Subscribe to Our Youtube Channel
Related Manuals for Rohde & Schwarz R&S AMS32-K31
Summary of Contents for Rohde & Schwarz R&S AMS32-K31
- Page 1 ® R&S AMS32-K31 MIMO OTA Performance Testing User Manual (;ÙÐÜ2) 1175.6678.02 ─ 01...
- Page 2 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 ●...
-
Page 3: Table Of Contents
® Contents R&S AMS32-K31 Contents 1 MIMO OTA Testing.................5 2 Noise-Limited OTA Performance in Transmit Diversity Mode...6 Configuration.........................6 2.1.1 Hardware Setup......................7 2.1.2 OTA Test Template......................9 2.1.2.1 Hardware Setup Selection....................10 2.1.2.2 Communication Settings....................11 2.1.2.3 Measurement Settings....................12 2.1.2.4 Fading Settings......................13 2.1.2.5 Loop Settings........................14 Test Run........................15 Result Evaluation and Reporting................16 3 Peak Performance in Spatial Multiplexing Mode ......21... - Page 4 Basic Safety Instructions Always read through and comply with the following safety instructions! All plants and locations of the Rohde & Schwarz group of companies make every effort to keep the safety standards of our products up to date and to offer our customers the highest possible degree of safety. Our products and the auxiliary equipment they require are designed, built and tested in accordance with the safety standards that apply in each case.
- Page 5 Basic Safety Instructions Symbol Meaning Symbol Meaning Warning! Hot surface Alternating current (AC) Protective conductor terminal Direct/alternating current (DC/AC) Ground Device fully protected by double (reinforced) insulation Ground terminal EU labeling for batteries and accumulators For additional information, see section "Waste disposal/Environmental protection", item 1.
- Page 6 Basic Safety Instructions Operating states and operating positions The product may be operated only under the operating conditions and in the positions specified by the manufacturer, without the product's ventilation being obstructed. If the manufacturer's specifications are not observed, this can result in electric shock, fire and/or serious personal injury or death. Applicable local or national safety regulations and rules for the prevention of accidents must be observed in all work performed.
- Page 7 Basic Safety Instructions 6. The product may be operated only from TN/TT supply networks fuse-protected with max. 16 A (higher fuse only after consulting with the Rohde & Schwarz group of companies). 7. Do not insert the plug into sockets that are dusty or dirty. Insert the plug firmly and all the way into the socket provided for this purpose.
- Page 8 Basic Safety Instructions 2. Before you move or transport the product, read and observe the section titled "Transport". 3. As with all industrially manufactured goods, the use of substances that induce an allergic reaction (allergens) such as nickel cannot be generally excluded. If you develop an allergic reaction (such as a skin rash, frequent sneezing, red eyes or respiratory difficulties) when using a Rohde &...
- Page 9 Basic Safety Instructions Batteries and rechargeable batteries/cells If the information regarding batteries and rechargeable batteries/cells is not observed either at all or to the extent necessary, product users may be exposed to the risk of explosions, fire and/or serious personal injury, and, in some cases, death.
- Page 10 Instrucciones de seguridad elementales 2. Waste electrical and electronic equipment must not be disposed of with unsorted municipal waste, but must be collected separately. Rohde & Schwarz GmbH & Co. KG has developed a disposal concept and takes full responsibility for take-back obligations and disposal obligations for manufacturers within the EU.
- Page 11 Instrucciones de seguridad elementales Se parte del uso correcto del producto para los fines definidos si el producto es utilizado conforme a las indicaciones de la correspondiente documentación del producto y dentro del margen de rendimiento definido (ver hoja de datos, documentación, informaciones de seguridad que siguen). El uso del producto hace necesarios conocimientos técnicos y ciertos conocimientos del idioma inglés.
- Page 12 Instrucciones de seguridad elementales Símbolo Significado Símbolo Significado Aviso: Cuidado en el manejo de dispositivos Distintivo de la UE para la eliminación por sensibles a la electrostática (ESD) separado de dispositivos eléctricos y electrónicos Más información en la sección "Eliminación/protección del medio ambiente", punto 2.
- Page 13 Instrucciones de seguridad elementales 1. Si no se convino de otra manera, es para los productos Rohde & Schwarz válido lo que sigue: como posición de funcionamiento se define por principio la posición con el suelo de la caja para abajo, modo de protección IP 2X, uso solamente en estancias interiores, utilización hasta 2000 m sobre el nivel del mar, transporte hasta 4500 m sobre el nivel del mar.
- Page 14 Instrucciones de seguridad elementales 6. Solamente está permitido el funcionamiento en redes de alimentación TN/TT aseguradas con fusibles de 16 A como máximo (utilización de fusibles de mayor amperaje solo previa consulta con el grupo de empresas Rohde & Schwarz). 7.
- Page 15 Instrucciones de seguridad elementales Funcionamiento 1. El uso del producto requiere instrucciones especiales y una alta concentración durante el manejo. Debe asegurarse que las personas que manejen el producto estén a la altura de los requerimientos necesarios en cuanto a aptitudes físicas, psíquicas y emocionales, ya que de otra manera no se pueden excluir lesiones o daños de objetos.
- Page 16 Instrucciones de seguridad elementales 2. El ajuste, el cambio de partes, el mantenimiento y la reparación deberán ser efectuadas solamente por electricistas autorizados por Rohde & Schwarz. Si se reponen partes con importancia para los aspectos de seguridad (p. ej. el enchufe, los transformadores o los fusibles), solamente podrán ser sustituidos por partes originales.
- Page 17 Instrucciones de seguridad elementales 3. Si se utiliza el producto dentro de un vehículo, recae de manera exclusiva en el conductor la responsabilidad de conducir el vehículo de manera segura y adecuada. El fabricante no asumirá ninguna responsabilidad por accidentes o colisiones. No utilice nunca el producto dentro de un vehículo en movimiento si esto pudiera distraer al conductor.
- Page 18 Qualitätszertifikat Certifi ed Quality System ISO 9001 Certificate of quality Certifi ed Environmental System ISO 14001 Certificat de qualité Sehr geehrter Kunde, Dear customer, Cher client, Sie haben sich für den Kauf eines You have decided to buy a Vous avez choisi d’acheter un Rohde &...
- Page 19 Customer Support Technical support – where and when you need it For quick, expert help with any Rohde & Schwarz equipment, contact one of our Customer Support Centers. A team of highly qualified engineers provides telephone support and will work with you to find a solution to your query on any aspect of the operation, programming or applications of Rohde &...
- Page 20 ® Contents R&S AMS32-K31 User Manual 1175.6678.02 ─ 01...
-
Page 21: Mimo Ota Testing
® MIMO OTA Testing R&S AMS32-K31 1 MIMO OTA Testing R&S AMS32 implements special dedicated tests for evaluating the OTA performance of receivers in MIMO mode. To configure and use these tests, option R&S AMS32-K31 must be installed and activated. There are many possible MIMO configurations. -
Page 22: Noise-Limited Ota Performance In Transmit Diversity Mode
® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Configuration 2 Noise-Limited OTA Performance in Transmit Diversity Mode This test case fundamentally consists in generating a two-stream signal in TX diversity mode, and transmitting these two streams simultaneously to the EUT through the two polarizations of the same cross-polarized measurement antenna (e.g. -
Page 23: Hardware Setup
® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Configuration 2. Select this hardware setup in the "General Settings" sub-dialog of an OTA test tem- plate. See c hapter 2.1.2.1, "Hardware Setup Selection", on page 10. 3. In the "Communication Settings" sub-dialog, configure the radio link as required. Take special care to select "TX Diversity"... - Page 24 ® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Configuration select "Sensitivity Horizontal" and "Sensitivity Vertical") as shown above. The test setup remains fixed during the entire measurement; the two streams of the LTE downlink signal from the R&S CMW500 are simultaneously fed to the two polarizations of the test antenna.
-
Page 25: Ota Test Template
® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Configuration 2.1.2 OTA Test Template In the "OTA Auto Test Template" dialog, you can configure your MIMO OTA test and store your settings to a template file which you may use repeatedly. Access: "File >... -
Page 26: Hardware Setup Selection
® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Configuration 2.1.2.1 Hardware Setup Selection In the "General Settings" dialog, you can select your previously configured hardware setup (see c hapter 2.1.1, "Hardware Setup", on page 7). Access: "General Settings" button in the "OTA Auto Test Template" dialog; see f ig- 2-3. -
Page 27: Communication Settings
® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Configuration 2.1.2.2 Communication Settings The R&S CMW500 LTE driver provides a configuration dialog for the basic properties of the LTE downlink signal of the R&S CMW500 ("Cell Setup" and "Connection" settings). Access: "Communication Settings"... -
Page 28: Measurement Settings
® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Configuration In the "Connection" tab of the driver configuration dialog, you can select the DL "Trans- mission Scheme" and the allocated DL and UL resource blocks. Check "Setup Connec- tion" to transfer your settings to the R&S CMW500. To measure in line with the test case "noise-limited OTA performance in transmit diversity mode", select "TX Diversity"... -
Page 29: Fading Settings
® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Configuration The "Target Value" is the BLER at which the sensitivity level is reached. The test case specification stipulates a 10 % target value. Click "OK" to confirm your settings and return to the "OTA Auto Test Template" dialog. 2.1.2.4 Fading Settings The "Fading Settings"... -
Page 30: Loop Settings
® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Configuration A left-click on the device symbol in the upper part of the dialog opens the R&S CMW500 LTE driver configuration dialog. With enabled static channel model, it is possible to select two magnitudes of the channel matrix elements, | h11 | and | h21 |. -
Page 31: Test Run
® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Test Run The test setup for the single-antenna MIMO OTA test is fixed, with no switching between polarizations, so there is no configurable "Polarization" loop. This simplifies the test result generation and reduces the number of graphs and result tables;... -
Page 32: Result Evaluation And Reporting
® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Result Evaluation and Reporting Click "OK" to create, save, and 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. - Page 33 ® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Result Evaluation and Reporting In addition to the polar graphs, the following information panes appear in the R&S AMS32 main application window. ● The "Test Components" explorer pane (docked to the left side of the window) shows the following files: "Graphics"...
- Page 34 ® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Result Evaluation and Reporting Report settings R&S AMS32 provides a wide range of settings for measurement reports. To change the default configuration, you can click the "Report Settings" button in the "OTA Auto Test Template"...
- Page 35 ® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Result Evaluation and Reporting measurement points or double-click in order to set markers and retrieve numeric results. Fig. 2-6: Example of a CDF graph According to the test case specification, the CDF serves as the overall figure of merit for the EUT.
- Page 36 ® Noise-Limited OTA Performance in Transmit Diversity Mode R&S AMS32-K31 Result Evaluation and Reporting Normalization of sensitivity threshold levels The levels in the CDF, Avg. Throughput, and CCDF graphs and tables are expressed in units of dBm/15 kHz, which corresponds to the normalization of the RS EPRE values (see ...
-
Page 37: Peak Performance In Spatial Multiplexing Mode
® Peak Performance in Spatial Multiplexing Mode R&S AMS32-K31 Configuration 3 Peak Performance in Spatial Multiplexing Mode This test case fundamentally consists in generating a two-stream signal in spatial multi- plexing mode, and transmitting these two streams simultaneously to the DUT through two different test antennas moving independently to different positions. -
Page 38: Hardware Setup
® Peak Performance in Spatial Multiplexing Mode R&S AMS32-K31 Configuration 2. Select this hardware setup in the "General Settings" sub-dialog of an OTA test tem- plate. See c hapter 3.1.2.1, "Hardware Setup Selection", on page 24. 3. In the "Loop Settings" sub-dialog, configure the sequence of angular positions to be accessed during the test. -
Page 39: Ota Test Template
® Peak Performance in Spatial Multiplexing Mode R&S AMS32-K31 Configuration Fig. 3-1: Hardware setup for dual-antenna tests After selection of the test setup, a previously loaded R&S "CMW500-LTE" driver appears in the yellow information field below the communication tester symbol (click "Extras > Device List..."... -
Page 40: Hardware Setup Selection
® Peak Performance in Spatial Multiplexing Mode R&S AMS32-K31 Configuration Access: "File > Test Template Open/New..." in the R&S AMS32 main dialog window (keyboard 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"... -
Page 41: Communication Settings
® Peak Performance in Spatial Multiplexing Mode R&S AMS32-K31 Configuration Access: "General Settings" button in the "OTA Auto Test Template" dialog; see f ig- 3-2. The settings are analogous to the single-antenna test case. The contents of the "OTA Auto Test Template"... -
Page 42: Measurement Settings
® Peak Performance in Spatial Multiplexing Mode R&S AMS32-K31 Configuration 3.1.2.3 Measurement Settings The "Measurement Settings" settings are analogous to the single-antenna test case; see c hapter 2.1.2.3, "Measurement Settings", on page 12. 3.1.2.4 Fading Settings The "Fading Settings" settings are analogous to the single-antenna test case; see c hap- ter 2.1.2.4, "Fading Settings", on page 13. - Page 43 ® Peak Performance in Spatial Multiplexing Mode R&S AMS32-K31 Configuration ● The polar angle of the second antenna ("Secondary Elevation)" is defined relative to the polar angle of the first antenna ("Primary Elevation)"; see "Secondary Elevation Loop Settings" below. The "Secondary Elevation Loop Settings" have the following effect: ●...
-
Page 44: Test Run
® Peak Performance in Spatial Multiplexing Mode R&S AMS32-K31 Test Run 3.2 Test Run Once the test template has been defined as outlined in the previous sections, a dual- antenna MIMO OTA test is performed in close analogy to the single-antenna test. The test run involves the following stages: 1. - Page 45 ® Peak Performance in Spatial Multiplexing Mode R&S AMS32-K31 Result Evaluation and Reporting Compared to the single-antenna test case, the number of polar graphs, graphics files, and result tables is multiplied by the number of measured polarization combinations. If all four combinations are measured, the number of results is quadrupled. Layout and contents of result tables The layout of the result tables (SNS_...
- Page 46 ® Peak Performance in Spatial Multiplexing Mode R&S AMS32-K31 Result Evaluation and Reporting Fig. 3-3: Example of an average throughput graph ● The complementary cumulative distribution function (CCDF) of the relative through- put values is calculated for all recorded downlink levels. "Relative throughput" denotes the measured throughput, divided by the maximum throughput of the cell.
- Page 47 ® Peak Performance in Spatial Multiplexing Mode R&S AMS32-K31 Result Evaluation and Reporting The lower the downlink level is at which a certain CCDF value is reached, the better is the UE’s MIMO performance. ● The "MIMO Report" contains the result tables, the CDF graph, the average through- put and CCDF graphs, and all 3D graphs.
-
Page 48: Glossary: Mimo Ota Testing
® Glossary: MIMO OTA Testing R&S AMS32-K31 Glossary: MIMO OTA Testing BLER: Block error rate CTIA: Cellular Telecommunications & Internet Association DL: Downlink EIS: Effective isotropic sensitivity (per single geometrical point) EUT: Equipment under test FDD: Frequency division duplex (LTE technology) LTE: Long term evolution (radio technology) MS: Mobile phone, mobile station OTA: Over-the-air (tests) -
Page 49: Index
® Index R&S AMS32-K31 Index Symbols 3D diagrams ..............18 Options required *.csv file ................20 R&S AMS32 ..............5 R&S CMW500 ............5 OTA Auto Test Template dual-antenna test case ..........23 Application note 1SP12 ............5 single-antenna test case ..........9 Average throughput ............
Need help?
Do you have a question about the R&S AMS32-K31 and is the answer not in the manual?
Questions and answers