Anritsu MG3710A Application Note
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Anritsu MG3710A Application Note

W-lan mimo rx test using vector signal generator
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Application Note
W-LAN MIMO Rx Test
using Vector Signal Generator
MG3710A
Vector Signal Generator

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Summary of Contents for Anritsu MG3710A

  • Page 1 Application Note W-LAN MIMO Rx Test using Vector Signal Generator MG3710A Vector Signal Generator...

  • Page 2: Table Of Contents

    Maximum Input Level ..............................8 W-LAN MIMO Rx Test using Vector Signal Generator ....................9 W-LAN 2x2 MIMO Rx Sensitivity Test using Anritsu MG3710A Vector Signal Generator ......... 11 Creating W-LAN IEEE802.11n Signal with WLAN IQproducer ................12 Outputting Signal from Vector Signal Generator..................... 14 Synchronizing Signals between Ports ........................

  • Page 3: Introduction

    This application note is targeted at engineers designing and evaluating W-LAN modules and final products; it explains how to perform evaluation tests of W-LAN appliance Rx characteristics in a MIMO environment using the Anritsu MG3710A Vector Signal Generator and IQproducer tool.

  • Page 4: Outline Of Mimo

    Rx Antenna 0 Stream 0 Channels Data Stream A Data Series A MIMO MIMO Signal Signal Stream 1 Data Stream B Data Series B Generator Separator Rx Antenna 1 Tx Antenna 1 Fig. 2. 2 x 2 MIMO System Block Diagram MG3710A-E-F-5-(1.00)
  • Page 5 (propagation model) of each system and the correlation is changed due to changes in the signal amplitude and phase caused by various objects present in the propagation path through free space. This so-called fading phenomenon is closely related to MIMO system performance. MG3710A-E-F-5-(1.00)

  • Page 6: W-Lan Ieee802.11N And Mimo

    QPSK 52.0 57.8 108.0 120.0 QPSK 78.0 86.7 162.0 180.0 16QAM 104.0 115.6 216.0 240.0 16QAM 156.0 173.3 324.0 360.0 64QAM 208.0 231.1 432.0 480.0 64QAM 234.0 260.0 486.0 540.0 64QAM 260.0 288.9 540.0 600.0 BPSK R： Coding Rate MG3710A-E-F-5-(1.00)
  • Page 7 64QAM 16QAM 16QAM 16QAM 175.5 195.0 364.5 64QAM 64QAM QPSK QPSK 173.3 64QAM 64QAM 16QAM QPSK 175.5 195.0 364.5 64QAM 64QAM 16QAM 16QAM 216.7 64QAM 64QAM 64QAM QPSK 216.7 64QAM 64QAM 64QAM 16QAM 214.5 238.3 445.5 R： Coding Rate MG3710A-E-F-5-(1.00)

  • Page 8: W-Lan Ieee802.11N Rx Test

    Table 4, and the signal On/Off ratio must be at least 50%. This test is performed using a packet length of 4096 octets with BCC error correction, an MCS value from 0 to 31, a GI length of 800 ns, and STBC disabled. MG3710A-E-F-5-(1.00)

  • Page 9: Maximum Input Level

    This test input signals of the following level to each antenna of the receiver and confirms that the PER does not exceed 10%. The test uses a packet length of 4096 octets and supports any modulation method. Table 6. Maximum Input Level Band Max. Input Level [dBm] –30 2.4 GHz –20 5 GHz MG3710A-E-F-5-(1.00)

  • Page 10: W-Lan Mimo Rx Test Using Vector Signal Generator

    Anritsu MG3710A Vector Signal Generator for output. Using the IQproducer software in combination with the all- in-one, dual-RF port MG3710A makes it easy support configuration of a cost-effective test environment for 2 x 2 MIMO W-LAN signals with fading. MG3710A-E-F-5-(1.00)
  • Page 11 IQproducer waveform generation software. Only a single vector signal generator with two RF ports is used as the measuring instrument. A faded signal is output directly from the MG3710A and the signal pattern is created using the IQproducer pattern generation software.

  • Page 12: W-Lan 2X2 Mimo Rx Sensitivity Test Using Anritsu Mg3710A Vector Signal Generator

     Anritsu MX370111A WLAN IQproducer (hereafter WLAN IQproducer)  Anritsu MX370107A Fading IQproducer (hereafter Fading IQproducer)  Other necessary cables and connectors The MG3710A firmware version must be 2.01.00 or newer with IQproducer version 14.01 or newer. MG3710A-E-F-5-(1.00)

  • Page 13: Creating W-Lan Ieee802.11N Signal With Wlan Iqproducer

    Creating W-LAN IEEE802.11n Signal with WLAN IQproducer This section explains the basic test and how to create the W-LAN signal pattern. [Procedure: Creating W-LAN Signal] Start IQproducer on the MG3710A. The IQproducer procedure is described below. Select [WLAN] at the System (Non-Cellular) tab.
  • Page 14 [_0] and [_1] is appended to each file name. Fig. 8. Pattern File Generation Screen 12. Press [OK] to create the files. The files are output to the file paths [C:\Anritsu\MG3710A\User Data\Waveform\WLAN] and [C:\Anritsu\MG3710A\User Data\Waveform\WLAN_C] on the MG3710A hard disk. MG3710A-E-F-5-(1.00)

  • Page 15: Outputting Signal From Vector Signal Generator

    [Procedure: Selecting Waveform Pattern to Load] Press the [SG1] key at the MG3710A to start the SG1 operation. (Press the [SG2] key for SG2.) Press the [Load] key. Move the scrollbar to show the bottom of [Packages] at the left side of the screen and select the [WLAN] package name.

  • Page 16: Synchronizing Signals Between Ports

    For the method to minimize the phase and timing differences between the RF ports of the MG3710A, refer to the application note entitled "Adjusting MIMO Phase Coherence using Vector Signal Generator "(Doc. No.: MG3710A- E-F-3).
  • Page 17 Return to the preceding Start/Frame Trigger Key function menu and press [F8] Trigger to start synchronization. Figure 11 shows the waveform at the signal analyzer when the Frame Count value, or the number of sent packets, is set to [10]. Ten bursts are observed. Fig. 11. Time Domain Measurement when 10 Packets Sent MG3710A-E-F-5-(1.00)

  • Page 18: Adding Fading Effect To W-Lan Ieee802.11N Signal

    Adding Fading Effect to W-LAN IEEE802.11n Signal This section explains how to add fading effects to the W-LAN signal pattern. [Procedure] Start IQproducer at the MG3710A. The IQproducer procedure is described below. Select [Fading] at the General Purpose tab. The Fading IQproducer is described below.
  • Page 19 Outputting Signal from Vector Signal Generator for how to output the created waveform pattern from the MG3710A. The above procedure is the same for conditions 4 and 5. Use Table 14 and Table 15 for the correlation matrix in step 15.

  • Page 20: Receiving At W-Lan Appliance

    This application note has introduced a quantitative method for evaluating the MIMO Rx performance of a W-LAN appliance using the Anritsu MG3710A Vector Signal Generator. Using the test examples introduced in this note, users should be able to determine the detailed characteristics of W-LAN appliances by changing and adding test conditions.
  • Page 21 Note MG3710A-E-F-5-(1.00)
  • Page 22 No. 1 Science Museum Road, Tsim Sha Tsui East, Anritsu A/S (Service Assurance) Phone: +55-11-3283-2511 Kowloon, Hong Kong, P.R. China Fax: +55-11-3288-6940 Anritsu AB (Test & Measurement) Phone: +852-2301-4980 Fax: +852-2301-3545 • Kay Fiskers Plads 9, 2300 Copenhagen S, Denmark Mexico •...

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