Mobile Wireless Learning Center

Industry Leading 4G/LTE Videos



Realizing Massive MIMO in LTE-Advanced and 5G

Charlie Zhang — Samsung Elevation beamforming and Full Dimension MIMO (FD-MIMO) has been an active area of research and standardization in 3GPP LTE-A, as initial investigation showed that promising (3-5x) cell capacity and cell edge gain can be achieved with these new techniques. In an FD-MIMO system, a 2-dimensional (2D) active array is deployed to… Read more »


RF Sampling Architecture Drives LTE, 4.5G and Beyond

Russell Hoppenstein — Texas Instruments The migration to next generation LTE systems will push for systems to handle larger bandwidths, higher frequencies, and increased density. The introduction of high sampling speed data converters facilitates directly sampling high bandwidth RF signals without having to implement a traditional mixing stage. The RF sampling converter incorporates new features… Read more »


The role of DAS in LTE-Advanced Deployment

Phil Wala — TE Connectivity LTE-Advanced (LTE-A) comprises a family of enhancements to the LTE standard that promise to increase data rates and maximize spectrum efficiency through the implementation of new network technologies. Many of these new technologies present significant deployment challenges for the carrier, including greatly increased backhaul capacity and new requirements for inter-cell… Read more »


LTE network optimization for public safety

Michael Schwab — P3 Communications, Inc Public Safety and Critical Communications Entities have been focusing on speech services and low data rate applications for decades. Nowadays information flow is frequently limited by interoperability problems like different standards or independent systems. Long-Term Evolution (LTE) has a chance to revolutionize the public safety sector and its processes.… Read more »


Real-world challenges in a LTE connected world

Keith Radousky — Quintel Solutions Wireless subscribers are, and will continue to be ravenous for more bits. Forecasts of exponential data traffic growth have come true. Also VoLTE is now launching which exacerbates the capacity problem and just as important is the need for QoE. Carriers are scrambling to add capacity by deploying additional infrastructure… Read more »


LTE for public safety

Jim Harper — Elektrobit Device solutions for commercial wireless applications and public safety applications have both common aspects and differences. Elektrobit has been developing specialized solutions for specialized, vertical wireless markets for many years, bridging the gap between mainstream commercial wireless and public safety. Device solutions for LTE Band 14 require specific features and functionality… Read more »


Understanding E911 Device Compliance in a VoLTE/IMS Environment

Eric Chu — Rhode & Schwarz Delivering E911 services is an FCC requirement and has been a part of legacy services for some time. In order to support emergency services for VoLTE subscribers, many new items need to be considered from a device and network perspective. For example, the transition from a traditional circuit switched… Read more »


Understanding and testing LTE vulnerabilities

Vuk Marojevic — Virginia Tech Continuous R&D support and innovation make LTE and its evolution appealing for a wide range of applications and services. In addition to high-capacity and high-mobility, future mobile broadband systems will also need to have high-availability to support mission-critical applications and flexibility to support new spectrum management paradigms. Researchers at Wireless@Virginia… Read more »


Key trends and drivers shaping LTE/LTE-A and beyond

Jeff Shamblin — Ethertronics A 4×4 antenna system for MIMO applications will be described along with performance data. This antenna system provides coverage for all 4G frequency bands in the 1700 to 4000 MHz range. To complement this presentation a description of an antenna optimization technique will be provided were a 5 GHz active steering… Read more »