Tektronix RSA3408A User Manual
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Tektronix RSA3408A User Manual

Tektronix RSA3408A User Manual

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User Manual
RSA3408A Option 27
3GPP Release 5 Downlink (HSDPA) Analysis
Software
071-1681-01
This document supports firmware version 3.10 and above.
www.tektronix.com

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  • Page 1 User Manual RSA3408A Option 27 3GPP Release 5 Downlink (HSDPA) Analysis Software 071-1681-01 This document supports firmware version 3.10 and above. www.tektronix.com...
  • Page 2 Copyright © Tektronix, Inc. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material.
  • Page 3 Warranty 2 Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product.

  • Page 5: Table Of Contents

    Scale Setting Range ..........B-1 Index RSA3408A Option 27 User Manual...
  • Page 6 Figure 2-24: ACK/NACK analysis ........2-49 RSA3408A Option 27 User Manual...
  • Page 7 Table B-1: Display format and scale ........B-1 RSA3408A Option 27 User Manual...
  • Page 8 List of Tables RSA3408A Option 27 User Manual...

  • Page 9: Preface

    Preface This manual provides operating instructions for the RSA3408A Real-Time Spectrum Analyzer Option 27 3GPP Release 5 Downlink (HSDPA) analysis software. About This Manual The manual consists of the following sections: Getting Started describes the overview of the 3GPP Release 5 analysis.
  • Page 10 Preface RSA3408A Option 27 User Manual...
  • Page 11 Getting Started...
  • Page 13 Getting Started The RSA3408A Option 27 3GPP Release 5 Downlink (HSDPA) analysis software enables modulation analysis of HSDPA (High Speed Downlink Packet Access) signals defined in 3GPP (3 Generation Partnership Project) Release 5 (“3GPP-R5”). Measurements may be performed on downlink QPSK and 16QAM or uplink BPSK signals.

  • Page 14: Analysis Definition

    Modulation accuracy: Measures EVM (Error Vector Magnitude), amplitude and phase errors, waveform quality, and origin offset for each channel. Measures PCDE (Peak Code Domain Error), amplitude, frequency, and phase errors; waveform quality; and origin offset for each time slot. RSA3408A Option 27 User Manual...
  • Page 15 Time slot Scrambling code Long or short. Number: 0 to 16,777,215 Modulation method for BPSK each channel Root-cosine with α = 0.22 (default). Baseband filter Can be set in the range of 0.0001 ≤α ≤1 RSA3408A Option 27 User Manual...
  • Page 16 If the level of DPCCH or the control part is much lower than (about 1/10 ) the level of the other channels (DPDCH or the data part), the analysis may not be performed accurately. RSA3408A Option 27 User Manual...

  • Page 17: Measurement Menu

    Code Power versus Time Slot Code Power versus Symbol Symbol Constellation Symbol EVM Symbol Eye Diagram Symbol Table Modulation Accuracy CCDF (Standard) * DL and UL represent downlink and uplink, respectively. Figure 1-1: Measurement menus for the 3GPP-R5 analysis RSA3408A Option 27 User Manual...
  • Page 18 For the CCDF (Complementary Cumulative Distribution Function) analysis in the Time mode, refer to the RSA3408A User Manual (Tektronix part number 071-1617-XX). If you are not familiar with the operation of the RSA3408A, refer to the NOTE. RSA3408A User Manual (Tektronix part number 071-1617-XX).
  • Page 19 Operating Basics...

  • Page 21: Downlink Analysis In The S/A Mode

    S/A → Standard... → 3GPP-R5-DL as shown in Figure 2-1. MODE Measure menu items Standard... 3GPP-R5-DL Channel Power ACLR Spectrum Emission Mask DEMOD Carrier Frequency TIME Figure 2-1: Downlink analysis measurement menu in the S/A mode RSA3408A Option 27 User Manual...

  • Page 22: Measurement Procedure

    Use the following procedure for a spectrum measurement in the S/A mode. For details on setting frequency, span, and amplitude, refer to the NOTE. RSA3408A User Manual (Tektronix part number 071-1617-XX). 1. Press the S/A key on the front panel. 2. Press the side key Standard... → 3GPP-R5-DL.

  • Page 23: Channel Power Measurement

    Nyquist or Root Nyquist. Range: 0.0001 to 1 (default: 0.5). Limits... Sets the pass/fail limit for the channel power measurement. When pressing this side key, the measurement limits editor appears. Refer to Editing the Measurement Limits on page 2-12 for more information. RSA3408A Option 27 User Manual...

  • Page 24: Figure 2-2: Channel Power Measurement

    Downlink Analysis in the S/A Mode Figure 2-2 shows an example of the channel power measurement. Channel Bandwidth Figure 2-2: Channel power measurement RSA3408A Option 27 User Manual...

  • Page 25: Aclr Measurement

    The ACLR (Adjacent Channel Leakage Power Ratio) measurement according to the 3GPP-R5 standard is based on the ACPR measurement function in the normal spectrum analysis. For the basics, refer to ACPR Measurement in the RSA3408A User Manual. The following settings are fixed according to the 3GPP-R5 standard: Span: 25 MHz Main channel measurement bandwidth (Main Chan BW): 3.84 MHz...

  • Page 26: Figure 2-3: 3Gpp-R5 Aclr Measurement

    Downlink Analysis in the S/A Mode Figure 2-3 shows an example of the ACLR measurement. Measured values are displayed in the lower part of the screen. Lower2 Lower1 Main Upper1 Upper2 Figure 2-3: 3GPP-R5 ACLR measurement RSA3408A Option 27 User Manual...

  • Page 27: Spectrum Emission Mask Measurement

    When pressing this side key, the measurement limits editor appears. Refer to Editing the Measurement Limits on page 2-12 for more information. Scroll Table. Scrolls the results table on screen using the general purpose knob. Step Size. Sets the step size for the Channel Bandwidth setting. RSA3408A Option 27 User Manual...

  • Page 28: Figure 2-4: Spectrum Emission Mask Measurement

    ■ Absolute peak value and Pass/Fail ■ Side (upper or lower) ■ Relative peak value and Pass/Fail ■ Start frequency of the zone ■ Stop frequency of the zone ■ MBW (Measurement Bandwidth (RBW)) Figure 2-4: Spectrum emission mask measurement RSA3408A Option 27 User Manual...

  • Page 29: Obw Measurement

    Limits... Sets the pass/fail limits for the OBW measurement. When pressing this side key, the measurement limits editor appears. Refer to Editing the Measurement Limits on page 2-12 for more information. Figure 2-5 shows an example of the OBW measurement. Occupied Bandwidth Figure 2-5: OBW measurement RSA3408A Option 27 User Manual...

  • Page 30: Ebw Measurement

    Measurement Level. Specifies how far down from the peak level the bandwidth is measured (see Figure 2-6). Range: –100 to –1 dB (default: –30 dB). Figure 2-6 shows an example of the EBW measurement. Emission Bandwidth Measurement Level Figure 2-6: EBW measurement 2-10 RSA3408A Option 27 User Manual...

  • Page 31: Carrier Frequency Measurement

    Range: 1 mHz to 1 MHz in a tenfold sequence (default: 1 Hz). Figure 2-7 shows an example of the carrier frequency measurement. Figure 2-7: Carrier frequency measurement RSA3408A Option 27 User Manual 2-11...

  • Page 32: Editing The Measurement Limits

    Limits Editor access it from the Limits... side key on the Meas Setup menu. Figure 2-8 shows the measurement limits editor for the 3GPP-R5 downlink analysis in the S/A mode. Figure 2-8: Measurement limits editor 2-12 RSA3408A Option 27 User Manual...

  • Page 33: Table 2-1: Measurement Limits Settings

    Band I, II, or III defined in 3GPP-R5, press the Default all limits to... side key and then select the band. Refer to Appendix A: Measurement Limit Defaults for information about the default settings of each measurement limit. RSA3408A Option 27 User Manual 2-13...

  • Page 34: Figure 2-9: Spectrum Emission Mask Measurement Limits Editor

    Edit SEM Offset Limits... side key, another limits editor for the spectrum emission mask measurement is displayed as shown in Figure 2-9. Zone A Zone A Figure 2-9: Spectrum emission mask measurement limits editor 2-14 RSA3408A Option 27 User Manual...
  • Page 35 –200 to 200 dBm Beginning Relative Limit Sets a relative level limit at Beginning Frequency. –200 to 200 dBc Ending Relative Limit Sets a relative level limit at Ending Frequency. –200 to 200 dBc RSA3408A Option 27 User Manual 2-15...
  • Page 36 Refer to Appendix A: Measurement Limit Defaults for information about the default settings of each measurement limit. 6. When you press the Rescale Graph side key, the graph is rescaled to match the set limits. 2-16 RSA3408A Option 27 User Manual...
  • Page 37 Load from LimitsA, Load from LimitsB, or Load from LimitsC. 4. To load limits from an existing file, select the file from the file list, and then press the Load File Now side key. RSA3408A Option 27 User Manual 2-17...
  • Page 38 Downlink Analysis in the S/A Mode 2-18 RSA3408A Option 27 User Manual...

  • Page 39: Downlink Analysis In The Demod Mode

    Figure 2-10: Downlink analysis measurement menu in the Demod mode The measurement in the Demod mode is based on the digital modulation analysis function. For the digital modulation analysis, refer to the RSA3408A User Manual. RSA3408A Option 27 User Manual...

  • Page 40: Measurement Procedure

    8.34 (for the span of 10 MHz) 4.17 (for the span of 5 MHz) 7. After acquiring measurement data, stop the data acquisition. If you are acquiring data in the continuous mode, press the RUN/STOP key. 2-20 RSA3408A Option 27 User Manual...
  • Page 41 9. Press the MEAS SETUP key on the front panel and set the measurement parameters. Refer to page 2-22 for details of the Meas Setup menu. 10. Set the analysis range in the overview. Refer to the RSA3408A User Manual for the details.

  • Page 42: Measurement Setup Menu

    Performs analysis for time slots in the analysis range. When you change settings of the parameters in the Meas Setup menu NOTE. described below, press the Analyze side key to perform the measurement for the modified settings. 2-22 RSA3408A Option 27 User Manual...
  • Page 43 Use SCH Part. Selects whether to include or exclude the SCH portion when calculating the code domain power. On. Calculates the code domain power by including the SCH portion. Off. Default. Calculates the code domain power by excluding the SCH portion. RSA3408A Option 27 User Manual 2-23...
  • Page 44 The error from the center frequency is shown on the Freq Error side key. Off. Sets the carrier frequency using Frequency Offset described below. Frequency Offset Sets the carrier frequency when Auto Carrier is selected to Off. Input the carrier offset from the center frequency. 2-24 RSA3408A Option 27 User Manual...

  • Page 45: Scale And Format Of View

    Time slot number in the radio frame SSCH (Secondary Synchronization Channel) SCG (Scrambling Code Group) Time slot number in the analysis range (0 is the last) Scrambling code number Figure 2-12: Time slot table RSA3408A Option 27 User Manual 2-25...
  • Page 46 This selection practically affects only the code domain power versus symbol view and the symbol EVM view. In the other views, it is meaningless. Off. Displays one time-slot selected by the Time Slot side key. On. Displays up to 15 time-slots in the main view. 2-26 RSA3408A Option 27 User Manual...
  • Page 47 On. Displays the SCH part. Symbol Rate... Sets the symbol rate for displaying symbol constellation: 960 k 480 k 240 k 120 k 60 k 30 k 15 k 7.5 k Composite The default is Composite for multi-rate. RSA3408A Option 27 User Manual 2-27...

  • Page 48: Code Domain Power

    Y Axis. Selects whether to represent the vertical axis (amplitude) with relative or absolute values. Relative. The vertical axis represents power relative to the total power of all channels. Absolute. The vertical axis represents absolute power of each channel 2-28 RSA3408A Option 27 User Manual...

  • Page 49: Figure 2-13: Code Domain Power Versus Short Code

    Short code number (Channel number at the symbol rate, modulation type) Marker readout Code domain power Time slot number in the radio frame Vertical Scale Vertical Start Horizontal Scale Horizontal Start Figure 2-13: Code domain power versus Short code RSA3408A Option 27 User Manual 2-29...

  • Page 50: Power Codogram

    Y Axis. Selects whether to represent the Y (color) axis with relative or absolute values. Relative. The Y axis represents power relative to the total power of all channels. Absolute. The Y axis represents absolute power of each channel. 2-30 RSA3408A Option 27 User Manual...

  • Page 51: Figure 2-14: Power Codogram

    Slot number in the radio frame Color Stop Slot number based on the end of analysis range (0) Relative time from completion of data acquisition Vertical Size Color Scale Vertical Start Horizontal Scale Horizontal Start Figure 2-14: Power codogram RSA3408A Option 27 User Manual 2-31...

  • Page 52: Code Power Versus Time Slot

    Code with Select Power described above. On. Default. Displays the total power of all channels for each time slot. Off. Displays power of the channel specified with Short Code in the View: Define menu (refer to page 2-26). 2-32 RSA3408A Option 27 User Manual...

  • Page 53: Figure 2-15: Code Domain Power Versus Time Slot

    The last slot number in the analysis range (Slot number in the radio frame) Marker readout Slot power Vertical Scale Vertical Start Horizontal Scale Horizontal Start Figure 2-15: Code domain power versus Time slot RSA3408A Option 27 User Manual 2-33...

  • Page 54: Code Power Versus Symbol

    Y Axis. Selects whether to represent the vertical (amplitude) axis with relative or absolute values. Relative. The vertical axis represents power relative to the total power of all channels. Absolute. The vertical axis represents absolute power of each channel. 2-34 RSA3408A Option 27 User Manual...

  • Page 55: Figure 2-16: Code Domain Power Versus Symbol

    Symbol power (Channel number at the symbol rate, modulation type) Marker readout Channel number (Symbol rate) Time slot number in the radio frame Vertical Scale Vertical Start Horizontal Scale Horizontal Start Figure 2-16: Code domain power versus Symbol RSA3408A Option 27 User Manual 2-35...

  • Page 56: Symbol Constellation

    Real channel number (Symbol rate) Time slot number in the radio frame Figure 2-17: Symbol constellation You can select degree or radian for the angular unit by pressing SYSTEM → Instrument Setup... → Angular Units... 2-36 RSA3408A Option 27 User Manual...

  • Page 57: Symbol Evm

    Measurement Content... Selects how to display the vertical axis: EVM. Represents the vertical axis with EVM (Error Vector Magnitude). Mag Error. Represents the vertical axis with magnitude error. Phase Error. Represents the vertical axis with phase error. RSA3408A Option 27 User Manual 2-37...

  • Page 58: Figure 2-18: Symbol Evm

    Measurement Content = Mag Error or Phase Error Vertical Scale Vertical Offset Horizontal Scale Horizontal Start Figure 2-18: Symbol EVM You can select degree or radian for the angular unit by pressing SYSTEM → Instrument Setup... → Angular Units... 2-38 RSA3408A Option 27 User Manual...

  • Page 59: Symbol Eye Diagram

    Eye Length. Enters the number of display symbols on the horizontal axis. Range: 1 to 16 (default: 2) Symbol number Short code number Marker readout Channel number (Symbol rate) Time slot number in the radio frame Figure 2-19: Symbol eye diagram RSA3408A Option 27 User Manual 2-39...

  • Page 60: Symbol Table

    Bin. Default. Binary digit Rotate. Sets the start position. Range: 0 to 3. Symbol number Short code number Marker readout Symbol value (Channel number at the symbol rate, modulation type) Figure 2-20: Symbol table 2-40 RSA3408A Option 27 User Manual...

  • Page 61: Modulation Accuracy

    ■ Origin offset (IQ feedthrough) Constellation view Time slot number in the radio frame Figure 2-21: Modulation accuracy The view settings are the same as for Symbol Constellation. Refer to Symbol Constellation on page 2-36. RSA3408A Option 27 User Manual 2-41...
  • Page 62 Downlink Analysis in the Demod Mode 2-42 RSA3408A Option 27 User Manual...

  • Page 63: Uplink Analysis In The Demod Mode

    Figure 2-22: Uplink analysis measurement menu in the Demod mode The 3GPP-R5 uplink modulation analysis is based on the standard digital modulation analysis function. For the digital modulation analysis, refer to the RSA3408A User Manual. RSA3408A Option 27 User Manual 2-43...

  • Page 64: Ack/Nack Analysis

    5. Press the AMPLITUDE key on the front panel to set the amplitude appropriately. If the input level is too high, A/D OVERFLOW displays in the red box at the NOTE. center top of the screen. If this occurs, raise the reference level. 2-44 RSA3408A Option 27 User Manual...
  • Page 65 Refer to page 2-46 for details of the Meas Setup menu. 10. Set the analysis range in the overview using the Timing menu. Refer to the RSA3408A User Manual for the details. 11. Press the MEAS SETUP key on the front panel and then the Analyze side key to start processing the frames in the analysis range.

  • Page 66: Measurement Setup Menu

    For the filters, refer to Process Flow of Digitally-Modulated Signal in the RSA3408A User Manual. Filter Parameter. Sets an α/BT value for Measurement Filter and Reference Filter described above. Range: 0.0001 to 1 (default: 0.22) 2-46 RSA3408A Option 27 User Manual...

  • Page 67: Figure 2-23: Subframe Offset

    DPCH (see Figure 2-23). Downlink Unit: Symbols HS-SCCH • • • HS-PDSCH Downlink time offset DPCH (DTO) Subframe to time-slot offset (STO) Uplink HS-DPCCH DPDCH Displayed on the symbol table Figure 2-23: Subframe offset RSA3408A Option 27 User Manual 2-47...
  • Page 68 The error from the center frequency is shown on the Freq Error side key. Off. Sets the carrier frequency using Frequency Offset. Frequency Offset Sets the carrier frequency when Off is selected in Auto Carrier. Input the carrier offset from the center frequency. 2-48 RSA3408A Option 27 User Manual...

  • Page 69: Measurement Display

    HS-DPCCH subframe, the symbol table text is all white. When an ACK or NACK time slot is selected, the symbol table text color changes to show the position of the ACK/NACK symbols (yellow) and the CQI symbols (blue). RSA3408A Option 27 User Manual 2-49...
  • Page 70 240 k 120 k 60 k 30 k 15 k Change scale and format of the view as needed. For the details, refer to the RSA3408A User Manual and the RSA3408A Option 23 User Manual. 2-50 RSA3408A Option 27 User Manual...
  • Page 71 Appendices...

  • Page 73: Measurement Limit Defaults

    Appendix A: Measurement Limit Defaults This section provides tables of the measurement limit defaults. Tables A-1, A-2, and A-3 list the default limit settings used to perform the pass/file testing for the 3GPP-R5 downlink measurements. Refer to Using the Measurement Limits Editor on page 2-12 for procedures to edit the measurement limits.

  • Page 74: Table A-2: Sem Limits In Band I And Iii

    Appendix A: Measurement Limit Defaults SEM Offset from Channel Tables A-2 and A-3 list the default values of the measurement limits that can be Limits used for the spectrum emission mask measurement for Band I, II, and III defined in 3GPP-R5. Table A-2: SEM limits in Band I and III Zone Enable...

  • Page 75: Scale Setting Range

    -100 to +200% (EVM) -300 to +300% (amplitude error) -675 to +675 deg. (phase error) Symbol eye diagram 0 to 639 symbols Fixed 1. Tf: Frame time; Nf: Frame number 2. CDP: Code Domain Power RSA3408A Option 27 User Manual...
  • Page 76 Appendix B: Scale Setting Range RSA3408A Option 27 User Manual...

  • Page 77: Index

    Index...
  • Page 79 Range, scale setting, B-1 Related manuals, v EBW measurement, 2-10 PDF, v Factory default settings, A-1 Save measurement limits, 2-17 Scale setting range, B-1 Spectrum emission mask measurement, 2-7 STO, 2-47 Subframe to TS offset, 2-47 RSA3408A Option 27 User Manual Index-1...
  • Page 80 Index Symbol constellation, 2-36 Symbol EVM, 2-37 Symbol eye diagram, 2-39 Symbol table, 2-40 Uplink analysis ACK/NACK analysis, 2-44 Demod mode, 2-43 Index-2 RSA3408A Option 27 User Manual...

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