Rohde & Schwarz SMBV-K52 User manual

DVB-H
Digital Standard for
R&S®Signal Generators
Operating Manual
Operating Manual
1008.0970.12 ─ 16
(:89Ô<)
Test & Measurement

This document describes the following software options:
●R&S®SMBV-K52
1415.8148.xx
●R&S®SMU-K52
1408.7010.02
●R&S®AMU-K52
1402.9557.02
●R&S®SMATE-K52
1404.7800.02
●R&S®SMJ-K52
1404.2106.02
This manual version corresponds to firmware version:
FW 3.20.281.xx and later of the R&S®SMBV100A
FW 2.20.360.142 and later of the R&S®SMU200A, R&S®SMATE200A, R&S®SMJ100A and
R&S®AMU200A
© 2015 Rohde & Schwarz GmbH & Co. KG
Mühldorfstr. 15, 81671 München, Germany
Phone: [phone] - 0
Fax: [phone]
Email: [email protected]
Internet: www.rohde-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.
The following abbreviations are used throughout this manual: R&S®SMBV100A is abbreviated as R&S SMBV, R&S®SMU200A is
abbreviated as R&S SMU, R&S®AMU200A is abbreviated as R&S AMU, R&S®SMATE200A is abbreviated as R&S SMATE,
R&S®SMJ100A is abbreviated as R&S SMJ, R&S®WinIQSIM2TM is abbreviated as R&S WinIQSIM2; the license types
02/03/07/11/13/16/12 are abbreviated as xx.

ContentsDVB-H
3Operating Manual 1008.0970.12 ─ 16
Contents
1 Preface.................................................................................................... 5
1.1 Documentation Overview............................................................................................. 5
1.2 Conventions Used in the Documentation...................................................................6
1.2.1 Typographical Conventions.............................................................................................6
1.2.2 Notes on Screenshots.....................................................................................................7
1.2.3 Naming of Software Options........................................................................................... 7
2 Introduction............................................................................................ 9
2.1 Modulation System DVB-H...........................................................................................9
2.1.1 Pseudo Noise Scrambler................................................................................................ 9
2.1.2 Outer Coder.................................................................................................................. 10
2.1.3 Outer Interleaver........................................................................................................... 10
2.1.4 Inner Coder................................................................................................................... 10
2.1.5 Inner Interleaver............................................................................................................ 11
2.1.6 Mapper.......................................................................................................................... 12
2.1.7 Frame Adaption.............................................................................................................13
2.1.8 Transport Parameter Signalling.................................................................................... 14
2.2 Extensions to DVB-T...................................................................................................14
2.2.1 4K Mode and In-Depth Interleavers.............................................................................. 14
2.2.2 Time-Slicing.................................................................................................................. 15
2.2.3 Forward Error Correction for Multiprotocol Encapsulated Data (MPE-FEC).................17
3 DVB-H User Interface...........................................................................19
3.1 General Settings..........................................................................................................19
3.2 System Configuration.................................................................................................23
3.3 TPS Settings................................................................................................................ 26
3.4 Filter / Clipping Settings.............................................................................................31
3.4.1 Filter Settings................................................................................................................ 31
3.4.2 Clipping Settings........................................................................................................... 32
3.5 Trigger/Marker/Clock Settings................................................................................... 34
3.5.1 Trigger Settings.............................................................................................................35
3.5.2 Marker Mode................................................................................................................. 40
3.5.3 Marker Delay.................................................................................................................40

ContentsDVB-H
4Operating Manual 1008.0970.12 ─ 16
3.5.4 Clock Settings............................................................................................................... 41
3.5.5 Global Settings..............................................................................................................43
4 Remote-control commands.................................................................45
4.1 General Commands.................................................................................................... 46
4.1.1 Primary Commands...................................................................................................... 46
4.1.2 Filter Settings................................................................................................................ 50
4.1.3 Clipping Settings........................................................................................................... 54
4.1.4 Trigger Settings.............................................................................................................55
4.1.5 Marker Settings............................................................................................................. 61
4.1.6 Clock Settings............................................................................................................... 66
4.2 System Configuration.................................................................................................68
4.3 TPS Settings................................................................................................................ 73
List of Commands................................................................................77
Index......................................................................................................79

PrefaceDVB-H
5Operating Manual 1008.0970.12 ─ 16
1 Preface
1.1 Documentation Overview
The user documentation for the R&S Signal Generator consists of the following parts:
●Online Help system on the instrument,
●"Quick Start Guide" printed manual,
●Documentation CD-ROM with:
– Online help system (*.chm) as a standalone help,
– Operating Manuals for base unit and options,
– Service Manual,
– Data sheet and specifications,
– Links to useful sites on the R&S internet.
Online Help
The Online Help is embedded in the instrument's firmware. It offers quick, context-sen-
sitive access to the complete information needed for operation and programming. The
online help contains help on operating the R&S Signal Generator and all available
options.
Quick Start Guide
The Quick Start Guide is delivered with the instrument in printed form and in PDF for-
mat on the Documentation CD-ROM. It provides the information needed to set up and
start working with the instrument. Basic operations and an example of setup are descri-
bed. The manual includes also general information, e.g., Safety Instructions.
Operating Manuals
The Operating Manuals are a supplement to the Quick Start Guide. Operating Manuals
are provided for the base unit and each additional (software) option.
These manuals are available in PDF format - in printable form - on the Documentation
CD-ROM delivered with the instrument. In the Operating Manual for the base unit, all
instrument functions are described in detail. Furthermore, it provides an introduction to
remote control and a complete description of the remote control commands with pro-
gramming examples. Information on maintenance, instrument interfaces and error
messages is also given.
In the individual option manuals, the specific functions of the option are described in
detail. For additional information on default settings and parameters, refer to the data
sheets. Basic information on operating the R&S Signal Generator is not included in the
option manuals.
Documentation Overview

PrefaceDVB-H
6Operating Manual 1008.0970.12 ─ 16
Service Manual
The Service Manual is available in PDF format - in printable form - on the Documenta-
tion CD-ROM delivered with the instrument. It describes how to check compliance with
rated specifications, on instrument function, repair, troubleshooting and fault elimina-
tion. It contains all information required for repairing the instrument by the replacement
of modules.
This manual can also be orderd in printed form (see ordering information in the data
sheet).
Release Notes
The release notes describe new and modified functions, eliminated problems, and last
minute changes to the documentation. The corresponding firmware version is indicated
on the title page of the release notes. The current release notes are provided in the
Internet.
Web Help
The web help provides online access to the complete information on operating the
R&S Signal Generator and all available options, without downloading. The content of
the web help corresponds to the user manuals for the latest product version.
The web help is available on the R&S Signal Generator product page at the Down-
loads > Web Help area.
Application Notes
Application notes, application cards, white papers and educational notes are further
publications that provide more comprehensive descriptions and background informa-
tion.
The latest versions are available for download from the Rohde & Schwarz website, at
http://www.rohde-schwarz.com/appnotes.
1.2 Conventions Used in the Documentation
1.2.1 Typographical Conventions
The following text markers are used throughout this documentation:
Convention Description
"Graphical user interface ele-
ments"
All names of graphical user interface elements on the screen, such as
dialog boxes, menus, options, buttons, and softkeys are enclosed by
quotation marks.
KEYS Key names are written in capital letters.
Conventions Used in the Documentation

PrefaceDVB-H
7Operating Manual 1008.0970.12 ─ 16
Convention Description
File names, commands,
program code
File names, commands, coding samples and screen output are distin-
guished by their font.
Input Input to be entered by the user is displayed in italics.
Links Links that you can click are displayed in blue font.
"References" References to other parts of the documentation are enclosed by quota-
tion marks.
1.2.2 Notes on Screenshots
When describing the functions of the product, we use sample screenshots. These
screenshots are meant to illustrate as much as possible of the provided functions and
possible interdependencies between parameters. The shown values may not represent
realistic test situations.
The screenshots usually show a fully equipped product, that is: with all options instal-
led. Thus, some functions shown in the screenshots may not be available in your par-
ticular product configuration.
1.2.3 Naming of Software Options
In this operating manual, we explicitly refer to options required for specific functions of
the digital standard.
The name of software options for signal generators vary in the name of the instrument,
but the option name is identical. Therefore we use in this manual the placeholder
R&S SMx/AMU.
Example:
Naming for an option of the vector signal generator R&S SMBV100A, e.g:
●R&S SMx/AMU-K99, stands for R&S SMBV-K99
The particular software options available for the corresponding instruments are listed
on the back of the title page.
Conventions Used in the Documentation

PrefaceDVB-H
8Operating Manual 1008.0970.12 ─ 16
Conventions Used in the Documentation

IntroductionDVB-H
9Operating Manual 1008.0970.12 ─ 16
2 Introduction
The R&S Signal Generator enables you to generate signals in accordance with the
DVB-H (Digital Video Broadcasting - Transmission System for Handheld Terminals)
standard.
To playback a signal from a waveform file created by the simulation software
R&S WinIQSIM2, the corresponding R&S WinIQSIM2 digital standard option must be
installed.
2.1 Modulation System DVB-H
The following block diagramm shows the components of the DVB-H transmission sys-
tem.
In this release, only the high-priority input is available.
Fig. 2-1: Components of the Transmission System DVB-H
2.1.1 Pseudo Noise Scrambler
The MPEG-2 transport packet stream is organized in fixed packet length of 188 bytes.
This includes 187 data bytes and one sync byte.
Modulation System DVB-H

IntroductionDVB-H
10Operating Manual 1008.0970.12 ─ 16
The data packets of the input stream are transformed to a Pseudo Random Binary
Sequence (PRBS) in order to obtain a bit sequence that has a positive effect on the
transmitted RF spectrum.
The PRBS polynomial is specified as: 1 + x14 + x15
The PRBS generator is loaded with the sequence "100101010000000" at the start of
every eight transport packet. To provide an initialization signal for the descrambler, the
sync byte of the first transport packet in a group of eight packets is bit-wise inverted
from 0x47 to 0xb8, whereas the sync bytes of the next seven packets remain 0x47.
After that, the PRBS generator runs continuously through the eight packets with a
PRBS period of 1503 bytes (8 packets * 188 bytes - 1sync byte).
2.1.2 Outer Coder
The outer coder is a Reed-Solomon encoder RS (204,188, t = 8). The RS coding is
applied to each randomized transport packet (188 byte) to generate an error protected
packet with a length of 204 bytes (188 randomized transport packets + 16 parity bytes).
With this RS code up to eight erroneous bytes can be detected in the transport stream
packet and corrected.
2.1.3 Outer Interleaver
The outer interleaver is an convolutional interleaver with I = 12 branches. Each branch
"j" is a FIFO shift register with depth j x 17 cells = 204 bytes.
2.1.4 Inner Coder
The inner coder is a punctured convolution code, based on a mother convolutional
code of rate 1/2 with 64 states. The inner coder encodes the input data, punctures cer-
tain bits to obtain higher code rates, and serializes the I/Q symbols to be transmitted.
Modulation System DVB-H

IntroductionDVB-H
11Operating Manual 1008.0970.12 ─ 16
The integrated puncturer removes bits from the redundant data stream. Puncturing
slightly impairs the characteristics of the code. The code rates that can be set are 1/2,
2/3, 3/4, 5/6 and 7/8. The code rate can be selected according to the required trans-
mission characteristics of the system.
Table 2-1: Puncturing pattern and transmitted sequence after conversion for the possible code rates
Code Rates r Puncturing Pat-
tern
Transmitted Sequence (after parallel-to-serial conver-
sions)
1/2 X:1
Y:1
X1Y1
2/3 X:10
Y:11
X1Y1Y2
3/4 X:101
Y:110
X1Y1Y2X3
5/6 X:10101
Y:11010
X1Y1Y2X3Y4X5
7/8 X:1000101
Y:1111010
X1Y1Y2Y3Y4X5Y6X7
Fig. 2-2: Mother convolutional code rate of 1/2
2.1.5 Inner Interleaver
The inner interleaver consists of a bit-wise interleaving followed by symbol interleaving.
Both interleaving processes are block based.
In non-hierarchical mode, the input bit stream for the bit-wise interleaving is multi-
plexed into v sub-streams depending on the modulation mode with v representing the
number of bits/symbol:
Modulation System DVB-H

IntroductionDVB-H
12Operating Manual 1008.0970.12 ─ 16
Modulation Mode Sub-Stream v
QPSK 2
16-QAM 4
64-QAM 6
In hierachical mode, the high priority stream is demultiplexed into two sub-streams and
the low priority stream is demultiplexed into v-2 sub-streams.
The outputs of the v bit interleavers are grouped to form the digital data symbols, such
that each symbol of v bits will consist of exactly one bit from each of the v interleavers.
The purpose of the symbol interleaver is to map v bit words onto 1512 (2K mode),
3024 (4K mode), or 6048 (8K mode) active carriers per OFDM symbol. The symbol
interleaver acts on blocks of 1512 (2K mode), 3024 (4K mode), or 6048 (8K mode)
data symbols. Furthermore, for the interleaver is an in-depth mode available for 2K and
4K in which the interleaver always maps the v bit words onto 6048. This is described in
detail in chapter 2.2.1, "4K Mode and In-Depth Interleavers", on page 14.
2.1.6 Mapper
All data carriers in one OFDM symbol are modulated using either QPSK, 16-QAM, or
64-QAM.
Additionally, for the hierarchical mode, non-uniform 16-QAM and non-uniform 64 QAM
constellations are available with different values for parameter α. α ist the minimum
distance separating two constellation points carrying different HP-bit values divided by
the minimum distance separating any two constellation points. For non-hierarchical
transmission, the constellation is shaped as if α is 1.
16 QAM mapping with α = 1
16 QAM mapping with α = 2
Modulation System DVB-H

IntroductionDVB-H
13Operating Manual 1008.0970.12 ─ 16
2.1.7 Frame Adaption
The transmitted signal is organized in super-frames. Each super-frame consists of 4
frames.
Each frame contains scattered pilot cells, continual pilot carriers, and TPS carriers. The
pilots can be used for frame synchronization, frequency synchronization, time synchro-
nization, channel estimation, and transmission mode identification.
Each frame consists of 68 OFDM symbols. Each symbol consists of a guard interval
and a useful part. The symbols in an OFDM frame are numbered from 0 to 67.
Fig. 2-3: OFDM frame structure
Each OFDM symbol is constituted by a set of carriers. The number of carriers depends
on the OFDM mode:
OFDM Mode No. of Carriers
2K 1705
4K 3409
8K 6817
Modulation System DVB-H

IntroductionDVB-H
14Operating Manual 1008.0970.12 ─ 16
2.1.8 Transport Parameter Signalling
The Transport Parameter Signalling (TPS) carriers are used to signalling parameters
related to the transmission scheme. The TPS is transmitted parallel on 17 TPS carriers
for the 2K mode, 34 carriers for the 4K mode, and 68 carriers for the 8K mode. Every
TPS carrier in the same symbol conveys the same differentially encoded information
bit.
The TPS parameter bits are described in chapter 3.3, "TPS Settings", on page 26.
2.2 Extensions to DVB-T
The Digital Video Broadcasting - Handheld (DVB-H) standard is based on the earlier
standard DVB-T, which is used for terrestrial digital broadcasting.
DVB-H provides features to meet the specific requirements for handheld, mobile termi-
nals such as:
●power off some part of the reception chain to increase the battery duration
●ease access to the services when receivers switching to the next cell
●migitate the effects of man-maid noise and severe mobile multipath channels on
the receiving capabilities
●offer sufficient flexibility and scalability to allow reception of services at various
speeds
●offer the flexibility to be used in various transmission bands and channel bandwiths
The basic technical extensions that make it possible to receive digital video broadcast-
ing services on handheld terminals are:
●4K Mode and In-Depth Interleavers
●Time-Slicing
●Forward Error Correction for Multiprotocol Encapsulated Data (MPE-FEC)
2.2.1 4K Mode and In-Depth Interleavers
The additional 4K mode is an trade-off between transmission cell size and mobile
reception capabilities to improve network planning flexibility. The 4K mode is suitable
for single transmitter operation and for small and medium single frequency networks
(SFN). It provides a Doppler tolerance allowing very high speed reception. The mobile
reception is faster compared to the 8K mode and the cell size is bigger compared to
the 2K mode.
The additional in-depth interleavers increase the flexibility of the interleaving for the 2K
and 4K mode. The depth of the inner interleaver is enlarged to four consecutive OFDM
symbols (2K) or to two consecutive OFDM symbols (4K).
Extensions to DVB-T

IntroductionDVB-H
15Operating Manual 1008.0970.12 ─ 16
Fig. 2-4: In-Depth Interleaver for 2K and 4K Mode
2.2.2 Time-Slicing
The time-slicing module provided with DVB-H reduces the average power consumption
of the receiving handheld terminals and enables smooth and seamless service hand-
over.
IP datagramms are transmitted as data bursts in small time slots using a significantly
higher instantaneous bit rate compared to traditional streaming bit rates. During the off
times (between the bursts), the receiving handheld is inactive and therefore using less
power.
Extensions to DVB-T

IntroductionDVB-H
16Operating Manual 1008.0970.12 ─ 16
Fig. 2-5: DVB-H Time-Slicing
The point of time when the next burst is transmitted (delta_t) is indicated within the
burst currently being received.
Fig. 2-6: Next Burst Indication
Time-slicing enables a handheld receiver to stay active only for a fraction of time, that
is, when the burst is transmitted. Note that while the receiver is inactive between the
bursts, the transmission stream is constantly on, that is, the transmission stream is
never interrupted. Between the off times of a particular service, other services are
transmitted in bursts in a sequence.
Extensions to DVB-T

IntroductionDVB-H
17Operating Manual 1008.0970.12 ─ 16
In addition, time-slicing allows to use the receiver to monitor neighbouring cells during
the off times. Performing the cell switching during an off time enables a smooth and
seamless service handover.
Time-slicing is mandatory for DVB-H.
2.2.3 Forward Error Correction for Multiprotocol Encapsulated Data
(MPE-FEC)
The MPE-FEC module provided with DVB-H impoves the carrier-to-noise (C/N) per-
formance and the Doppler performance in mobile channels and improve the tolerance
to impulse interference.
This is accomplished by adding an additional Reed-Solomon code (RS 255,191) in
conjunction with a block interleaver. The MPE-FEC module provides a specific frame
structure; the MPE-FEC frame. The MPE-FEC frame consists of an application data
table (ADT) with 191 columns for the IP datagramms and an Reed-Solomon data table
(RDT) with 61 columns for the Reed-Solomon parity information.
The IP datagramms are introduced vertically column-by-column. Empty cells and col-
umns are padded with zeros. The RS code is coded line-by-line: For each row of 191
IP datagramm bytes the 64 parity bytes are calculated, using the RS code. This pro-
vides a virtual interleaving effect, because all RS data bytes are calculated from the IP
datagramms.
After the coding is finished, the IP datagramms are encapsulated and transmitted in an
MPE section and the parity information data of each column in the RDT table are trans-
mitted in an MPE-FEC section.
Extensions to DVB-T

IntroductionDVB-H
18Operating Manual 1008.0970.12 ─ 16
Fig. 2-7: MPE-FEC Packet/Frame Structure
Transmitting the IP datagramms and parity information data in separate sections
allows the receiver to choose whether to use the MPE-FEC feature or not. If the MPE-
FEC decoder is not implemented or if the feature is not activated in the receiver, the
transmitted MPE-FEC sections with the parity information data are ignored, that is, only
the payload with the IP datagramms is taken under consideration.
MPE-FEC is optional for DVB-H.
Extensions to DVB-T

DVB-H User InterfaceDVB-H
19Operating Manual 1008.0970.12 ─ 16
3 DVB-H User Interface
The menu for setting the DVB-H digital standard is either called from the baseband
block or from the menu tree under "Baseband."
3.1 General Settings
The menu is split into several sections for configuring the standard.
The upper menu section is where the DVB-H digital standard is selected, enabled, and
reset, and where the generated waveform file can be selceted.
In the "Signal Parameters" section, the number of super-frames can be selected and
signal relevant parameters are displayed, if a signal is being generated.
The buttons in the lower menu section lead to submenus to configure the system and
setting the filter, trigger, and clock parameters.
General Settings

DVB-H User InterfaceDVB-H
20Operating Manual 1008.0970.12 ─ 16
State
Activates the standard and deactivates all the other digital standards and digital modu-
lation modes in the same path.
Remote command:
[:SOURce<hw>]:BB:DVB:STATe on page 48
Set To Default
Calls the default settings. The values of the main parameters are listed in the following
table.
Parameter Value
State Not affected by "Set to default"
Number of Super-Frames 1
Hierarchy Mode Non-hierarchical
HP Sorce PN 23
Filter Type Cosine
Clipping OFF
Trigger Mode Auto
Cell Identification ON
Time-Slicing ON
ID [4 hex] 0000
MPE-FEC OFF
PN Scrambler ON
Outer Coder ON
Outer Interleaver ON
Inner Coder ON
Rate 1/2
Inner Bit Interleaver ON
Inner Symbol Interleaver ON
Inner Interleaver Mode Native
TX Mode 2 K
OFDM/RF Bandwith 8 MHz
Modulation QPSK
Alpha 1
Guard Inerval 1/8
Remote command:
[:SOURce<hw>]:BB:DVB:PRESet on page 46
General Settings