9005 Results
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
Best practices for mobile network testing for business-critical applications
A best practice set of tests, KPIs and limits verify the performance of a business-critical private network for communicating machines.
13-Aug-2024 | AN-No. 8NT17
The battery life measurement solution for the R&S®CMW500 platform identifies which ECUs and which applications running on telematics units impact battery life.
23-Aug-2017
Automotive radar sensors are safety-relevant and have to be comprehensively tested for reliable functioning. The R&S ® AREG100A automotive radar echo generator is a versatile instrument for stimulating radars in the 24 GHz ISM band and in the 77 GHz and 79 GHz frequency bands. Together with the R&S ® ATS1500A shielded chamber, it offers a compact solution in a minimum footprint – perfect for lean production environments.
06-Aug-2018
Rohde & Schwarz offers a powerful, wideband test solution covering millimeterwave bands (including the 5G bands) to characterize the integrated amplifiers.
08-Jan-2019
R&S VCS-4G VoIP for Air Traffic Control (for drilling companies / offshore industry)
15-Oct-2012
SME with Option DM Coder Hints for Using the Data Generator
01-Jul-1999 | AN-No. 1GPAN08
Interference hunting for critical infrastructure
11-Apr-2024
WLAN Tests According to Standard 802.11a/b/g
28-Jul-2004 | AN-No. 1MA69
The numerous supply voltages of FPGAs, CPUs and DSPs need to be powered-up in a specific order to ensure reliable operation.
08-Oct-2018
Controlling multiple DC power supply channels (R&S®NGL200/NGM200)
28-Apr-2023
This Application Note covers 2x2 MIMO in the LTE downlink. Remote control programming is demonstrated by examples for a free-of-charge program.
09-Oct-2014 | AN-No. 1MA143
Limit Checking with the Audio Analyzers UPL and UPD
04-Jun-1998 | AN-No. 1GA33
LabVIEW™ SNMP Programming for the R&S<sup>®</sup> DVM, R&S<sup>®</sup> DVQ and R&S<sup>®</sup> ETX-T Made Easy With the Viodia™ SNMP Toolkit
18-Oct-2007 | AN-No. 7BM70
How To Demonstrate Improved ACLR Dynamic Range With FSU and Noise Correction
16-May-2002 | AN-No. 1EF49
The R&S®FSW signal and spectrum analyzer is a high-performance instrument capable of measuring many key system and component parameters. Using the bit error rate (BER) functionality of the R&S®FSW-K70P option, the raw data error performance of a component or system can be accurately determined.
26-Sep-2018
The arbitrary waveform feature o Rohde & Schwarz solutions allow you to simulate device behaviors and replaces basic standalone arbitrary waveform generators.
04-Nov-2019
FSH4Remote is a free-of-charge program for connecting the R&S FSH4/8 handheld spectrum analyzer or the R&S FSC spectrum analyzer to a remote computer, and for providing remote control of the functions from the computer.
09-Feb-2012 | AN-No. 1MA180
This application note describes remote operation or monitoring of the signal and spectrum analyzers R&S® FSV3, R&S® FSV7, R&S® FSV13, R&S® FSV30 through a standard web browser.
15-Jan-2009 | AN-No. 1EF67
White Paper: Implementation of Real-Time Spectrum Analysis with R&S FSW and R&S FSVR
20-Mar-2015 | AN-No. 1EF77
CDMA2000 1xEV-DO Rel. B Non-Signaling Testing
29-Jun-2009 | AN-No. 1CM74
Program for Measurement Uncertainty Analysis with Rohde & Schwarz Power Meters
26-Jul-2001 | AN-No. 1GP43
Bluetooth® Low Energy channel sounding validation
06-Sep-2023
Assisting Tools for Operation of Windows-Based T&M Instruments
13-Jun-2013 | AN-No. 1MA218
Calibration and Verification Solution
The UWB (Ultra-Wideband) technology is a short range wide-band radio technology specified for device to device communication operating in unlicensed spectrum. It is an RF positioning technology that enables accurate and secure peer-to-peer ranging between mobile devices with robust resistance to interference while consuming very low energy and coexisting well with other radio communication systems. UWB is used for a variety of different applications, such as asset tracking, secure payment, personal tracker, real time location services and keyless access and start of a vehicle etc. According to ABI Research forecasts, there will be well over 1 billion UWB annual device shipments by 2026. Almost every smart phone shipped in 2026 will support UWB services.Talking about testing aspect of a UWB device, in general two test methodologies can be adopted as other wireless products, either the traditional testing mode (so-called conducted test mode) with wired RF connection between the test measurement equipment and device under test (DUT) or over the air (OTA) test mode in an OTA anechoic chamber. Sometimes, it is not always possible or necessary to perform the tests under conducted mode due to the limiting factors, e.g. cost, space, complexity and direct access to the RF connectors of the product. In this case, OTA testing is then becoming a non-evitable approach. Moreover, OTA testing reflects the usage of DUT in a real condition.In this application note, R&S® OTA test solution covering transmitter (Tx), receiver (Rx) and Time of Flight (ToF) testing in Wireless Automated Testing (WMT) environment is described. The measurement results throughout the whole document are based on NXP Trimension™ NCJ29D5 UWB automotive IC.
12-Apr-2023 | AN-No. 1SL394
Level Uncertainty Calculation for R&S FSV Signal and Spectrum Analyzer
21-Apr-2010 | AN-No. 1EF63
5G NR Reduced Capabilities (RedCap) network scanning
A deeper look into 5G RedCap technology and its verification with field measurements avoid potential coexistence issues.
23-Apr-2024 | AN-No. 8NT13
Description of 20 MHz demodulation bandwidth for level measurement with the R&S®EB500 monitoring receiver.
09-Oct-2012