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System Overview

R&S

SMW200A

Getting Started 1412.9220.02 ─ 21

7.2.4

Generation of an EUTRA/LTE 8x2 MIMO Signal for UE
Tests

The block diagram in this example depicts the generation of an EUTRA/LTE test
signal in a 8x2 MIMO scenario, for example for UE tests. The instrument uses a
coupled internal baseband source to generate all required baseband signals.

Applications Examples of the R&S

SMW

Содержание SMW200A

Страница 1: ...R S SMW200A Vector Signal Generator Getting Started Getting Started Version 21 1412922002 D2...

Страница 2: ...de schwarz com 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 1412 9220 02 Version 21...

Страница 3: ...chures 12 3 8 Release Notes and Open Source Acknowledgment OSA 13 3 9 Application Notes Application Cards White Papers etc 13 4 Preparing for Use 15 4 1 Putting into Operation 15 4 1 1 EMI Suppression...

Страница 4: ...Knob 35 Navigation Keys 35 Display Keys 35 5 1 3 Connectors 36 5 2 Rear Panel Tour 38 5 2 1 Connectors 40 6 Trying Out the Instrument 47 6 1 Generating an Unmodulated Carrier 48 6 2 Generating a Digi...

Страница 5: ...8 Analog I Q Output I Q Analog Blocks 89 7 1 9 RF and Analog Modulations RF Blocks 89 7 2 Applications Examples of the R S SMW 90 7 2 1 Transmit Diversity Test MISO Scenario 91 7 2 2 Receive Diversity...

Страница 6: ...cs 103 8 4 Accessing the Functionality 105 8 5 Entering Data 106 8 5 1 Entering Numeric Parameters 107 8 5 2 Entering Alphanumeric Parameters 107 8 5 3 Undo and Redo Actions 108 8 6 Getting Informatio...

Страница 7: ...e and laboratory environments Use the R S SMW only for its designated purpose Observe the operating conditions and performance limits stated in the data sheet Where do I find safety information Safety...

Страница 8: ...Safety Information R S SMW200A 8 Getting Started 1412 9220 02 21...

Страница 9: ...2 11a b g n j p ac ad ax Generating signals for radar module and receiver tests Versatile configuration from single path vector signal generator to multichan nel MIMO receiver tester Optional integrat...

Страница 10: ...Key Features R S SMW200A 10 Getting Started 1412 9220 02 21...

Страница 11: ...tware options are provided for download Base unit manual Contains the description of all instrument modes and functions It also pro vides an introduction to remote control a complete description of th...

Страница 12: ...gistered users on the global Rohde Schwarz information system GLORIS https gloris rohde schwarz com 3 5 Instrument Security Procedures Deals with security issues when working with the R S SMW in secur...

Страница 13: ...nd describe the firmware installation The open source acknowledgment document provides verbatim license texts of the used open source software See www rohde schwarz com firmware smw200a 3 9 Applicatio...

Страница 14: ...Documentation Overview R S SMW200A 14 Getting Started 1412 9220 02 21 Application Notes Application Cards White Papers etc...

Страница 15: ...ns provided in the data sheet to prevent personal injury or damage to the instrument Read and observe the basic safety instructions provided with the instrument in addition to the safety instructions...

Страница 16: ...the data sheet In particular ensure the following All fan openings are unobstructed and the airflow perforations are unim peded A minimum distance of 10 cm to other objects is recommended The instrum...

Страница 17: ...ncluded in the delivery Check the R S SMW for any damage If the contents are damaged immediately contact the carrier who delivered the package Packing material Retain the original packing material If...

Страница 18: ...ition standing on its feet or with the support feet on the bottom extended Risk of injury if feet are folded out The feet can fold in if they are not folded out completely or if the instrument is shif...

Страница 19: ...eed 500 N It is best if all instruments have the same dimensions width and length If you need to stack smaller instruments on the top the overall load imposed on the lowest instrument must not exceed...

Страница 20: ...ply Connect the R S SMW to the AC power source using the supplied power cable Note Since the instrument is designed in compliance with standard EN 61010 1 safety class I it must only be connected to a...

Страница 21: ...is in standby mode main AC power switch is in position I The standby power mode keeps the power switch circuits and the oven controlled crystal oscillator OCXO active In this state it is safe to swit...

Страница 22: ...er You can leave the AC power on permanently Switching off is required only if the instrument must be disconnected from all power supplies 4 1 7 Functional Check When the instrument is switched on it...

Страница 23: ...t menu Preset of the settings belonging to a digital standard or associated with one dialog Most of the dialog boxes provide a special Set to Default function that resets the settings associated to th...

Страница 24: ...d Software Options A list with hardware and firmware information is displayed 3 Check the availability of the hardware options as indicated in the delivery note For an overview of the available option...

Страница 25: ...thernet LAN local area network Provided the appropriate rights have been assigned by the network administrator the interface can be used for example To transfer data between a controller and the instr...

Страница 26: ...IP Address in the R S SMW user manual for information on how to assign the address man ually To set up a network LAN connection Risk of network failure Consult your network administrator before perfo...

Страница 27: ...poor quality or failures in the auto negotiation process can cause network connection failures If the network connection to the instrument fails check the network infra structure and contact your netw...

Страница 28: ...Preparing for Use R S SMW200A 28 Getting Started 1412 9220 02 21 Setting Up a Network LAN Connection...

Страница 29: ...ecifications of the interfaces refer to the data sheet 5 1 Front Panel Tour This section provides an overview of the control elements and connectors on the front panel of the R S SMW On the rear panel...

Страница 30: ...1 Touchscreen The block diagram and the most important settings are displayed on the screen on the front panel Additionally the screen display provides status and setting information and allows you t...

Страница 31: ...o be tapped on the screen to trigger the same behavior Using the touchscreen the following tasks among others can be performed by the tap of your finger Changing a setting Selecting new settings Scrol...

Страница 32: ...leaning the screen see the Maintenance chapter in the R S SMW user manual 5 1 2 Keys 5 1 2 1 Utility Keys The utility keys cause the R S SMW to return to a defined instrument state and provide informa...

Страница 33: ...2 Function keys Function key Assigned functions FREQ Activates frequency entry 1 LEVEL Activates level entry 1 Diagram Brings the block diagram to the foreground Active dialogs are minimized RF ON OFF...

Страница 34: ...C key Closes all kinds of dialog boxes if the edit mode is not active Quits the edit mode if the edit mode is active In dialog boxes that contain a Cancel button it activates that button For Edit dial...

Страница 35: ...or tables Table 5 4 Navigation keys Type of key Description Up Down Key The Up and the Down key does the following In a numeric edit dialog box increase or decrease the instru ment parameter In a lis...

Страница 36: ...ectors and various others interface connectors are on the front panel I Q I Q Bar I and Q inputs for external analog modulation signal directly fed into the I Q mod ulator One pair of I and Q inputs a...

Страница 37: ...nectors USER connector Direction Default assigned signal 1 Output Baseband A Marker 1 2 Output Baseband A Marker 2 3 Input Global Trigger 1 A dedicated LED indicates the connector status Green an inpu...

Страница 38: ...lication note 1MA99 If your instrument is equipped with a test port adapter refer also to 1MA100 The application notes are available on the Internet and provide additional informa tion on care and han...

Страница 39: ...drive 10 11 Display Port DVI connectors 12 LAN connectors 13 USB USB Device connectors 14 AC power supply connection and main power switch 15 Board designation CODER FADER BBMM 16 T M C and T M conne...

Страница 40: ...on the FADER board are provided for future use 5 ADV DATA CTRL connectors 6 T M C and T M connectors 7 ADV TRIG and ADV CLK connectors 8 EXT x connectors 9 I Q I Q Bar connectors 5 2 1 Connectors I Q...

Страница 41: ...oth paths INST TRIG x Input for external trigger of sweeps and list mode USER x Multipurpose connectors The input output signal has to be defined The Table 5 8 lists the signals assigned to the USER x...

Страница 42: ...nt is in operation leads to data loss or even instrument damage Do not remove the hard disk during operation Display Port DVI Provided for future use LAN The LAN interface can be used to connect the R...

Страница 43: ...he par ticular baseband 2 5 Input Trigger Local trigger signal for the particular baseband 3 6 Output Marker 3 Marker output signal from the particular baseband Table 5 10 Default configuration of the...

Страница 44: ...ny of the two inputs can be used for path A and path B LF OUT x Option R S SMW B13 B13T Output for internal LF generator signal Note The output of the internal LF signal and the analog I Q signal use...

Страница 45: ...put of high speed digital I Q signals for example from and to Rohde Schwarz instruments The interfaces require the options listed in Table 5 12 For more information see data sheet Table 5 12 Overview...

Страница 46: ...old the QSFP plug by its panes The release tab must be upwards oriented Insert it in the HS DIG I Q cage and push it To disconnect the cable Do not pull the cable itself Puling the cable can damage th...

Страница 47: ...he internal baseband and reference signal so you do not need any additional signal source More complex signal generation tasks however require an instrument equipped with additional options and or ext...

Страница 48: ...anel press the PRESET key to start out in a defined instrument configuration 2 Set the frequency a On the Status Bar tap the A Freq field b On the on screen keypad enter 1 955 and press the GHz key Th...

Страница 49: ...he same task you can use other hot spots in the block diagram the provided functions under the RF block or the function front panel keys Try out the following On the Status Bar and in the block diagra...

Страница 50: ...Chapter 8 Instrument Control on page 97 The 1 95 GHz signal is output at the RF A connector at the front panel of the R S SMW Connect RF A of the R S SMW to a signal analyzer for example R S FSW to di...

Страница 51: ...s example is a base unit The initial situation is not the instrument s preset state but rather the configuration described in Chapter 6 1 Generating an Unmodulated Carrier on page 48 1 In the block di...

Страница 52: ...tab and observe the used Modulation Type Figure 6 3 Display of the used modulation type The instrument activates automatically I Q Mod A uses the internal trigger and clock signals and generates a WCD...

Страница 53: ...r test DUT and or other measurement equipment As a rule whenever a test setup requires two or more devices provide them with a common reference frequency Some test setups require control of the signal...

Страница 54: ...54 2 Configure Baseband A to use this external global trigger signal as trigger source See To reconfigure the trigger settings on page 57 3 Connect the instrument and the external trigger source See...

Страница 55: ...ger and clock signals and the default map ping of the marker signals to the connectors 2 To access the related connector settings perform one of the following Select Global Connector Settings Tap the...

Страница 56: ...r Global Connector Settings In the current mapping the three global connectors USER x on the front panel are configured as follows Marker 1 2 are output at the USER 1 2 connectors The USER 3 connector...

Страница 57: ...m select Baseband Misc Custom Digital Mod Trigger In 2 Select the following settings a Mode Armed Auto b Source External Global Trigger 1 The instrument expects an external global trigger event In thi...

Страница 58: ...USER 3 connector of the R S SMW see Figure 6 6 RF INPUT REF OUT Rear Panel REF IN RF A Reference Signal INPUT TRIGGER Global Trigger 1 External Trigger Source USER 3 Figure 6 6 Simplified representati...

Страница 59: ...ng an external trigger source the DUT can also sends for example a frame trigger signal to the R S SMW The R S SMW acts still as the signal source 2 Use suitable cables to connect the RF A B and REF O...

Страница 60: ...ation symbol This example extends further the configurations performed in Chapter 6 2 Gen erating a Digitally Modulated Signal on page 51 We assume a default connector mapping see Figure 6 5 In this e...

Страница 61: ...e default state of the instrument standard system configuration mode The R S SMW provides the I Q Stream Mapper function to route and distribute each of the generated I Q signals streams to any of the...

Страница 62: ...signal path use one of the alternatives In the block diagram select Baseband B block and drag drop it to the first path Fading A block or AWGN A block depending on the options installed on your instru...

Страница 63: ...Misc Custom Digital Mod select Set acc to standard 3GPP FDD and enable Custom Digital Modu lation State On 4 To apply frequency and power offsets to the signals select Baseband B Baseband Offsets a En...

Страница 64: ...h a frequency offset on both paths and a path gain on path B Figure 6 8 Block diagram Generating a composed signal stream A To enable simultaneous signal generation in both basebands the R S SMW coupl...

Страница 65: ...utput connectors the analog RF A and I Q I Q OUT 1 connectors and the digital I Q output connectors DIG I Q BBMM1 2 To reconfigure the mapping tap a matrix entry for example disable the output of stre...

Страница 66: ...pability refer to chapter Signal Routing and System Configuration in the user manual 6 6 Verifying the Generated Signal with the Graph ics Display It is often useful to check the spectra of the config...

Страница 67: ...ng the Output Connectors on page 61 To access the graphical signal display functionality Perform one of the following a Select Taskbar System Configuration Graphics b On the Taskbar tap the wave icon...

Страница 68: ...d 1412 9220 02 21 A new thumbnail minimized view indicating the active diagram appears in the Taskbar 4 Press the thumbnail graphic The graphic enlarges and the diagram is displayed in a normal size V...

Страница 69: ...n works like the two finger pinching for magni fying images on your cell phone 6 In the Power Spectrum dialog select Configure to return to the Graphics Configuration dialog Close the Graphics Configu...

Страница 70: ...file To save the instrument settings to a file We assume a test configuration as described in Chapter 6 5 Routing the Signal through the Instrument and Defining the Output Connectors on page 61 1 Pre...

Страница 71: ...u can restore the settings to the instrument at any time using the settings file 1 Press the PRESET button to restore the default instrument settings so you can check that the saved user settings are...

Страница 72: ...h values different to their preset val ues When you load a file to your instrument you may do not have enough infor mation on the changed settings In such case it is useful to visualize all parameters...

Страница 73: ...communication and wireless standards like WCDMA EUTRA LTE or WLAN to name a few This example uses the digital standard EUTRA LTE to introduce the way you can access and interact with the instrument an...

Страница 74: ...he EUTRA LTE dialog appears and displays the general settings provided for the digital standard As in the user interfaces of all digital standards the EUTRA LTE dialog is divided into several tabs The...

Страница 75: ...E TM A standard File Select function enables you to select form files with prede fined settings Tip On the front panel press the HELP key to retrieve detailed information on the current settings and o...

Страница 76: ...rument R S SMW200A 76 Getting Started 1412 9220 02 21 Close the dialog 6 On the Status Bar tap the Freq and Lev fields and enter new values for example 2 143 GHz and 20 dBm Select RF A On Generating a...

Страница 77: ...ou can configure complex configurations with up to 8 Tx or Rx antennas or up to two stand alone 2x2 MIMO systems e g 8x2 MIMO or LTE A carrier aggregation with 2x2 MIMO This example does not cover the...

Страница 78: ...ystem Configuration b In the block diagram select Fading MIMO System Configuration c In the block diagram select I Q Stream Mapper and select the Fading Baseband Configuration tab The System Configura...

Страница 79: ...in infor mation on the current setup The tab comprises the additional settings provided to simplify the configura tion of connected instruments like configuring the connectors establishing a connectio...

Страница 80: ...IMO scenarios 2 Current signal routing 2x2 MIMO configuration 3 Separated and coupled baseband sources 4 Simplified preview diagram of the particular configuration 2 Leave all further settings i e the...

Страница 81: ...e basebands automatically for example the mapping of the transmitting antennas to the basebands 2 In the block diagram select Fading On The default Standard Delay fading profile is applied 3 On the St...

Страница 82: ...generation of scheduled data further configurations are required these configurations are however outside the scope of this description For further information refer to the user manual EUTRA LTE Digi...

Страница 83: ...of different applications Both RF paths can be equipped with one of the available frequency options with different upper frequency limit The baseband section of the R S SMW is fully digital It contain...

Страница 84: ...the second one an advanced configuration with more abstract representation In this classic representation the block diagram displays all blocks for that the required hardware and software options are...

Страница 85: ...e examples see also Chapter 7 2 Applications Examples of the R S SMW on page 90 The cross reference between the installed options and the displayed set tings The Table 7 1 is an excerpt of the availab...

Страница 86: ...cond option R S SMW K18 RF A R S SMW B103 B106 RF B R S SMW B203 B206 7 1 2 Internal Baseband Source Baseband Blocks The Baseband block represents the source of the baseband signals base bands This fu...

Страница 87: ...ital baseband inputs and outputs can be used together with other Rohde Schwarz instruments like signal generators signal analyzers the digital interface module R S EX IQ BOX or the R S CMW500 Radio Co...

Страница 88: ...GPP dynamic fading configura tions moving propagation and birth death propagation and the fine delay fad ing configurations offering enhanced delay resolution The option R S SMW K72 extends the statis...

Страница 89: ...Blocks The I Q Output block represents the analog I Q output connectors This block is the access point to the settings of The analog I Q output signals The generated signal can be output as single end...

Страница 90: ...l baseband signals or in an analog wideband I Q operation Generation of test signals for diversity tests and MIMO scenarios The R S SMW enables you to generate test signals in versatile MIMO config ur...

Страница 91: ...Started 1412 9220 02 21 7 2 1 Transmit Diversity Test MISO Scenario The block diagram in this example depicts the generation of a test signal using both internal baseband generators and 1 RF output RF...

Страница 92: ...02 21 7 2 2 Receive Diversity Test SIMO Scenario The block diagram in this example depicts the generation of a test signal using one internal baseband generator Baseband A and distributing the signal...

Страница 93: ...ing of WCDMA Handover Two Cells The block diagram in this example depicts the generation of a test signal using both internal baseband generators and both RF outputs for example for hand over tests Th...

Страница 94: ...8x2 MIMO Signal for UE Tests The block diagram in this example depicts the generation of an EUTRA LTE test signal in a 8x2 MIMO scenario for example for UE tests The instrument uses a coupled internal...

Страница 95: ...MIMO each Component Carrier The block diagram in this example depicts the generation of an EUTRA LTE test signal with two component carriers intra band carrier aggregation and 2x2 MIMO fading each fo...

Страница 96: ...802 11ad Signal with 1 76 GHz Bandwidth The block diagram in this example depicts the generation of a WLAN 802 11ad test signal with 1 76 GHz bandwidth The instrument uses one internal wideband baseb...

Страница 97: ...rotary knob or an optional mouse and or keyboard The following description shows how to operate the instrument manually Remote control Create programs to automatize repeating settings tests and measur...

Страница 98: ...g to the destination block or Resizes a window dialog or graphic by dragging an edge or a corner of a window to the destination size Touch and swipe drag Scrolls through the contents of a display elem...

Страница 99: ...he touchscreen a mouse pointer in the display or a key on the instrument or on a keyboard 8 3 Understanding the Display Information The block diagram of the R S SMW displays all main settings and gene...

Страница 100: ...ost of the status buttons are virtual keys you can use to open a corresponding menu or dialog Underlined names are touch sensitive By touching them you can execute a setting or access the dialog or me...

Страница 101: ...the Stream Mapper you can see the functional blocks provided in the baseband domain After the stream mapper the analog section contains the digital to analog conversion and modulation to RF Legend Ite...

Страница 102: ...icons vary depend ing on the frequency Analog I Q signal connector input 7b Analog I Q signal connector output 7c Digital I Q signal connector input 7d Digital I Q signal connector output 7e 8 Stream...

Страница 103: ...atus bar shows the current remote control status 3 R S NRP Shows a connected external power sensor If the sensor is active the softkey background is blue 4 Graphics Shows that a signal is represented...

Страница 104: ...ge 106 Info line The Info line shows brief status information and error messages It appears when an event generates a message Key parameters indicated in tab labels Most dialogs are divided into tabs...

Страница 105: ...e touchscreen Displayed setting on the touchscreen that means block diagram and all set tings available in dialogs To open a dialog box Perform one of the following actions Tap the required block and...

Страница 106: ...ey to open the list c Press the Up Down keys to navigate to the required option in the list d Press the Enter key to select the marked option 8 5 Entering Data Some parameters have their own key on th...

Страница 107: ...not require a unit confirm the entered value by pressing Enter To enter values by using the front panel controls 1 Change the currently used parameter value by using the rotary knob or the Up Down ke...

Страница 108: ...tips give the value range of the parameter The context help provides functional description on a setting The general help explains a dialog box provides instructions and general information The tutori...

Страница 109: ...nc tions that are accessed via the corresponding buttons To open general help Press the yellow HELP key on the front panel If a dialog box is opened the help topic for the current tab is shown Other w...

Страница 110: ...nts Tree button to hide the contents tree Using the index 1 Select the Index button 2 Enter the first characters of the topic you are interested in The entries starting with these characters are displ...

Страница 111: ...Getting Started 1412 9220 02 21 The Tutorials dialog opens 3 Select File Load Predefined Tutorial 4 Tap on a tutorial from the list and confirm with Select If the file contains a description it is dis...

Страница 112: ...ve the information displayed in the Info line bottom of the display 1 Information on the performed action 2 Progress bar 3 Next Step confirms the execution of the step 4 Stop terminates the tutorial 8...

Страница 113: ...the tutorials as described in To start a tutorial in an interactive step by step mode on page 110 2 In the Tutorials dialog select Execution Mode Auto Looped 3 sec The configurations are performed au...

Страница 114: ...om a remote computer through a LAN connection While the instrument is in operation the instrument screen contents are displayed on the remote com puter and VNC provides access to all applications file...

Страница 115: ...lay 42 DVI 42 EFC 41 EXT x 44 GPIB 40 High speed digital IQ 45 I 36 40 44 I Bar 44 IEC IEEE 40 INST TRIG x 41 LAN 42 LF OUT x 44 LO IN 41 LO OUT 41 MARKER 43 Q 36 40 44 Q Bar 44 REF IN 41 REF OUT 41 R...

Страница 116: ...Hotspot 100 101 I Info line 103 Input connector 36 37 40 41 43 44 45 Instrument control 97 Instrument help 11 Instrument security procedures 12 K Key Access on a remote computer 114 Backspace 34 Diag...

Страница 117: ...19 Rack installation 40 Ready state 21 Release notes 13 Remote access see Remote operation from a computer 97 Remote connection Not working 27 Remote control 113 Remote operation 114 Reopen Tutorial 1...

Страница 118: ...Index R S SMW200A 118 Getting Started 1412 9220 02 21 V VNC Using in a LAN 114 W White papers 13...

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