional antennas come with their own set of challenges that both industry and academic research is still at an early phase of addressing. For instance, better models are need to needed to address the different environments that will be encountered, such as urban environments. This webinar will examine the work that is being done in addressing these issues and some of the solutions that have been developed.

MIMO Radar and Its Role in Autonomous Driving

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Tuesday, 24 July 2018 • 3:00 PM EDT, 12:00 PM PDT, 19:00 UTC/GMT

Available on Demand

Radar not only has found widespread application in advanced driver assistance systems (ADAS) but also is one of the key technologies to enable environmental perception in autonomous driving. Unlike the traditional phased-array radar system that transmits via its antenna array a single waveform with different phase shift, multiple-input multiple-output (MIMO) radar can transmit multiple waveforms that may be chosen freely. As compared to traditional radar system with the same number of transmit and receive antennas, MIMO radar achieves significantly improved spatial resolution by exploiting waveform diversity. Due to its advantages, MIMO radar technology has been widely used in designing millimeter-wave radar sensors for ADAS and self-driving cars.

How Radar and Wireless Systems Coexist: An Analysis From Spectrum Sharing to New Regulations

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Thursday, 21 June 2018 • 2:00 PM EDT, 11:00 AM PDT, 18:00 UTC/GMT

Available on Demand

As wireless communications have become ever more important, access to wireless spectrum has become increasingly difficult. The so-called “spectrum crunch” describes a situation in which there is not enough spectrum available to support all of the networks and devices desired. As a result, a critical capability of wireless devices is the ability to share the spectrum they use with other devices, be they communications devices or not. For example, one class of critical spectrum user is the radar system for weather forecasting, navigation, and defense.

This ability to share spectrum with other users has both regulatory and non-regulatory aspects. From a regulatory perspective, there are rules designating how a wireless system needs to behave in order to protect critical operations, or fairly share the spectrum with other users. Beyond regulation, however, there is freedom of operation, and some devices will make better choices in the presence of wireless interference than will others. Network operators need a way to test the performance of devices in the presence of interference, both to understand their ability to support regulatory requirements, and to understand what kinds of choices they are designed to make.

We will provide an overview of the spectrum sharing landscape, including DFS/radar requirements, new regulatory regimes such as CBRS in the US, and industry-driven activities such as the cellular/Wi-Fi co-existence test plan for LTE-U. In addition, we will discuss how devices that operate under these various conditions can be tested to understand their performance.

Designing Energy Efficient 5G Networks: When Massive Meets Small

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Wednesday, 20 June 2018 • 2:00 PM EDT, 11:00 AM PDT, 18:00 UTC/GMT

Available on Demand

The global mobile data traffic is growing at an exponential pace. 5G is supposed to handle 100-1000 times higher throughput than current networks, but this comes at the price of a much higher energy consumption and cost, unless we can make future networks radically more energy efficient. As a first step, we need to make the energy consumption load adaptive, to save power when the data traffic is low. As a second step, we need to design the network architecture with energy efficiency in mind. In this webinar, different strategies for designing energy-efficient 5G networks will be discussed and compared. By taking a holistic approach, we will see how a mix of Massive MIMO and small cells is the most attractive solution. The speaker received the 2018 IEEE Marconi Prize Paper Award in Wireless Communications for his work on this topic.

Lowering Cost for 5G: New Testing + Manufacturing Challenges

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Thursday, 24 May 2018 • 2:00 PM EDT, 11:00 AM PDT, 18:00 UTC/GMT

Available on Demand

The cutting edge of 5G research includes the use of millimeter waves, new waveform types, new network topologies, and massive MIMO. If technologies such as millimeter waves or massive MIMO are adopted as part of the official 5G standard, mobile-device testing will become substantially more difficult and expensive. Client devices and base stations will require testing in chambers, where previously testing was done using coaxial connectors. This webinar lays out the cost issues related to handsets, CPEs, IoT devices, and network infrastructure to illustrate how innovative manufacturing solutions can bring down the overall cost of a mobile service.

Understanding Ultra Low-Latency in 5G Cellular

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Thursday, 19 April 2018 • 2:00 PM EDT, 11:00 AM PDT, 18:00 UTC/GMT

Available on Demand

Ultra-low latency connectivity of less than one millisecond is one of the key IMT 2020 requirements for fifth-generation (5G) cellular systems. In this talk, we will describe the applications that are driving these ultra-fast connections and the technologies in 5G that can achieve them. We provide an end-to-end perspective and consider latency at various layers of the protocol stack, including the physical layer (with a particular focus on millimeter wave communications), rate adaptation and scheduling, core network architecture, and congestion control.

Choosing the Right Probing Solution and Oscilloscope for Power Electronics Measurements

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Monday, 16 April 2018 • 12:00 PM EDT, 9:00 AM PDT, 16:00 UTC/GMT

Available on Demand

Passive high voltage probes, isolated channel oscilloscopes or high-voltage differential probes: They all offer different advantages for measurements on power electronics devices. This talk will give an overview about available solutions and will provide guidelines on how to select the right probe and oscilloscope for you power electronics application.

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