Rohde & Schwarz R&S AMS32-K31 User Manual Download

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The measurements described in this application note require an OTA Performance Test System
R&S

TS8991, order no. 1149.4309.03, and the following software products:

●

"Over-The-Air (OTA) Performance Measurement Software", R&S

AMS32, stock number 1508.6650.02

●

"Option for R&S

AMS32 OTA Software: LTE SISO", R&S

AMS32-K29, stock number 1508.6680.29

●

"Option for R&S

AMS32 OTA Software: MIMO", R&S

AMS32-K31, stock number 1508.6680.31

© 2012 Rohde & Schwarz GmbH & Co. KG
Muehldorfstr. 15, 81671 Munich, Germany
Phone: +49 89 41 29 - 0
Fax: +49 89 41 29 12 164
E-mail:

[email protected]

Internet:

http://www.rohde-schwarz.com

Printed in Germany – Subject to change – Data without tolerance limits is not binding.
R&S

is a registered trademark of Rohde & Schwarz GmbH & Co. KG.

Trade names are trademarks of the owners.

The following abbreviations are used throughout this manual: R&S

is abbreviated as R&S, e.g. R&S AMS32 denotes R&S

AMS32.

Summary of Contents for R&S AMS32-K31

Page 1: ...R S AMS32 K31 MIMO OTA Performance Testing User Manual User Manual 2 1175 6678 02 01 Test Measurement...

Page 2: ...S AMS32 OTA Software MIMO R S AMS32 K31 stock number 1508 6680 31 2012 Rohde Schwarz GmbH Co KG Muehldorfstr 15 81671 Munich Germany Phone 49 89 41 29 0 Fax 49 89 41 29 12 164 E mail info rohde schwa...

Page 3: ...rement Settings 12 2 1 2 4 Fading Settings 13 2 1 2 5 Loop Settings 14 2 2 Test Run 15 2 3 Result Evaluation and Reporting 16 3 Peak Performance in Spatial Multiplexing Mode 21 3 1 Configuration 21 3...

Page 4: ...shall assume no responsibility for such use of the product The product is used for its designated purpose if it is used in accordance with its product documentation and within its performance limits s...

Page 5: ...dicates an imminently hazardous situation which if not avoided will result in death or serious injury Indicates a potentially hazardous situation which if not avoided could result in death or serious...

Page 6: ...ot observed either at all or to the extent necessary electric shock fire and or serious personal injury or death may occur 1 Prior to switching on the product always ensure that the nominal voltage se...

Page 7: ...be fuse protected in such a way that anyone who has access to the product as well as the product itself is adequately protected from injury or damage 14 Use suitable overvoltage protection to ensure...

Page 8: ...s are given warning labels that are standardized according to their laser class Lasers can cause biological harm due to the properties of their radiation and due to their extremely concentrated electr...

Page 9: ...list in order to ensure the safety of the product 7 Cells and batteries must be recycled and kept separate from residual waste Rechargeable batteries and normal batteries that contain lead mercury or...

Page 10: ...de Schwarz website Instrucciones de seguridad elementales Es imprescindible leer y cumplir las siguientes instrucciones e informaciones de seguridad El principio del grupo de empresas Rohde Schwarz co...

Page 11: ...guridad antes de usar el producto y respetarlas durante el uso del producto Deber n tenerse en cuenta todas las dem s informaciones de seguridad como p ej las referentes a la protecci n de personas qu...

Page 12: ...ducto se emplea de forma sin nima el t rmino CUIDADO Las palabras de se al corresponden a la definici n habitual para aplicaciones civiles en el rea econ mica europea Pueden existir definiciones difer...

Page 13: ...la tensi n preseleccionada en el producto coincida con la de la red de alimentaci n el ctrica Si es necesario modificar el ajuste de tensi n tambi n se deber n cambiar en caso dado los fusibles corre...

Page 14: ...efectuadas por un electricista especializado 13 En el caso de dispositivos fijos que no est n provistos de fusibles interruptor autom tico ni otros mecanismos de seguridad similares el circuito de ali...

Page 15: ...las personas con marcapasos pueden correr peligro a causa de la radiaci n electromagn tica El empresario operador tiene la obligaci n de evaluar y se alizar las reas de trabajo en las que exista un ri...

Page 16: ...es conductores No deben extraerse las celdas o bater as de sus embalajes originales hasta el momento en que vayan a utilizarse 4 Las celdas o bater as no deben someterse a impactos mec nicos fuertes i...

Page 17: ...ci n para los fabricantes dentro de la UE Para desechar el producto de manera respetuosa con el medio ambiente dir jase a su servicio de atenci n al cliente de Rohde Schwarz 3 Si se trabaja de manera...

Page 18: ...uality management system standards The Rohde Schwarz quality management system is certified according to standards such as ISO9001 and ISO14001 Environmental commitment Energy efficient products Conti...

Page 19: ...ument up to date and to be informed about new application notes related to your instrument please send an e mail to the Customer Support Center stating your instrument and your wish We will take care...

Page 20: ...Contents R S AMS32 K31 4 User Manual 1175 6678 02 01...

Page 21: ...for the R S CMW500 Extension to other radio technologies is planned The test cases implemented in R S AMS32 for evaluation of the OTA performance of a MIMO receiver are based on the MIMO OTA test plan...

Page 22: ...EPRE energy per resource element of the reference signal see chap ter 2 1 2 2 Communication Settings on page 11 With a properly calibrated test setup the powers of the horizontal and the vertical sig...

Page 23: ...e Setup In the Hardware Setup dialog you can select the desired test case and call the R S CMW500 LTE driver configuration dialog in order to perform basic RF configurations Access File Hardware Setup...

Page 24: ...e linked to the antenna connector for the horizontal polarization HOR the RF Output 2 to the vertical one VER The external attenuation of the RF Output 2 does not appear as a configurable value it is...

Page 25: ...oard shortcut Ctrl E or EMC32 Explorer Open Test Template In the Hard ware Setup Open dialog opened select New OTA Auto Test and click OK Select your OTA Test Method Sensitivity Mobile Phone as shown...

Page 26: ...er 2 1 1 Hardware Setup on page 7 Access General Settings button in the OTA Auto Test Template dialog see fig ure 2 3 In general you will have to select your Hardware Setup and specify the Mobile Phon...

Page 27: ...he RS EPRE energy per resource element of the reference signal defines all downlink physical channel levels of the R S CMW500 A sensitivity measurement involves repea ted BLER measurements at variable...

Page 28: ...sity mode select TX Diversity as a transmission scheme and to configure a low order robust modulation scheme typically QPSK with a low transport block size index For detailed information about the com...

Page 29: ...4 Fading Settings The Fading Settings dialog shows the parameters of the static channel model that the R S CMW500 uses for the MIMO tests Static Channel Model with Communication Tester must be selecte...

Page 30: ...21 The four phases Ph11 Ph22 can be defined independently in multiples of 15 degrees With disabled channel model the two downlink data streams are not cross correlated h12 h21 0 For detailed informati...

Page 31: ...p settings for single antenna MIMO OTA tests correspond to the loop settings for SISO tests Click OK to confirm your settings and return to the OTA Auto Test Template dialog 2 2 Test Run Once the test...

Page 32: ...Evaluation and Reporting During a test run the measured sensitivity thresholds or effective isotropic sensitivities EIS i e the LTE downlink levels RS EPRE at which the BLER crosses the specified thre...

Page 33: ...ation or printout Reports Report Set ups if defined and Result Tables A MIMO OTA test yields one graphics file and one result table file for each measured channel The file names contain the polarizati...

Page 34: ...ditional results A 3D graph for each channel shows the measured sensitivity thresholds in dBm over the full sphere Fig 2 5 Example of a 3D graph The cumulative distribution function CDF of the sensiti...

Page 35: ...e of them was found to be 106 dBm The lower the recorded sensitivity threshold levels the better the EUT s MIMO per formance The steeper the CDF curve the more uniform the antenna performance The Avg...

Page 36: ...OTA Options and check Correct LTE TIS power level for EPRE offset in the Test Control tab of the dialog opened You can also re calculate the CDF results of an exisiting test in order to convert the le...

Page 37: ...the test antenna The purpose of this dual antenna test is to determine the performance of the UE when high data rates are streamed under good channel conditions In addition to the sensitivity thresho...

Page 38: ...smission scheme and to configure a high order modulation scheme typically 64QAM with a high transport block size index See chapter 3 1 2 2 Communication Settings on page 25 5 In the Fading Settings su...

Page 39: ...irst RF output connector of the R S CMW500 must supply both vertical antenna connectors the second RF output con nector both horizontal antenna connectors An RF switch unit is required for this test s...

Page 40: ...le Phone as shown below Fig 3 2 OTA Auto Test Template dialog default configuration For a new dual antenna MIMO OTA test you may typically have to open the General Settings dialog to select your hardw...

Page 41: ...figure 2 4 The Cell Setup parameters are identical to the single antenna test case see chap ter 2 1 2 2 Communication Settings on page 11 In the Connection tab of the driver configuration dialog you...

Page 42: ...ected parameter combinations however both antennas are positioned at a common Azimuth angle and their elevations polar angles are coupled as described below A restricted number of measured Radio Chann...

Page 43: ...automatic position control The value range of the secondary elevation is the positioning range of the positioner associated to the secondary antenna in the hardware setup Typically this should be the...

Page 44: ...initialize the test 2 Use the Play Pause and Stop buttons in the test control toolbar at the bottom of the R S AMS32 main application window to control test execution 3 Observe the results as they ap...

Page 45: ...final col umn holding the measured value for each position defined by the first four fields in the row The polarization combination is indicated by the file name At the end of the test run when all t...

Page 46: ...elow each of the colored curves shows the CCDF for a specific downlink level Fig 3 4 Example of a CCDF graph According to the test case specification the CCDF serves as the overall figure of merit for...

Page 47: ...o the subcarrier spacing dBm 15 kHz values or to the full cell bandwidth dBm 10 MHz values You can switch the scale as described in chapter 2 3 Result Evaluation and Reporting on page 16 In addition t...

Page 48: ...test F FDD Frequency division duplex LTE technology L LTE Long term evolution radio technology M MS Mobile phone mobile station O OTA Over the air tests R RF Radio frequency RS EPRE Energy per resour...

Page 49: ...enna test case 26 single antenna test case 14 LTE Signaling 5 M Measurement Settings 12 MIMO OTA test plan 5 N Noise limited OTA performance 6 O Options required R S AMS32 5 R S CMW500 5 OTA Auto Test...

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