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Low capacityDigital Radio System

SRAL XD



Contents

Applications

Main features

System architecture

Installation &maintenance

Management

Technical data

market indications and trends, adds

to its extensive microwave portfolio

the new line of point to point low

capacity digital radio: SRAL XD.

Siemens expertise covers most of theoutstanding technologies which

current applications are based on:

switching, cellular technology, radio

and networking, voice and data over

IP and ATM.

An outstanding turnkey project

management capability, the ownership

of a so wide range of in-house product

lines and a worldwide field proven

experience, represent the unequaled

Siemens business card.

Microwave systems cover most

of connectivity needs especially in

the lower layers of the transmission

networks, consolidating their role

of reliable, easy-to-install and cost-effective access solution. Siemens,

used to be one of the frontrunners

in this market segment, is ready to

match the expectations of the new

incoming telecommunication era

characterized by broadband and

mobility convergence.

Nowadays, the new challenge

launched by operators aims to

increase link density and capacity,

leaving spectrum occupancy

practically unchanged.Siemens, always ready to acknowledge

3G Cells

2G Cells



A wide-range of applications is

possible, particularly since voice

and data can be transmitted over

the same microwave link.

A typical scenario is an enterprisewith a branch office located at some

distance from the main premises.

Service convergence is the word

summarising the trend of this kind

of network, and once again flexibility

becomes a must even in this case.

SRAL XD line is primarily designed forurban networks, but is also suitable

in regional networks meeting all the

requirements of access and trunk

applications.

• Mobile Networks: in the 3G Mobile

ATM based network, typically SRAL XD

is used to collect traffic conveying

from NodeB to Hub stations; in the

2G networks it is already implemented

to provide access to core networks.

In the next future, the overlay

of the two mobile networks will

certainly benefit from SRAL XD

upgrading facilities, rewarding

operators with flexible and versatile

infrastructures.

• Fixed services Networks: SRAL XD

supports ATM/IP networks, LAN

and WAN.

Applications

Other MobileOperators

PSTN/ISDN

Public Internet

EnterpriseIntranetHQ

Branch Office

IP LAN

MSC

SGSN

GGSN



MinIDU solution

Add/Drop and Crossconnection

functionalities enrich the set of SRAL XD

features: any E1 stream plugged in

the near end terminal can be

extracted from any E1 connector

of the far end terminal, eliminating

the need of bulky distribution frames.

Furthermore, the Add/Drop facility

permits to drop the required E1 in

station leaving the remaining streams

passing untouched.

Based on network specific needs, the

operator can select either higher

spectrum efficiency or higher system

gain and hop lengths.

All the parameters can be software

selected locally or remotely in order

to adapt the hardware platform to

each single link characteristic in

terms of available RF channel,

payload, usable bandwidth and hop

length.SRAL XD flexibility and versatility

greatly optimize all the upgrading

procedures and configuration

changes. A terminal can be easily

relocated without any hardware

modification simply re-shaping its

peculiar parameters on the new link

requirements.

Another important strong advantage

is represented by the extreme

compactness of SRAL XD Indoor Unit.

A single 44 mm high unit is sufficientto implement any protected or

unprotected terminal configuration,

minimising the impact of

transmission equipment. But SRAL

XD family offers further possibilities

in order to face the problem of

station footprint, the most

troublesome matter for network

planners: integrating the indoor card

BTSs/ NodeBs for operators using

Siemens integrated solution.This solution combines BTS/NodeB

and transmission in the same shelf,

eliminating any additional room

allocation for transmission systems.

Main features

Automatic Transmitter Power Control

has been implemented to increase

the system performances, reducing

power consumption and interference

in crowded nodes; ATPC function can

be switched off, setting the

transmitted power to a fixed value

included in the ATPC interval.

BTS/NodeB rack



System architecture

SRAL XD equipment is available in

Split Indoor and Outdoor Configuration;

both the IDU and the ODU have been

redesigned in order to reduce their

mechanical dimension respect to

the previous SRA L generation of PDH

microwave equipment. In fact, in

order to save room for the indoor

installation, the dimensions of the

IDU have been dramatically reduced,

moving the mo/demodulationsection to the ODU. As a result the

IDU able to provide protected

configurations is only 1U high.

In spite of this change the

dimensions of the ODU have been

reduced as well by adopting the state

of the art technology.

MinIDU

Plug-in IDU

SingleBoard IDUMinIDU

Plug-in IDU

SingleBoard IDU

ND ODUHD/HP ODU

Three different IDU families are

available in order to provide

respectively tailored configurations,

cost-effective solution, maximum

flexibility and integration into

Siemens NodeB/BTS racks:

• SingleBoard

• Plug-in

• MinIDU

Normal DensityHigh Density/High Performance

Each version, being independent

from modulation format and

frequency bands, is able to

manage either High or Normal

Density arrangements.





State of art RF technology has been

the baseline for SRAL XD ODUs

development, completely matching

all the technical constraints

introduced by the high modulation

scheme adopted for the HD version:

system linearity and synthesizer

phase noise.

Two different outdoor units, capacity

independent, are part of SRAL XD

suit:

ODU ND:

is the appropriate solution for

normal density arrangement,

able to achieve the best compromise

between performance and power

consumption by exploiting a

constant amplitude modulation

format (4 CPM).

ODU HD/HP:

born for high density arrangements,

the same equipment is capable to

perform normal density arrangement

as well thanks to software selection

of the relevant modulation format.The adoption of Trellis Code

Modulation leads to Rx threshold

level unmatched by a plain 16 QAM

modulation.

OUTDOOR UNITS



SRAL XD has been engineered to

simplify to the maximum extent all

the operations related to the system

such as installation, maintenance,

upgrading and supervision.

Configuration settings, system

upgrades can be remotely performed

with software downloads, without

the need of sending technicians on site.

The compact size and reduced weight

of the Indoor Units, Outdoor Unitsand antennas allow a faster and

easier deployment, together with a

reduced environmental impact.

The Outdoor unit can be directly

mounted on the rear of the antenna,

avoiding the use of any waveguide.

Several mounting structures, holding

one or two ODUs, are available for

integrated or separated ODU-antennaconnections.

Moreover, the IDU hosts an extractable

“Memory Key” in which the configuration

For SRAL XD product line, system

concept and embedded software

architecture have been designed to

allow an user-friendly and effective

local and remote terminals’

management.

SRAL XD Indoor Unit offers a wide

range of management and service

interfaces, together with enhanced

routing functionalities: the

combination of these new features

dramatically improves SRAL XD

interworking capabilities to fit any

DCN requirement.

SRAL XD, as all Siemens microwave

product lines, can be managed not

only by the existing Microwave

Installation &

maintenance

Management

of the system is contained. The use of

this key allows an easy ‘in field’

replacement of the IDU without

the use of the LCT, as well as off-line

initial software configurations

without any need for settingparameters during the installation.

Siemens NMS (NetViewer) but also

by third party Management Systems:

open interfaces are available to

integrate SRAL XD and all the other

Siemens Microwave Radiotransmission equipment in

multivendor transmission networks.

SRAL XDnetwork

SRAL XDnetwork

IP DCN

Third partynetwork

Third party

network

TMN channel

framed in2Mbit/s tributary

Ethernet

TMN channel

framed in2Mbit/s tributary

D-ext

channel

D-ext

channel

Ethernet

Ethernet

NetViewer



NetViewer

The Microwave Management System

NetViewer is a versatile TMN product

for the management of PDH, SDH and

Point-to-Multipoint microwave

systems, able to supervise other

vendors’ devices as well through a

standard SNMP interface. An overall

view of the complete network

structure and its ability to enter down

to the Network Element details give aclear picture of the whole network, its

configuration and events. Fault,

Configuration and Performance

management are carried out at

Network Element level; at Network

level Fault and Security configuration

are available.

Netviewer is the basic part of Siemens

offer for Network Management

oriented to microwave networks that

is represented by the NetViewer NME

Suite.

The suite is composed of a number of

modules:

• NetViewer, core of the system, as

Element Manager;

• SNMP Agent, a real-time

northbound interface;

• TCOA (TMF CORBA Agent), a real-

time northbound interface;

• NML module, as Network Manager;

• HP OpenView NNM (Network Node

Manager) add-on, that allows theintegration of NetViewer in HP;

OpenView NNM (product of Hewlett

Packard);

• HP-Compaq TeMIP add-on, that

allows the integration of NetViewer

in HP OpenView TeMIP (product of

HP-Compaq).

Moreover, NetViewer can be easily

integrated both in Siemens SDH TMN

platform (TNMS) with TNMS Core

Radio add-on, and in Mobile TMN

platform (Radio Commander) in order

to offer to the operator a unique

interface for management purposes.

Business

Management

Service

Management

Network

Management

ElementManagement

Fault Management

Configuration Management

Accounting Management

Performance Management

Security Management

NetViewer



Technical data

SYSTEM PARAMETERS

RF Bands 7/8 GHz 7.1-8.5 GHz

13 GHz 12,75-13,25 GHz

15 GHz 14.4-15.35 GHz

18 GHz 17.7-19.7 GHz

23 GHz 21.2-23.6 GHz

26 GHz 24.5-26.5 GHz

28 GHz 27.5-29.5 GHz

32 GHz 31.8-33.4 GHz

38 GHz 37.0-39.5 GHz

Channel Arrangements Normal Density High Density/High Performance

Modulation 4CPM 4QAM 16TCM

Capacity 2xE1 4xE1 8xE1 16xE1/E3 2xE1 4xE1 8xE1 16xE1/E3 8xE1 16xE1/E3

Channel Spacing (MHz) 3,5 7 14 28 3,5 7 14 28 7 14

RSL@ BER 10-3 (dBm)Typical Values

7GHz -94 -91 -88 -84 -95 -92 -89 -86 -88.5 -85.5

8GHz -94 -91 -88 -84 -94 -91 -88 -85 -87.5 -84.5

13GHz -93.5 -90.5 -87.5 -83.5 -94.5 -91.5 -88.5 -85.5 -88 -8515GHz -93.5 -90.5 -87.5 -83.5 -94.5 -91.5 -88.5 -85.5 -88 -85

18GHz -93 -90 -87 -83 -93.5 -90.5 -87.5 -84.5 -87 -84

23GHz -92.5 -89.5 -86.5 -82.5 -93 -90 -87 -84 -86.5 -83.5

26GHz -92 -89 -86 -82 -92 -89 -86 -83 -85.5 -82.5

28GHz -91.5 -88.5 -85.5 -81.5 -92 -89 -86 -83 -85.5 -82.5

32GHz -91 -88 -85 -81 -91.5 -88.5 -85.5 -82.5 -85 -82

38GHz -91 -88 -85 -81 -91.5 -88.5 -85.5 -82.5 -85 -82

Output Power (dBm)Typical Values

7GHz 24 23 18

8GHz 24 22 1713GHz 20 22 17

15GHz 20 20 15

18GHz 18 24 19

23GHz 18 20 15

26GHz 18 20 15

28GHz 18 20 15

32GHz 17 19 14

38GHz 17 17 12

Output Power 24 for 7 to 23 GHzSetting Range (dB) 20 for 26 to 38 GHz 20 15

Power Consumption 1+0 terminal: 30W(max) 1+1 terminal: 50W



INDOOR UNIT

IDU Plug-in IDU SingleBoard MinIDU

Tributary Interfaces Up to 32x2 Mbit/s E1 Up to 16x2 Mbit/s E1 Up to 16x2 Mbit/s E134 Mbit/s E3

4xEthernet 10/100 Base T

Physical Interfaces Electrical, G.703 Electrical, G.703 Electrical, G.703Ethernet 10/100 Base T

Auxiliary Interfaces 2 x 10/100 BaseT-TMN channels 2 x 10/100 BaseT-TMN channels 2 x 10/100 BaseT-TMN channel2 x V.11 co/contradirectional 1 x V.11 co/contradirectional user or TMN channel

user or TMN channel user or TMN channel IUB/ABIS tracersRS-232 LCT interface RS-232 LCT interface 2x10/100 NodeB TMN channels

RS-232 LCT interface

Dimensions HxWxD 44 x 430 x 240 mm 44 x 430 x 240 mm 85 x 240 x 130 mm

Weight 1,5 kg 1,5 kg 2 kg

Power Supply Voltage -48 V ± 20 %

Temperature -5 ÷ +55 °CRange (ETS 300 019-1-3, class 3.2)

OUTDOOR UNITODU ND ODU HD/HP

Dimensions 230x230x110 mm 270x270x150 mm(HxWxD)

Weight 4,5 kg 7,5 kg

Temperature -33 ÷ +55 °CRange (ETS 300 019-1-4, class 4.1)



Siemens Mobile Communications S.p.A.Sales OfficeViale P. e A. Pirelli, 1020126 Milano - Italy

Phone + 39 02 243 1

F4.1 1765/1000 • Siemens Mobile Communications Spa

Printed in Italy

This publication is issued to provide information only and is not to form

part of any order or contract. The products and services described herein

are subject to availability and to change without notice.

www.siemens-mobile.com

Acronyms and AbbreviationsATM Asynchronous Transfer Mode

ATPC Automatic Transmitter Power Control

BTS Base Transceiver Station

CPM Continuous Phase Modulation

DCN Data Communication Network

IDU Indoor Unit

LCT Local Craft Terminal

NMS Network Management System

ODU Outdoor Unit

PDH Plesiochronous Digital Hierarchy

QAM Quadrature Amplitude Modulation

RF Radio FrequencySDH Synchronous Digital Hierarchy

SNMP Simple Network Management Protocol

TCM Trellis Code Modulation

TMN Telecommunication Management Network

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