Welcome to the Mobile Wireless Learning Center! The site is divided into several sections: 5G, 4G/LTE and Mobile Network Testing.  Content is updated frequently, so please come back often to see what’s new. Thanks for visiting!

5G Technologies

Latest posts about 5G Technologies

White Paper: Radio fundamentals for cellular networks

White Paper: Radio fundamentals for cellular networks

Cellular technologies have advanced from first generation (1G) analog technologies to advanced high performance fourth generation (4G) and fifth generation (5G) systems in just four decades. Despite the increase in complexity of wireless standards and devices, cellular technologies maintain a set of common principles that form the basis behind the design of cellular systems. In…

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Analysis of Delay and AOD Spread at 67 GHz for an Urban Micro Street Canyon Scenario

Analysis of Delay and AOD Spread at 67 GHz for an Urban Micro Street Canyon Scenario

In this paper, we present results from a channel measurement campaign at 67 GHz in Tokyo with focus on the delay spread (DS) and azimuth angle of departure spread (ASD). With mean values of 15.7 ns and 20.1° for a 20 dB threshold, the DS is lower than assumed in the current 3GPP channel model…

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High-Resolution Directional Channel Measurements at 67 GHz and Advanced Analysis of Interactions Using Geometric Information

High-Resolution Directional Channel Measurements at 67 GHz and Advanced Analysis of Interactions Using Geometric Information

This paper presents results from a high-resolution channel measurement campaign at 67GHz in a street canyon in Tokyo, with focus on an extended evaluation method which incorporates map-based side information. Besides being beneficial for validating the results of the path estimation, the analysis allows the identification of main sources of interaction and the differentiation between…

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4G/LTE Technologies

Latest posts about 4G/LTE Technologies

LTE Transmission Modes and Beamforming

LTE Transmission Modes and Beamforming

Multiple input multiple output (MIMO) technology is an integral part of 3GPP E-UTRA long term evolution (LTE). As part of MIMO, beamforming is also used in LTE. This white paper discusses the basics of beamforming and explains the eight MIMO transmission modes in LTE Release 9.

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How about 5G EVM measurements better than 40 dB at 28 GHz

How about 5G EVM measurements better than 40 dB at 28 GHz

The 28 GHz band is one of the 5G frequency candidates that gains a lot of attention in South Korea and the USA. Signal bandwidths of up to 500 MHz are under discussion. The R&S®SMW200A vector signal generator and R&S®FSW signal and spectrum analyzer from Rohde & Schwarz deliver the required performance for transmitter and…

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LTE Basics – Part 03

LTE Basics – Part 03

OFDMA time-frequency multi-plexing, LTE spectrum flexibility, LTE frame structure

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Mobile Network Technologies

Latest posts about Mobile Network Technologies

CPRI RE Testing

CPRI RE Testing

More and more mobile radio networks implement remote radio equipment (RE) that is connected to the base station main unit via a digital interface using standardized transmission protocols such as CPRI. This application note explains in detail the instrument setup and configuration needed to successfully test your remote radio head.

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Webinar: An Introduction to Tools and Techniques for Mobile Network Testing

Webinar: An Introduction to Tools and Techniques for Mobile Network Testing

This webinar provides a practical introduction into the tools and techniques most commonly used in mobile network testing. Topics include cable and antenna testing, RF measurements, signal demodulation, voice and data performance, spectrum clearing and interference hunting, as well as general troubleshooting methodologies. Real-world examples will be used.

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Webinar Series #1: The Practice of Interference Hunting – The Basics

Webinar Series #1: The Practice of Interference Hunting – The Basics

Radio interference affects our ability to communicate and is a big problem.  Learning how to identify interference, the sources and the solutions is getting a lot of attention in recent years. This webinar discusses radio interference and a basic understanding of why it is a problem, what to look for and adverse effects on radio…

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