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Find the information you need from Rohde & Schwarz. Search for products, technologies, applications, manuals, datasheets, tutorials, FAQs, and more.
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Test Solutions Based on R&S®CMX500 Platform
The evolution of mobile communication enters 5G New Radio (NR) era with pivotal features. Voice call service is however still considered as an indispensable element for mobile devices and worldwide network operators continue to maintain the voice service for their subscribers. In comparison to other Over-the-Top (OTT) voice services, such as WhatsApp©, Teams© etc., Voice over NR (VoNR) and Voice over LTE (VoLTE) maintain QoS, support well established handover mechanism and emergency call, and do not require to pre-install OTT app on the phone.In order to provide premium voice service and enhance the superb user experience, audio tests on mobile devices are essential before the product launch. Different audio test aspects among which acoustic, functional, performance and field tests need to be considered.This application note describes the performance test with focus on VoNR audio quality measurement via electrical interface of the mobile device. The test solution is based on R&S®CMX500 with its integrated POLQA algorithm.
26-Jul-2023 | AN-No. 1SL401
EN-DC Mode According to 3GPP 38.521-3
This application note aims to guide through the 5G NR Frequency Range 1 (FR1) NSA RF UE conformance test according to 3GPP38.521-3 based on mobile radio tester R&S®CMX.
25-Jun-2021 | AN-No. 1SL368
Solutions and Tipps for NR FR1 in TDD Downlink Mode
5G New Radio (NR) is a radio technology specified by 3GPP and was first released in 3GPP release 15. It is designed to target three use cases, i.e. enhanced mobile broadband (eMBB), massive machine type communication (mMTC) and ultra-reliable low latency communication (URLLC). Among these three use cases, eMBB represents actually a further evolution of mobile broadband communication from LTE standard. According to the technical performance requirement defined by IMT-2020, by deploying 5G technology, peak data rates of eMBB application are expected to reach 20 Gbps in downlink (DL) and 10 Gbps in uplink (UL) direction, respectively. Typical use cases of eMBB are data hungry applications, such as high resolution 8K video streaming, virtual reality (VR), augmented reality (AR) etc.Verification of a 5G capable user equipment (UE) with respect to its achievable maximum data throughput under controllable and deterministic test conditions is an essential process during the design phase of the product. Performance centric verification through identification of the data throughput bottleneck, product benchmarking against a golden device enhances tremendously the user experience in the end.This document focuses on 5G NR frequency range 1 (FR1) with TDD duplex mode in E-UTRAN New-radio Dual Connectivity (ENDC) operating mode. As 5G NR physical layer offers a plethora of flexibility, the motivation here is to provide a kind of guideline of relevant parameter settings to stimulate device under test (DUT)'s max throughput capacity. The status quo of the R&S solutions at the time when the application note is created are described. Shown feature sets are constantly evolving, so the screenshots used and the parameters shown may change.
07-Jul-2022 | AN-No. 1SL379
Rohde & Schwarz presents a customizable solution for testing barometric performance to ensure z-axis accuracy in line with FCC regulations.
24-Jun-2021
A turnkey 5G Field-to-Lab solution based on R&S®CMX500
On the path to the 5G NR network commercialization and service launch, field test is one of the essential user centric processes that User Equipment (UE) vendors should go through
16-Jul-2021 | AN-No. 1SL369
This application note highlights RF measurement challenges and introduces Rohde & Schwarz equipment required for RF characterization.
08-May-2017 | AN-No. 1MA275
Conducted multistandard in-device coexistence testing - ApplicationCard
19-Feb-2018
This document describes the critical parameters and provides step-by-step procedures for the configuration.
08-Dec-2015 | AN-No. 1C106
This application note employs preliminary theoretical analysis and demonstrates how the problems of indevice coexistence can be measured.
28-Apr-2015 | AN-No. 1MA255
Analyze power consumption behavior and optimize your IoT device's hardware and software to achieve a longer battery life. Read more to be ahead.
CMW; CMWcards - Flyer
This application note gives the guidance of how to perform the BLE 5.1 DF RF tests according to the RF test specification of BT 5.1 by using the Rohde & Schwarz test solutions.
30-Oct-2019 | AN-No. GFM327
LTE user equipment (UE) receiver performance has significant impact to cellular radio network coverage and capacity. It determines the maximum data throughput across the air interface between the LTE base station (eNB, evolved node B) and the mobile network subscriber UE, thus it determines the total capacity across the air interface. Therefore, it is one of the most important measurements to verify the actual receiver performance of individual devices, and a key metric to compare different devices, in particular.This paper shall give an introduction to receiver performance measurements and discusses the measurement metrics as well as the challenges of over the air (OTA) measurements.
31-Aug-2017 | AN-No. 1ST001
The car of the future will be networked with the infrastructure and other road users. 5G mobile communications will be the basis for this.
LTE is under continuous development. Release 10 (LTE-Advanced) introduced carrier aggregation (CA) as the primary enhancement. Releases 11 and 12 add several new components to LTE. Some are enhancements to existing features (such as improvements to CA), while others are completely new concepts, such as coordinated multipoint (CoMP).This application note summarizes the Rohde & Schwarz test solutions for LTE-Advanced according to Releases 11 and 12 using vector signal generators, signal and spectrum analyzers and the wideband radio communication tester.
14-Jul-2016 | AN-No. 1MA272
Air Traffic Control (ATC) radar, military Air Traffic Surveillance (ATS) radar and meteorological radar operate in S-Band frequency range. In fact 4G communication systems such as Long Term Evolution (LTE) make also use of these frequencies.
28-Mar-2014 | AN-No. 1MA211
Bring satellites into your lab - Flyer
A step by step HOW TO guide to perform manual and automated wireless coexistence testing
At the end of the year 2020, there were over 20 Billion internet of things (IoT) products in the world operating using the licensed and unlicensed frequency bands. This growth trend is projected to keep steady over the coming years as more and more people adopt to a smarter and more connected lifestyle. This will result in a much busier and challenging RF environment than the one we have today. In order to understand the complexity of the RF spectrum, a white paper was published in 2021 from Rohde & Schwarz, which featured RF spectrum activity at multiple locations observed at different times of the day. The locations were selected based on population densities and the amount of known RF transmitters & their frequencies at those locations. It was also concluded that the ISM bands on average have higher channel utilization since most IoT devices take advantage of the unlicensed spectrum. The paper recommended, that while performing wireless coexistence testing, the test conditions should reflect the operational RF environment that the device is intended to operate in. Otherwise, the characterization of RF performance would only reflect ideal case which doesn’t exist in real world operation. Since it is not always possible to test all devices in the real world, relevant test methodologies need to be setup to replicate the real world as much as possible.This will help us get a better understanding of how the receiver of the RF device will behave under different RF conditions. It is also recommended to perform measurements in order to understand the behavior of the device in the future when the spectrum will get even more challenging. Therefore, a through characterization of the capability of the RF receiver to handle in-band and out-of-band interference signals in also of interest.In terms of regulatory compliance requirements for ensuring wireless coexistence performance, the ANSI C63.27 is currently the only published test standard that provides guidance on how to perform coexistence testing on devices. The test complexity is based up on risk imposed on the user’s health in the event of a failure caused by an or a plurality of interference signal. The standard also gives device manufacturers guidance regarding test setups, measurement environments, interference signal types and strategy, performance quality measurement parameters for physical layer using key performance indicator (KPI) and application layer parameters for end-to-end functional wireless performance (FWP).In this application note, the guidance provided by the ANSI C63.27-2021 version regarding test setup, measurement parameter and interference signal have been followed. It will give the reader a clear idea on how to configure standardized test instruments from R&S in order to generate the wanted signal as well as unintended interference signals and conduct measurement to monitor device performance in terms of PER, ping latency and data throughput.This application note provides step-by-step instruction on how to perform measurements using conducted and radiated methodology. Both manual and automated instrument configuration approach is explained in this document.The automation scripts are written using python scripting language and are available for download with this application note, free of charge. Official required to run the scripts are available on the PYPI database.
10-Nov-2022 | AN-No. 1SL392
This application note describes how to use the R&S CMW platform to perform the measurements defined in Bluetooth test specification version 5.
19-Jun-2017 | AN-No. 1MA282
The document provides the technical specifications of the R&S®WinIQSIM2 simulation software.
This application note outlines two different approaches for remote-controlling Rohde & Schwarz instruments out of MathWorks MATLAB.
12-Jun-2017 | AN-No. 1MA171
Development Hints and Best Practices for Using Instrument Drivers
01-Jan-2013 | AN-No. 1MA153