03-1 xpand ip system configuration 2010-08-10-r1a

1

11 Rev 2010-08-10

R1A

XPAND IP

System Configuration

2

2 03-1 XPAND IP System ConfigurationR1A

Evolution XPAND IP ODU

• The ODU has 3 Identification Lables: Tranceiver, Diplexer and Complete ODU

• The transceiver covers a complete band, but Diplexers is divided into sub-

bands.

• The diplexer is symmetrical, i.e. by turning mounting 180 deg, it changes from

upper to lower Sub-band

Transceiver UnitDiplexer Unit

ODU

+ =

3


Diplexer Types

• There two types for the diplexer, 5-11 GHz and 13-38GHz

Diplexer 5-11 GHz Diplexer 13-38 GHz

4


Evolution XCVR Label

B

For XPAND IP,

XCVR TYPE B must be used

5


Diplexer Labels

6


Diplexer Sub-Bands

• The Diplexer covers a given pass band

• Most frequency bands are divided in to four parts, two lower and two upper

• Diplexer is symmetrical, i.e. by turning mounting 180 deg, it changes from upper to lower

8 GHz (7.9 - 8.4 GHz)

ODU Article Code : FU08AAA0A-suffix

Duplex spacing : 266 MHz

Sub-band

ODU

suffix TX-low

Tuning range * Low sub-band

Tuning range * High sub-band

ODU

suffix

TX-high

1 -21LA 7919 - 8013 8185 - 8279 -21UA

2 -22LA 8031 - 8122 8297 - 8388 -22UA

Example

7


RF Coupler

• An RF coupler can be used in 1+1 HSB, 1+1 FD or 2x(1+0) configurations to connect 2 ODUs

to one antenna port.• The RF coupler loss is according to the table below:

Coupler, markingCoupler, side view

8


Integrated Antenna

1+0 / 30 cm antenna 1+1 / 60 cm antenna

• Integrated antenna 7 - 38 GHz

• 30 - 180 cm size

• 1+0 & 1+1 HSB/FD

• ODU mounted on “the Spider”

• Turned 90o for polarisation change

• Spider mount also used for pole mount

9

9 03-1 XPAND IP System Configuration

R1A

• Dual polarised system – CCDP:

• Increased spectrum efficiency per link ~13

bit/s/Hz

• XPIC - XPolar Interference Canceller:

• Standard in all Evolution Series XPAND IP

RIUs

XPAND IP - 800 Mb/s with 50E1/32T1

Integrated

XPIC

Integrated OMT (Ortho Mode Transducer)

10

10 03-1 XPAND IP System Configuration

R1A

• The interface between the ODU or RF-coupler and the antenna feeder system is

rectangular waveguide except 5 GHz which is using coaxial interface. (N-connector).

• The ODU and RF-Coupler aluminum flanges are protected by chromate coating.

Antenna Interface to ODU

11


Equipment Reference Points

Principle block diagram for a split mount radio system with Diplexer

12


ODU Output Power, XPAND IP

Please refer to the equipment technical spec. for more details

13


Receiver Threshold, XPAND IP

Please refer to the equipment technical spec. for more details

14


1+0 Terminal Configuration

The most basic configuration is an unprotected 1+0 link with only Ethernet traffic.

Optionally it can be configured with up to 75 E1 signals.

15


HSB Terminal Configuration

The HSB configuration provides protection of both Ethernet and TDM traffic. The example

contains 50 E1 signals but up to 75 E1s is available by using two IFUs and a connection panel.

The two ODUs can be connected to one antenna with an RF coupler or to two antennas for Space

Diversity. The RF coupler can be mounted directly the antenna or with a short flexible waveguide, both

asymmetrical and symmetrical coupler is available.

The use of Space Diversity/Dual Antenna reduces the RF loss and provides path diversity, which can

improve system performance (subject to frequency band and path type and length).

16


n+0 Ethernet and 1+1 E1 Configuration

An n+0 terminal can be configured in a mixed mode with traffic aggregation between the radio channels

for the Ethernet traffic and 1+1 protection for the E1 traffic. In this mode the E1 signals are transmitted

on channel one and two and on the receive side the hitless switch selects the best channels.

17


2+0 terminal Ethernet and E1

n+0 terminals features traffic aggregation of two to eight radio channels. Where needed up to 75 E1

circuits can be mapped into channel one. Couplers are used as needed to combine two ODUs to one

antenna port. For systems with more than four radios a solution with RF-branching is recommended for

improved system gain. ODUs connected to a Coupler must be in the same sub-band.

18


4+0 terminal, Ethernet only





19


4+0 terminal, Ethernet and E1 with 1+1 protection





20


Traffic Node:1+0 4 dir Node Ethernet and E1 interface

Traffic nodes with up to four radio directions can be made. Each direction can have 1+0, 2+0/1+1or HSB

configuration. Both Ethernet traffic and E1 traffic can be switched between all directions and local

interfaces. E1 signals can be connected to a DXC and an STM-1 interface. Nodes with more than one

IFU require a connection panel for two or four IFUs.

21


Traffic Node: Add/Drop HSB terminal Ethernet and E1

Traffic nodes with up to four radio directions can be made. Each direction can have 1+0, 2+0/1+1or HSB

configuration. Both Ethernet traffic and E1 traffic can be switched between all directions and local

interfaces. E1 signals can be connected to a DXC and an STM-1 interface. Nodes with more than one

IFU require a connection panel for two or four IFUs.

22


Multi-channel Long Haul systems

System highlights:

• Frequency bands: 4, 5, L6, U6, 7, 8, 10, 11 GHz

• Multi channel system, up to 10 RF

channels on one polarization

• Transceivers cover full band.

• Most power efficient system in the

market (<80W)

• Gigabit Ethernet Interface (up to 1.6 Gbit/s)

• Space Diversity IF Combiner

• CCDP/XPIC for 28 MHz & 40 MHz

channels

• Outdoor version with 4 channels per polarization

These systems are most commonly indoor mounted but a split mounted version is also available. The

system comprises one to four IFUs with the Gigabit Interface and Controller unit and Radio Interface

Units, power supply connection to the system with circuit breakers, up to eight XCVRs and the low loss

RF branching system. Connection to the antenna is by elliptical WG. The indoor system is mounted in a

19” rack.

The base band functions in this configuration are identical to other systems. The difference is the low loss

branching system which uses RF channel filters and circulators which gives a dramatically lower loss

compared to systems with RF-couplers. The combiner space diversity option gives improved

performance to difficult links and adjacent and co-channel operation allows for efficient spectrum

utilization.

Main Features

· Combiner Space Diversity

· Co-channel operation with XPIC

· Adjacent channel operation

· Low Power Consumption

· Transceiver units covers complete frequency band

· Native Ethernet with aggregated Ethernet capacity of 1.6 Gbit/s

23


28/30/40 MHz

V

H

• ACAP (Adjacent Channel Alternating Pol.)

• up to 5 ch. on one polarisation.

• up to 10 ch. on dual polarisation.

CCDP (Co-Channel Dual Polarisation)• Up to 10 ch. using 5 RF

channels

1

2

3

4

5

6

7

8

9

10

28/30/40 MHz

V

H

1 2 3 4 5 6 7 8 9 10• ACCP (Adjacent Channel Common

Pol.)

• up to 10 ch. on one polarisation.

28/30/40 MHz

V

H

1 2 3 4 5

6 7 8 9 10

Long Haul System Spectrum utilization

24


XCVR Interface plates

25


XCVR mounting

26


Branching Unit Long Haul 1+1

Rx

Tx

Wave Guide Flange

27


Tx Filters 3+0

28


Rx Filters 3+0

29


Branching block diagrams, 4 XCVRs

The branching system is very flexible and supports adjacent and co-channel operation in all frequency

bands for both ~28 and 40 MHz channel spacing.

30


Branching block diagrams, 8 XCVRs

31


8+0 System Long Haul Optimized

The Long Haul Optimized system uses a low loss RF-branching system combining up to 8 channels to

one antenna port. Dual polarized branching and antenna is also an option. The Branching system contains

narrow band RF-filters for each channel, connecting the channels together. In Space Diversity

configuration, two receive branchings are used in parallel connecting the two antennas to two receivers

inputs for each channel. The received signals are combined in-phase in the transceiver unit.

03-1 xpand ip system configuration 2010-08-10-r1a

Documents