ZTE RSUC849 ZXSDR RSUC is CDMA Radio System Unit User Manual

ZTE Corporation ZXSDR RSUC is CDMA Radio System Unit

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ZXSDR RSUC
Radio System Unit of CDMA with 1T2R
User Manual
Hardware Version: HV1.00
ZTE CORPORATION
NO. 55, Hi-tech Road South, ShenZhen, P.R.China
Postcode: 518057
Tel: +86-755-26771900
Fax: +86-755-26770801
URL: http://ensupport.zte.com.cn
E-mail: support@zte.com.cn
LEGAL INFORMATION
Copyright © 2011 ZTE CORPORATION.
The contents of this document are protected by copyright laws and international treaties. Any reproduction or
distribution of this document or any portion of this document, in any form by any means, without the prior written
consent of ZTE CORPORATION is prohibited.
Additionally, the contents of this document are protected by
contractual confidentiality obligations.
All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTE
CORPORATION or of their respective owners.
This document is provided “as is”, and all express, implied, or statutory warranties, representations or conditions
are disclaimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose,
title or non-infringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from the
use of or reliance on the information contained herein.
ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications
covering the subject matter of this document. Except as expressly provided in any written license between ZTE
CORPORATION and its licensee, the user of this document shall not acquire any license to the subject matter
herein.
ZTE CORPORATION reserves the right to upgrade or make technical change to this product without further notice.
Users may visit ZTE technical support website http://ensupport.zte.com.cn to inquire related information.
The ultimate right to interpret this product resides in ZTE CORPORATION.
Revision History
Revision No.
Revision Date
Revision Reason
R1.1
2012–03–15
Added a caution for user’s changes or modification action in FCC
& IC STATEMENT.
R1.0
2010–05–25
Serial Number: SJ-20101019140047-002
Publishing Date: 2012-03-15 (R1.1)
First Edition
FCC & IC STATEMENT
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
1. This device may not cause harmful interference.
2. And this device must accept any interference received, including interference that may
cause undesired operation.
Note:
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in
a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own expense.
Caution!
Changes or modifications to this unit not expressly approved by the party responsible for
compliance will void the user’s authority to operate the equipment. Any change to the
equipment will void FCC and IC grant.
II
FCC Radiation Exposure
Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with minimum distance 4m
between the radiator & your body.
II
Declaration of RoHS
Compliance
To minimize the environmental impact and take more responsibility to the earth we live,
this document shall serve as formal declaration that ZXSDR RSUC manufactured by
ZTE CORPORATION are in compliance with the Directive 2002/95/EC of the European
Parliament - RoHS (Restriction of Hazardous Substances) with respect to the following
substances:
Lead (Pb)
Mercury (Hg)
Cadmium (Cd)
Hexavalent Chromium (Cr (VI))
PolyBrominated Biphenyls (PBB’s)
PolyBrominated Diphenyl Ethers (PBDE’s)
…
The ZXSDR RSUC manufactured by ZTE CORPORATION meet the requirements of EU 2002/95/EC;
however, some assemblies are customized to client specifications. Addition of specialized,
customer-specified materials or processes which do not meet the requirements of EU 2002/95/EC
may negate RoHS compliance of the assembly. To guarantee compliance of the assembly, the
need for compliant product must be communicated to ZTE CORPORATION in written form. This
declaration is issued based on our current level of knowledge. Since conditions of use are outside
our control, ZTE CORPORATION makes no warranties, express or implied, and assumes no liability
in connection with the use of this information.
II
Chapter 1
Saftey Description
Table of Contents
Safety Specifications Guide........................................................................................1-1
Safety Symbols ..........................................................................................................1-2
Safety Instructions......................................................................................................1-3
1.1 Safety Specifications Guide
These safety instructions must be considered as supplementary for local safety
regulations. The priority must be given to local safety regulations if there is any conflict
between the two.
The maintenance personnel must have the knowledge of safety operations and
maintenance with required qualification and technical background.
Warning!
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions:
This device may not cause harmful interference.
This device must accept any interference received, including interference that may
cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
The equipment is intended for installation in RESTRICTED ACCESS LOCATIONS.
All the operation and maintenance personnel must follow the safety precautions and
instructions provided by ZTE Corporation to avoid any accident.
Note:
ZTE Corporation does not bear any liabilities incurred because of violation of the
universal safety operation requirements, or violation of safety standards for designing,
manufacturing and using the equipment.
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FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment .This equipment should be installed and operated with minimum distance 3m
between the radiator& your body.
1.2 Safety Symbols
Table 1-1 lists safety symbols. They are to prompt the user of the safety precautions to be
observed during ZXSDR RSUC operation and maintenance.
Table 1-1 Safety Symbols Description
Safety Symbols
Meaning
No smoking: Smoking is forbidden
No flammables: No flammables can be stored.
No touching: Do not touch.
Universal alerting symbol: General safety attentions.
Electric shock: Risk of electric shock.
Electrostatic: The device may be sensitive to static electricity.
Microwave: Beware of strong electromagnetic field.
Laser: Beware of strong laser beam.
Scald: Beware of scald.
Amongst these safety symbols, the universal alarm symbols are classified into three levels:
danger, warning, and caution. The formats and meanings of the three levels are described
as below:
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Danger!
Indicates a potentially hazardous situation which, if not avoided, will result in death or
serious injury of people, or equipment damages and breakdown.
Warning!
Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
Caution!
Indicates a potentially hazardous situation which, if not avoided, could result in serious
injuries, equipment damages or interruption of part services.
1.3 Safety Instructions
This section describes the safety instructions related to electrical safety, antistatic, heavy
objects and modules.
Electrical Safety Instructions
The following are the electrical safety instructions about tools, high voltage, power cables,
holes and lightning:
Tools
Use special tools rather than common tools for high-voltage and AC operations.
High Voltage
Danger!
High voltage is hazardous. Direct or indirect contact with high voltage or main supply
using a wet object could result in death.
à
Strictly follow local safety rules to install AC power devices.
à
Installation staff must be qualified for performing high-voltage and AC operations.
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à
Do not wear any watch, hand chain, bracelet, ring or any other conductive objects
during such operations.
à
Prevent moisture from accumulating on the equipment during operations in a
damp environment.
Power Cable
Warning!
Never install or uninstall power cables while they are live. Otherwise, the power cable,
when contacting a conductor, may result in sparks or electric arc causing a fire or even
damage to eyes.
à
Make sure of shutting off power supply before installing or disconnecting a power
cable.
à
Before connecting the power cable, make sure that the connecting cable and its
label are appropriate for the actual installation requirements.
Drilling Holes
Warning!
It is not allowed to drill chassis holes without permission.
à
Unqualified drilling could damage wiring and cables inside the chassis.
Additionally, metal pieces inside the chassis created by the drilling could result
in a short circuit. Use insulation protection gloves and first move cables inside a
chassis away when drilling is necessary on a chassis.
à
Protect eyes during drilling as dust or flying debris may damage eyes.
à
Clean any debris in time after drilling.
Lightning
Danger!
Do not perform high-voltage, AC, iron tower or mast operations in a thunderstorm.
Thunderstorms would give rise to a strong electromagnetic field in the atmosphere.
Therefore, the equipment must be grounded and protected in time against lightning
strikes.
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Chapter 1 Saftey Description
Antistatic Safety Instructions
Caution!
Static electricity produced by human body can damage static-sensitive components on
circuit board, such as large-scale integrated circuits.
Friction caused by human body activities is the root cause of electrostatic charge
accumulation. Static voltage carried by a human body in a dry environment can be
up to 30 kV, and can remain there for a long time. An operator with static electricity
may discharge electricity through a component when he/she touches the conductor
and causing damage.
Wear an antistatic wrist strap (the other end of wrist strap must be well grounded)
before touching the equipment or holding a plug-in board, circuit board, Integrated
Circuit (IC) chip or other devices, to prevent human static electricity from damaging
sensitive components.
The antistatic wrist strap used must be subject to regular check. Do not replace the
cable of an antistatic wrist strap with any other cables.
Do not contact static-sensitive modules with any object that easily generates static
electricity. For example, friction of package bag, transfer box and transfer belt made
from insulation plastic may cause static electricity on components. Discharge of static
electricity may damage components when they contact a human body or the ground.
Modules should only contact materials such as an antistatic bag. Keep modules in
antistatic bags during storage and transportation.
Discharge static electricity of the test device before use, that is, ground the test device
first.
Do not place the module near a strong DC magnetic field, such as the cathode-ray
tube of a monitor. Keep the module at least 10 cm away.
Hoisting Heavy Objects
Warning!
When hoisting heavy objects, ensure that nobody is standing or walking under the hoisted
object.
Ensure the hoister can meet hoisting requirements when disassembling heavy
equipment, or moving and replacing equipment.
The installation personnel must be duly trained and qualified for hoisting operations.
Hoisting tools must be inspected and complete before service.
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Make sure that hoisting tools are fixed firmly on a sufficiently secured object or wall
before the hoisting operation.
Give brief oral instructions during hoisting operations to prevent any mishap.
Unplugging/Plugging a Module
Never plug a module with excessive force, to ensure that the pins on the backplane
do not get deformed.
Plug the module right into the slot and make sure module circuit faces do not contact
each other lest any short circuit may occur.
Keep hands off the module circuit, components, connectors and cable trough when
holding a module.
Rack Mount Safety Instructions
Rack Mount Instructions - The following or similar rack-mount instructions are included
with the installation instructions:
Elevated Operating Ambient - If installed in a closed or multi-unit rack assembly, the
operating ambient temperature of the rack environment may be greater than room
ambient. Therefore, consideration should be given to installing the equipment in an
environment compatible with the maximum ambient temperature (Tma) specified by
the manufacturer.
Reduced Air Flow - Installation of the equipment in a rack should be such that the
amount of air flow required for safe operation of the equipment is not compromised.
Mechanical Loading - Mounting of the equipment in the rack should be such that a
hazardous condition is not achieved due to uneven mechanical loading.
Circuit Overloading - Consideration should be given to the connection of the
equipment to the supply circuit and the effect that overloading of the circuits might
have on overcurrent protection and supply wiring. Appropriate consideration of
equipment nameplate ratings should be used when addressing this concern.
Reliable Earthing - Reliable earthing of rack-mounted equipment should be
maintained. Particular attention should be given to supply connections other than
direct connections to the branch circuit (e.g. use of power strips).
Other Safety Instructions
Note:
Do not perform maintenance or debugging independently, unless a qualified person is
present.
Perform an airtight test before RRU delivery, and prohibit disassembling the RRU on
site.
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Chapter 1 Saftey Description
Replacing any parts or making any changes to the equipment might result in an
unexpected danger. Therefore, be sure not to replace any parts or perform any
changes to the equipment unless authorized otherwise.
Due to that RRU is in high temperature during running, the RRU should be installed
in some regions out of operators' reach or strictly restricted.
Contact ZTE office if you have any question, to ensure your safety.
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Chapter 2
Product Descripition
Table of Contents
Overview ....................................................................................................................2-1
Position in a Network..................................................................................................2-1
Outer View .................................................................................................................2-2
Production Functions..................................................................................................2-3
Production Features ...................................................................................................2-4
2.1 Overview
ZTE Software Defined Radio (SDR) uses an architecture of separating the baseband
part from the Radio Frequency (RF) part. This architecture features high integration,
low consumption, flexible configuration and convenient installation & maintenance. The
new generation ZTE CDMA Base Station (BS) products based on the SDR is the first
SDR-based CDMA BS in the industry. It is able to help the operators have qualitative
leap. The form of this product can be distributed BBU + RRU or BBU + RSU. The product
form of ZTE SDR can be distributed BBU + RRU or BBU + RSU, macro BS or micro BS.
ZXSDR RSUC is the RSU part of ZTE CDMA2000 distributed SDR Common BTS
Platform Solution. It provides functions including RF modulation/demodulation, forward
power amplification, reverse low noise amplification, RF performance measurement and
carrier power control etc.
With a smaller size and lighter weight, the ZXSDR RSUC has significant advantages for
saving space, relocations, installation flexibility, and power savings. It designed for both
indoor and outdoor applications.
2.2 Position in a Network
In CDMA mobile communication network, the relationship between ZXSDR RSUC and
other network entities is shown in Figure 2-1.
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Figure 2-1 ZXSDR RSUC Position in a Network
The ZXSDR RSUC is an independent RF subsystem. Together with BBU , it forms
the complete BTS.The BTS implements radio transmission with the MS through the
CDMA2000 air interface. In addition, the BTS implements control of radio channels and
communication with the BSC
2.3 Outer View
Figure 2-2 shows the outer view of ZXSDR RSUC.
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Figure 2-2 Outer View of ZXSDR RSUC
2.4 Production Functions
ZXSDR RSUC provides primary functions is shown as Table 2-1.
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Table 2-1 The Primary Functions of ZXSDR RSUC
Function
Description
RF
Band: 800MHz1.9GHz2.1GHz2.0GHz(AWS)450MHz420MHz850MHz
RF modulation/demodulation
RF transceiver duplexer
Low noise amplification for received RF signal
Amplification for transmitted RF signal
RF transceiver
Interface
Baseband-RF interface: compliant with Common Public Radio Interface
(CPRI) protocol
Air interface: compliant with IS-2000 Release A and IS-856-A
Equipment
maintenance and test
Electronic label
Remote upgrade of software version for FPGA/BOOT/DSP/CPU
Remote reset of service boards
RSSI query
Automatic calibration
Reverse spectrum query: querying the reverse received signal spectrum of
each carrier
Power amplification control and protection: over-power, over-temperature,
and standing wave alarm
Reliability
Reverse voltage protection
Scenario
Indoor and outdoor applications
2.5 Production Features
Here are the product features of ZXSDR RSUC
Easy transportation and installation will save labor and building costs
Lower power consumption reduces installation of power expenditures and saves on
electricity charges.
Suitable for complicated base station environments
Supports star and chain networks between baseband and RF to provide more
convenient solutions for complicated base station environments.
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Chapter 3
Technical Descripition
Table of Contents
System Architecture ...................................................................................................3-1
Signal Processing Flow ..............................................................................................3-2
Technical Specifications .............................................................................................3-2
3.1 System Architecture
A ZXSDR RSUC consists of the transmit/receive signal board (RTR), power amplifier (PA),
duplexer (DFL), and power supply (RPDC).Figure 3-1 shows the schematic diagram of the
ZXSDR RSUC.
Figure 3-1 Schematic Diagram of the ZXSDR RSUC
The functions of ZXSDR RSUC’s subsystem is shown as Table 3-1.
Table 3-1 The functions of subsystem
Part
Description
RTR, the unit that integrates the processor, clock, CPRI interface, DPD
digital predistortion, RF transmitting and receiving functions, is the core
RTR
unit of the ZXSDR RSUC.
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Part
Description
Amplifies downlink RF signal input via the RTR and then sends the
signal to the DFL
PA
Provides digital pre-distortion feedback signals for the RTR
Provides a PA output enable/disable interface
Performs filtering and low noise amplification of the reverse CDMA
signal from the antenna
Filters the forward RF signal to be sent
Reports LNA alarms to the RTR
In the case of main/diversity combined cabinets, the main receive LNA
output end of the DFL has the power splitter function and reserves
DFL
an external port (Rx out)
Converts -48V DC input power supply to DC power supply required by
RPDC
the PA, RTR, or DFL
3.2 Signal Processing Flow
The internal signal processing flow of ZXSDR RSUC is as below:
Forwardlink processing
The business data from BBU enters the RTR, and then for intermediate frequency
processing. After the power amplification sent to the antenna for transmission.
Reverselink processing
The reverse CDMA signals from the antenna are converted to baseband digital signal
by RTR, then send to BBU.
3.3 Technical Specifications
3.3.1 Physical Indices
3.3.1.1 Dimension
The dimensions of ZXSDR RSUC in mm are : 482.6(H) × 88 (W) × 360.0 (D).
3.3.1.2 Weight
Weight of a ZXSDR RSUC : < 15 kg (33.1 pounds).
3.3.2 Power
Power Supply
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-48V DC Voltage range: -40V~-57V.
Power Consumption
In the case of 1S-1T, 4C/S, 15W/C, the total power consumption of the equipment is
270 W.
3.3.3 Capacity Indices
ZXSDR RSUC Capacity Indices is shown as Table 3-2
Table 3-2 ZXSDR RSUC Capacity Indices
Item
Carriers supported
8C 1X
8C DO
the Max 8C/1S-1T
3.3.4 Temperature and Humidity
Temperature: -20 ℃~+45 ℃. The change frequency must be less than 0.5 ℃/min.
Relative humidity: 5% ~95%
3.3.5 Environmental Classes
Grade Of Protection: IP30
Grounding Requirements: Joint grounding resistance less 1W; BTS grounding
resistance less 5 W.
Noise: Noise of working environment: less 65 dBA
3.3.6 Reliability Indices
Mean Time Between Failures (MTBF) : > 100,000 hours
MTTR (Mean Time To Repair): < 0.5 hour
Availability: > 99.999%
3.3.7 RF Indices
RF indices of the ZXSDR RSUC comply with 3GPP2 C.S0010-C, Recommended
Minimum Performance Standards for cdma2000 Spread Spectrum Base Station and
3GPP2 C.S0032-A, Recommended Minimum Performance Standards for CDMA2000
High Rate Packet Data Access Network.
Table 3-3 illustrates the 800 MHz transmitter indices.
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Table 3-3 800 MHz Transmitter Indices
Name
Index
Operating band
800 MHz (Band Class 0)
Transmitter output frequency tolerance
± 0.01 ppm
Occupied channel bandwidth
1.23 MHz (Band Class 0)
Output power at the Top of Cabinet
60W
(TOC)
Total transmit power
The total transmit power is within +2 dB and -2 dB of the
manufacturer’s rated power.
Modulation mode
Quadrature amplitude modulation
Conducted spurious emission and
< -45dBc @±750kHz offset Center Freq (RBW 30kHz)
radiated spurious emission suppression
< -60dBc @±1.98MHz offset Center Freq(RBW 30kHz)
>4MHz OFFSET:
< -36dBm(RBW 1kHz) @ 9KHz < f < 150KHz
<-36dBm(RBW 10kHz) @ 150KHz < f < 30MHz
<-30dBm(RBW 1MHz) @ 1GHz < f < 12.5GHz
4-6.4MHz OFFSET:
<-36dBm(RBW 1kHz) @ 30MHz < f < 1GHz
6.4M TO 16M OFFSET:
<-36dBm(RBW 10kHz) @ 30MHz < f < 1GHz
>16MHz OFFSET:
<-36dBm(RBW 100kHz) @ 30MHz < f < 1GHz
Transmitter intermodulation
If one BTS transmits at the rated power but another BTS’
performance
output power is 30 dB less than the former’s rated power.
When the powers of two BTSs are combined on the antenna
port, the generated intermodulation spurious emission
meets the conducted spurious emission requirement. The
IF difference of the transmit signals of two BTSs is 1.25M.
Pilot time tolerance
The PN time tolerance falls within 3 us and the inter-carrier
tolerance falls within 1 us.
Time Tolerance/phase tolerance of pilot
channel to other channels
Waveform quality
Time difference: < ±50 ns
Phase difference: < 0.05 rad
Rho is greater than 0.970 dBm with configuration of a
single pilot.
Pilot code domain power
With the standard 9CH configuration, the pilot code domain
power is in the range of -7.0±0.5 dB.
Inactive channel code domain power
With the standard 9CH configuration, the inactive channel
code domain power is less than -27 dB.
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Name
Index
DO MAC inactive channel code domain
With configuration of 13 FLUSs, the MAC inactive channel
power
code domain power is less than -29.5 dB (type 2).
DO DATA channel code domain power
With configuration of 13 FLUSs at the rate of 614.44 kbs
(test 1), the DATA channel code domain power is in the
range of -15.5 dB to -14.5 dB.
Wave quality of DO channels
Pilot channel: Rho > 0.97
MAC channel: Rho > 0.912
DATA channel: Rho > 0.97
Radio frequency Front End SWR
< 2.0
Table 3-4 illustrates the 1.9 GHz transmitter indices.
Table 3-4 1.9 GHz Transmitter Indices
Name
Index
Operating band
1.9 GHz (Band Class 1)
Transmitter output frequency tolerance
± 0.01 ppm
Occupied channel bandwidth
1.25 MHz
Output power at the Top of Cabinet
60W
(TOC)
Total transmit power
The total transmit power is within +2 dB and -2 dB of the
manufacturer’s rated power.
Modulation mode
Quadrature amplitude modulation
Conducted spurious emission and
< -45dBc @±885 kHz offset Center Freq (RBW 30kHz)
radiated spurious emission suppression
< -55 dBc @±1.98 MHz offset Center Freq (RBW 30kHz)
> 4 MHz OFFSET:
< -36 dBm (RBW 1kHz) @ 9KHz < f < 150 kHz
< -36 dBm (RBW 10kHz) @ 150 kHz < f < 30 MHz
< -36 dBm (RBW 100kHz) @ 30 MHz < f < 1 GHz
4-16 MHz OFFSET:
< -30 dBm (RBW 30kHz) @ 1 GHz < f < 12.5 GHz
16M-19.2M OFFSET:
<-30dBm(RBW 300kHz) @ 1GHz < f < 12.5GHz
>19.2MHz OFFSET:
<-30dBm(RBW 1MHz) @ 1GHz < f < 12.5GHz
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Name
Index
Transmitter intermodulation
If one BTS transmits at the rated power but another BTS’
performance
output power is 30 dB less than the former’s rated power.
When the powers of two BTSs are combined on the antenna
port, the generated intermodulation spurious emission
meets the conducted spurious emission requirement. The
IF difference of the transmit signals of two BTSs is 1.25 M.
Pilot time tolerance
The PN time tolerance falls within 3 us and the inter-carrier
tolerance falls within 1 us.
Time Tolerance/phase tolerance of pilot
channel to other channels
Waveform quality
Time difference: < ±50 ns
Phase difference: < 0.05 rad
Rho is greater than 0.990 dBm under the configuration of
a single pilot.
Pilot code domain power
With the standard 9CH configuration, the pilot code domain
power is in the range of -7.0±0.5 dB.
Inactive channel code domain power
With the standard 9CH configuration, the inactive channel
code domain power is less than -27 dB.
DO MAC inactive channel code domain
With configuration of 13 FLUSs, the MAC inactive channel
power
code domain power is less than -29.5 dB (type 2).
DO DATA channel code domain power
With configuration of 13 FLUSs at the rate of 614.44 kbs
(test 1), the DATA channel code domain power is in the
range of -15.5 dB to -14.5 dB.
Wave quality of DO channels
Pilot channel: Rho > 0.97
MAC channel: Rho > 0.912
DATA channel: Rho > 0.97
Radio frequency Front End SWR
< 2.0
Table 3-5 illustrates the 800 MHz receiver indices.
Table 3-5 800 MHz Receiver Indices
Name
Index
Operating band
800 MHz (Band Class 0)
Receiver sensitivity
< -115 dBm
Receiver dynamic range
When the lower limit is the receiver sensitivity and the
upper limit (noise level) equals 55 dBm/1.23MHz (Eb/N0 =
10 dB±1dB), the Frame Error Rate (FER) is lower than 1%.
Noise figure
<3
3-6
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Name
Index
Single tone desensitization
In the presence of a single tone that is 50 dB above the
CDMA signal level, and is at offset of ±750 kHz from the
center frequency, the output power of the MS increases by
no more than 3 dB ,and the FER is less than 1.5%.
In the presence of a single tone that is 75 dB above the
CDMA signal level, and is at offset of ±900 kHz from the
center frequency, the output power of the MS increases by
no more than 3 dB, and the FER is less than 1.5%.
Intermodulation spurious response
BAND 0:
attenuation
In the presence of two interfering tones that are 60 dB
above the CDMA signal level, and are at offsets of +900
kHz, +1.7 MHz, -900 kHz and -1.7 MHz from the center
frequency, the output power of the MS increases by no
more than 3 dB, and the FER is less than 1.5%.
Conducted spurious emissions and
< -80 dBm, measured within the BTS receive band
radiated spurious emissions
< -60 dBm, measured within the BTS transmit band
Radio frequency Front End SWR
< 2.0
Table 3-6 illustrates the 1.9 GHz receiver indices.
Table 3-6 1.9 GHz Receiver Indices
Name
Index
Operating band
1.9G Hz (Band Class 1&14)
Receiver sensitivity
< -115 dBm
Receiver dynamic range
When the lower limit is the receiver sensitivity and the upper
limit (noise level) equals - 55 dBm/1.23 MHz (Eb/N0 =
10dB±1dB), the Frame Error Rate (FER) is lower than 1%.
Noise figure
<3
Adjacent channel selection (ACS)
Band Class 6:> - 53dBm (± 2.5M)
Single tone desensitization
In the presence of a single tone that is 50 dB above the
CDMA signal level, and is at offset of ± 750 kHz from the
center frequency, the output power of the MS increases by
no more than 3 dB ,and the FER is less than 1.5%.
In the presence of a single tone that is 75 dB above the
CDMA signal level, and is at offset of ± 900 kHz from the
center frequency, the output power of the MS increases by
no more than 3 dB, and the FER is less than 1.5%.
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Intermodulation spurious response
In the presence of two interfering tones that are 60 dB
attenuation
above the CDMA signal level, and are at offsets of 1.25
MHz and 2.05 MHz, and -1.25 MHz and -2.05 MHz from
the center frequency, the output power of the MS increases
by no more than 3 dB, and the FER is less than 1.5%.
Conducted spurious emissions and
< -80 dBm, measured within the BTS receive band
radiated spurious emissions
< -60 dBm, measured within the BTS transmit band
Radio frequency Front End SWR
< 2.0
3.3.8 Interface Indices
The interface indices of ZXSDR RSUC is shown as Table 3-7.
Table 3-7 Description of ZXSDR RSUC’s interfaces
Type
Description
Index
CPRI
Fiber/Cable
2CPRI interfaces: 1 CPRI for BBU or
upper-level RSU1 CPRI for lower-level RSU
UE
Um interface
1 Tx/Rx1 diversity receivers
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Hardware Decsripition
Table of Contents
Function .....................................................................................................................4-1
Panel..........................................................................................................................4-1
Button ........................................................................................................................4-2
Indicators ...................................................................................................................4-3
Panel Interfaces .........................................................................................................4-3
4.1 Function
RSU provides the following functions:
Communication with the baseband subrack
Conversion between air interface RF signals and digital signals
RF signal amplification, transmission, and reception
Clock synchronization.
4.2 Panel
Figure 4-1 illustrates the ZXSDR RSUC panel.
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Figure 4-1 ZXSDR RSUC Panel
4.3 Button
There is only one button (RST) on the ZXSDR RSUC panel.Table 4-1 describes the button.
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Table 4-1 ZXSDR RSUC Panel Button Description
Button
Description
RST
Reset button
4.4 Indicators
Table 4-2 describes ZXSDR RSUC panel indicators.
Table 4-2 ZXSDR RSUC Panel Indicator Description
Indicator
Color
Meaning
Description
RUN
Green
Running status
Always on: The RSU is resetting or starting up.
indicator
Blinking at 1 Hz: The RSU is functioning properly.
Blinking at 5 Hz: The RSU is downloading version
files.
Off: The RSU fails the self-check.
ALM
Red
Alarm indicator
Off: There is on alarm or the RSU is resetting,
starting up, or downloading version files.
Blinking at 5 Hz: There is a critical alarm.
Blinking at 1 Hz: There is a minor alarm.
LNK
Green
Optical link status
Always on: The optical connection is normal.
indicator
Off: The optical fiber fails.
Blinking at 5 Hz: This link is used as the clock
reference source and the phase lock loop (PLL) is
in the fast capture state.
Blinking at 0.25 Hz: This link is used as the clock
reference source and the phase lock loop (PLL) is
in the tracing state.
RF
Orange
RF working
Off: The RF has no output.
status indicator
On: The RF has output.
4.5 Panel Interfaces
Table 4-3 describes ZXSDR RSUC panel interfaces.
Table 4-3 Interfaces on the Front Panel of the ZXSDR RSUC
Interface
End A
End B
Description
ANT1(TX/RX)
RSU
Tx/Rx antenna
Connects to the Tx/Rx antenna for the Tx/Rx
major channel.
ANT2(RX)
RSU
Rx antenna
Connects to the antennal for the Rx minor antenna
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Interface
End A
End B
Description
Rx out
RSU
RSU with expanded
Frequency-point expansion output interface for
frequency points
outputting the Rx signals of the major channel.
RSU
Frequency-point expansion input interface for
Rx in
RSU with
expanded
inputting the Rx signals of the minor channel.
frequency
points
TX1/RX1
TX2/RX2
DBG
RSU
RSU
RSU
BBU or the upper-layer
Connects to the CPRI optical interface of BBU or
cascaded RSU
the upper-layer cascaded RSU
Lower-layer cascaded
Connects to the CPRI optical interface of the
RSU
lower-layer cascaded RSU
PC or testing equipment
Commissioning Ethernet interface and testing
(with a the testing
interface
board)
TEST
RSU
Testing equipment
Tx testing signal interface
MON
RSU
External equipment
Provides four dry-contact input interfaces and
RS-485 environment monitoring interface
AISG
RSU
Antenna
Connects to the AISG interface
POWER
RSU
RF power of the power
Power input interface
distribution module
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Table of Contents
Installing the RSU Module ..........................................................................................5-1
Connecting RSU Monitoring Cable .............................................................................5-9
Installing Optical Fibers Between BBU and RSU ......................................................5-10
Installing the Interconnected Cable Between BBU and RSU.....................................5-12
Installing the RF Jumper...........................................................................................5-15
5.1 Installing the RSU Module
Prerequisite
Before installing the RF module, wear the ESD wrist strap to avoid damaging the RF
module.
The RF cabinet has already been installed.
Context
Figure 5-1 shows the front panel of a ZXSDR RSUC.
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Figure 5-1 ZXSDR RSUC Panel
Steps
1. Determine the target slot, hold the handle of the module with one hand, support the
lower back of the module with the other hand, and try to make parallel the module and
the guiding plane, as shown in Figure 5-2.
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Figure 5-2 Step 1
2. Push the module slightly into the slot to more than half the depth of the slot, as shown
in Figure 5-3.
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Figure 5-3 Step 2
3. Change the place where exercise force and then push further the module with even
force, as shown in Figure 5-4.
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Figure 5-4 Step 3
4. Push the module until the inner side of the front panel closely touch the vertical shaft,
as shown in Figure 5-5.
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Figure 5-5 Step 4
5. Secure the module using five M5 x 20 screws, as shown in Figure 5-6.
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Chapter 5 Hardware Installation
Figure 5-6 Step 5
1. Fixing the cabinet with
5 M5x20 screws
2. Fixing the grounding
lug
6. Secure the ground lug.
As shown in Figure 5-6, the M5 x 20 screws secures the ground lug of the RSU module
to the ground points.
– End of Steps –
Result
Figure 5-7 shows the completion of installing the RF module.
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Figure 5-7 RSU Module Installed Completely
Follow-Up Action
After installing RSU modules, connect the RSU power cables to the RSU power
interfaces.RSU power cables have been routed to proper slots, as shown in Figure 5-8.
Figure 5-8 Power Cable Connecting the RSU
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5.2 Connecting RSU Monitoring Cable
Prerequisite
ZXSDR RSUC RF cabinet has already been installed.
The RSU module has already been installed.
Context
The RSU monitoring cable of the RF cabinet is routed to the right side of the RF cabinet
in delivery, as shown in Figure 5-9. After the RSU module is installed, insert the terminal
of the RSU monitoring cable to the MON (monitoring) interface of the RSU module.
Figure 5-9 RSU Monitoring Cable
Note:
If multiple RSU modules need to be monitored, only one RSU module needs to be
connected to the RSU monitoring cable.
Steps
1. Connect one end of the RSU monitoring cable to the MON (monitoring) interface of
the RSU module and fasten the screw.
2. Bundle the RSU monitoring cable.
Figure 5-10 shows the connected RSU monitoring cable.
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Figure 5-10 Installing the RSU Monitoring Cable
– End of Steps –
5.3 Installing Optical Fibers Between BBU and RSU
Prerequisite
The ESD wrist strap must be worn.
The baseband power cabinet and the RF cabinet have been independently installed.
Context
When the baseband power cabinet and the RF cabinet are installed side by side or they
are far away from each other, you need to connect BBU and RSU using optical fibers.
Pay attention to the following points when installing optical fibers:
Do not damage the optical fiber cladding during operations.
Protect optical fiber connectors and avoid contaminating them.
Do not forcibly bundle optical fibers.
Curve optical fibers at the turning.
Steps
1. Affix a temporary label.
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Affix temporary labels to both ends of the new optical fiber to set up a mapping. If
more than one optical fiber needs to be installed, use different labels to differentiate
optical fibers.
2. Route optical fibers.
a. Optical fibers go out from the side waterproof module of the baseband module and
go through the routing apertures on the base.
b. Then, optical fibers go through the routing apertures on the base of the RF cabinet,
traverse the waterproof modules, and connect to the six optical interfaces for RF
modules.
Figure 5-11 shows how optical fibers traverse the waterproof modules.
Figure 5-11 Waterproof Module through Which Optical Fibers Pass
3. Insert optical fiber connectors.
Insert optical fiber connectors according to the mapping on temporary labels.
Caution!
Insert optical fiber connectors tightly.
4. Bundle optical fibers.
Bundle and secure optical fibers along the routing troughs, which complies with
relevant regulations.
5. Affix an engineering label to an optical fiber.
Remove the temporary label for the optical fiber and affix an engineering label.
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Caution!
Protect an optical fiber with the winding tube when routing the optical fiber inside the
cabinet. Protect an optical fiber with the corrugated pipe when routing the optical fiber
outside the cabinet.
– End of Steps –
5.4 Installing the Interconnected Cable Between BBU
and RSU
Prerequisite
The ZXSDR RSUC cabinet has already been installed.
The BBU module and RSU module have already been installed.
Context
ZXSDR RSUCIn the system, optical fibers or SFP cables can be used to connect BBU and
RSU. During the stacked installation of the ZXSDR RSUC, a 2 m SFP high-speed cable
is recommended for interconnecting BBU and RSU. Figure 5-12 shows an SFP cable.
Figure 5-12 High-Speed Cable
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Steps
1. Affix temporary labels to both ends of the SFR cable, with markings 0-5 to set up
one-to-one mapping with interfaces TX0RX0 to TX5RX5 of BBU and six TX/RX
interfaces of RSU.
2. Insert one end of the SFP cable to a TX/RX interface of RSU.
3. Route the SFP cable along the routing trough and cabinet sides to the FS module of
BBU. The SFP cables connecting to the RSUs in slots 1 to 3 on the RF cabinet go
through the left routing apertures and those SFP cables go through the right apertures
if connecting to slots 4 to 6 on the RF cabinet, as shown in Figure 5-13 and Figure
5-14.
Figure 5-13 Layout of the SFP Cables in the RF Cabinet
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Figure 5-14 SFP Cable Layout
4. Insert SFP cables into the interfaces TX0RX0 to TX5RX5 of the BBU FS board
according to the markings 0-5, as shown in Figure 5-15.
Figure 5-15 FS Board Connecting to the BBU
5. Bundle SFP cables.
6. Remove temporary labels and affix engineering labels.
– End of Steps –
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5.5 Installing the RF Jumper
Prerequisite
The ZXSDR RSUC RF cabinet and other modules have already been installed.
Context
The RF jumpers for the three ZXSDR RSUC go through the waterproof module on the
right.
Remove the front baffle of the base before installing the RF jumpers and reseat the front
baffle after all jumpers are completely installed.
Steps
1. Connect the RF jumpers to ANT1 and ANT2 interfaces of RSU from left to right.
2. Wear the waterproof rubber plug after every two RF jumpers are installed.
3. Insert the horizontal and longitudinal slide blocks and use the hexagon ring wrench to
fasten them.
Caution!
Clamp the waterproof rubber plug tightly and make sure that the unused cabling
aperture wears the plug.
4. Repeat the preceding steps to install other RSU-related jumpers.
– End of Steps –
Result
Figure 5-16 shows the completion of installing the RF jumpers.
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Figure 5-16 Antenna Feeder Jumper Installed Completely
The RF jumpers go out from the base, as shown in Figure 5-17. The cables between
cabinets must be protected with protective tubes, without any exposed part of the cables
and the openings at two ends of these cables must be sealed, as shown in Figure 5-18.
Figure 5-17 Lead-Out of the Antenna Feeder Jumper
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Figure 5-18 Cables in Tubes
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Figures
Figure 2-1
ZXSDR RSUC Position in a Network ....................................................... 2-2
Figure 2-2
Outer View of ZXSDR RSUC ................................................................... 2-3
Figure 3-1
Schematic Diagram of the ZXSDR RSUC ................................................ 3-1
Figure 4-1
ZXSDR RSUC Panel ............................................................................... 4-2
Figure 5-1
ZXSDR RSUC Panel ............................................................................... 5-2
Figure 5-2
Step 1 ...................................................................................................... 5-3
Figure 5-3
Step 2 ...................................................................................................... 5-4
Figure 5-4
Step 3 ...................................................................................................... 5-5
Figure 5-5
Step 4 ...................................................................................................... 5-6
Figure 5-6
Step 5 ...................................................................................................... 5-7
Figure 5-7
RSU Module Installed Completely............................................................ 5-8
Figure 5-8
Power Cable Connecting the RSU ........................................................... 5-8
Figure 5-9
RSU Monitoring Cable ............................................................................. 5-9
Figure 5-10
Installing the RSU Monitoring Cable..................................................... 5-10
Figure 5-11
Waterproof Module through Which Optical Fibers Pass ........................ 5-11
Figure 5-12
High-Speed Cable................................................................................ 5-12
Figure 5-13
Layout of the SFP Cables in the RF Cabinet ........................................ 5-13
Figure 5-14
SFP Cable Layout................................................................................ 5-14
Figure 5-15
FS Board Connecting to the BBU......................................................... 5-14
Figure 5-16
Antenna Feeder Jumper Installed Completely ...................................... 5-16
Figure 5-17
Lead-Out of the Antenna Feeder Jumper ............................................. 5-16
Figure 5-18
Cables in Tubes ................................................................................... 5-17
Figures
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Tables
Table 1-1
Safety Symbols Description....................................................................... 1-2
Table 2-1
The Primary Functions of ZXSDR RSUC................................................... 2-4
Table 3-1
The functions of subsystem ....................................................................... 3-1
Table 3-2
ZXSDR RSUC Capacity Indices ................................................................ 3-3
Table 3-3
800 MHz Transmitter Indices ..................................................................... 3-4
Table 3-4
1.9 GHz Transmitter Indices ...................................................................... 3-5
Table 3-5
800 MHz Receiver Indices......................................................................... 3-6
Table 3-6
1.9 GHz Receiver Indices .......................................................................... 3-7
Table 3-7
Description of ZXSDR RSUC’s interfaces .................................................. 3-8
Table 4-1
ZXSDR RSUC Panel Button Description ................................................... 4-3
Table 4-2
ZXSDR RSUC Panel Indicator Description ................................................ 4-3
Table 4-3
Interfaces on the Front Panel of the ZXSDR RSUC ................................... 4-3
III
Tables
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Glossary
BBU
- BaseBand Unit
BS
- Base Station
BSC
- Base Station Controller
BTS
- Base Transceiver Station
CDMA
- Code Division Multiple Access
CPRI
- Common Public Radio Interface
MS
- Mobile Station
RF
- Radio Frequency
RSSI
- Received Signal Strength Indicator
RSU
- RF System Unit
SDR
- Software Defined Radio

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