Filter

Articles:

OTA testing to gain importance with 5G

The next few years will see many more wireless users connect to wireless networks. Wireless users will expect a higher level of quality and accessibility from all their devices. Thus, carriers will need to provide better reliability in the network and in devices. The result: Testing will, therefore, need to evolve to more closely emulate… Read more »
Poster:

Complimentary Poster: Narrowband Internet of Things

3GPP release 13 has specified a new radio interface, the Narrowband Internet of Things (NB-IoT). Tightly coupled with LTE, NB-IoT is optimized for machine type traffic. It is relatively simple by design, with an emphasis on cost reduction and minimal battery consumption. Please note that we only can ship to the U.S. and Canada at… Read more »
Whitepaper:

LTE Release 9 Technology Introduction – White Paper

The LTE technology as specified within 3GPP Release 8 was first commercially deployed by end 2009. Since then the number of operators implementing the technology is strongly increasing around the globe. LTE has become the fastest developing mobile system technology. The same way GSM and WCDMA have been enhanced with additional features over time, LTE… Read more »
Whitepaper:

WLAN Traffic Offload in LTE

This whitepaper provides an overview of the WLAN offload in LTE as standardized by 3GPP, as well as the enhancements for Wi-Fi standardized by IEEE and the Wi-Fi Alliance. It also describes access methods in the joint network, treats the security, and describes IP mobility. In addition network discovery and selection are explained.
Whitepaper:

Voice and SMS in LTE

This white paper summarizes the technology options for supporting voice and short message service (SMS) in LTE, including circuit switched fallback (CSFB), SMS over SGs, and voice over LTE (VoLTE). It includes background information on the standardization process, and the commercial implications for the different options. The white paper also addresses test and measurement requirements… Read more »
Whitepaper:

LTE-Advanced Technology Introduction

Although the commercialization of LTE technology began in end 2009, the technology is still being enhanced in order to meet ITU-Advanced requirements. This white paper summarizes these necessary improvements, which are known as LTE-Advanced.
Technical Documents:

Estimation of DoA Based on Large-scale Virtual Array Data

Future 5G communication systems operating in the mmwave bands (6-100 GHz) will rely on multi-antenna techniques like beamforming and MIMO 1. Therefore, measurement and description of spatial channel information (direction of arrival DoA, direction of departure DoD) is of high relevance for mm-wave system design and channel modeling.
Application Notes:

LTE Beamforming Measurements

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 application note provides a brief summary of the transmission modes (TM) in LTE and describes the beamforming measurements for base stations (BS) and user equipment (UE). The… Read more »
Application Notes:

mm-Wave Band Signal Generation and Analysis

This application note describes how to generate and analyze wideband digitally modulated signals in the mm-wave range. Measurement results such as error vector magnitude (EVM) and adjacent channel power (ACLR) are shown. Two test setups and their measurement results on a commercial V-band transceiver module are presented