144865547 Configuring CONNECT

8/10/2019 144865547 Configuring CONNECT

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1 Copyright 2011 AIRCOM International

Configuring CONNECT




Objectives

Items to configure:• The CONNECT Preferences

• Link types

• Modulation types

• Microwave antennas

• Radio equipment

• Link terminal equipment

• Feeders• T/I objectives

• Link status values

• Channel plans




Preferences – Connect Tab

• Define the Default MTTR (Mean Time To

Repair) for the Project.

• De-selecting the “Auto Terrain

Roughness Factor Calculation” will

enable faster link creation – but this must

be performed later during LinkCalculations.

• Highlighting the selected link will place a

broad colour band over the link in the 2-D

view for ease of identification




Preferences – Connect Tab (2)

• Use the T/I objective from Radio

Equipment – depitcs that if no

information is in the T/I Objectives for

the radio, then the single value from the

Radio Equipment Database will be

assumed

• Ignore Cross-Polarisation Outage – this

is used to stop the tool trying to perform

calculations on non-cross polarised links




Preferences – Diffraction Tab

• Define which method of diffraction

calculation will be performed.

• Typically, use Terrain averaging to model

diffraction

• If region being planned has high levels ofKnife edges (ie buildings or mountains),

then the user should choose to plan using

one of the knife edge models




Preferences – Earth Radius Tab

• Define the default K Factor to be used

when performing link analysis

• The default K-Factor should be identified

for the region, being planned and

obtained from ITU-R P.530-12






Microwave Antennas

• Mask is required for

accurate results

• Can be imported or

entered manually from

manufacturer data (and

then exported for futureuse)

• All planes must be

entered (VV, HH, VH &

HV)




Required? Fields Name Abbreviated Name Database Column

Y Antenna Manufacturer ANTMAN Manufacturer

Y Antenna Model number MODNUM Description

Y Comment DESC1,2 Description

Y FCC/ETSI ID number N/A FCCID

Y Pattern ID number PATNUM PATTERNID

Y Date of data DTDATA Description

Y Manufacturer ID Number See file naming convention Manufacturer

Y frequency range LOWFRQ , HGHFRQ

First value =

MinOpFreq, Second

value = MaxOpFreq

Y mid-band gain MDGAIN Gain

Y Half-power beam width ELWIDT

HalfPowerBeamWidth

Y polarization POLARI Polarisation

Y angle(1) + +relative gain in dB NUPOIN /FSTLST Mask

Microwave Antennas

Native NSMAAntenna import /

export




Defining Radio Equipment

The parameters for radio equipment can usually be found in the manufacturer’s

datasheets. Vendors now commonly supply transmit spectrum density mask and receiveselectivity mask information, which can be stored on radio equipment in CONNECT.

These values can then be used to calculate interference in a more efficient and

straightforward way, rather than using T/I objectives tables.




Defining the Costs for Radio Equipment

• When defining radio equipment, you can define the cost of a radio on the Costing tab

of the Radio Equipment dialog box. This data can then be used along with other coststo arrive at the total cost of a site. You can select the name of the supplier from a list

(defined in the Equipment Supplier properties dialog box) and the cost of the radio

equipment.




Defining the Parameters of Radio Equipment

When defining radio equipment, you can specify the equipment specifications

on the Info tab of the Radio Equipment dialog box.




Radio Equipment Configuration

When defining radio equipment, you can provide frequency and capacity information on

the Configuration tab of the Radio Equipment dialog box.




Radio Equipment Configuration

When defining radio equipment, you can provide frequency and capacity information on

the Configuration tab of the Radio Equipment dialog box.




Where:

T : system baud period (ns)

W : signature width (GHz)la : average of (linear) signature

tr : reference delay for la (ns).

Can be modified in the Modulation Types

found under the Options Menu.

Used in the calculation of Multipath

propagation

Kn Values




Radio Equipment- Loss

The losses can be

manually edited.

However the values

should be entered

according to the

Vendor supplied

data.




Radio Equipment - Signature

• Required for calculation of the

outage due to selectivemultipath fading

• Not required for frequencies of

38GHz or greater

• Signature and Dispersive

Fade Margin (Ad) can befound from manufacturer data

(curve or table)

• The Approximation Method

can be used (Kn value for the

Modulation technique is

required)• CONNECT is able to calculate

the dispersive fade margin

value from the Signature

Information




10-3 BER signature-curves for 15 GHz FlexiHopper

Signature Curve




Defining Transmit Spectrum DensityMasks for Radio Equipment

• When defining radio equipment, you can define the transmit spectrum density mask on

the Tx Spectrum tab of the Radio Equipment dialog box.

The transmit spectrum density mask and the receive

selectivity mask are used to calculate interference.




Defining Receive Selectivity Masks forRadio Equipment

• When defining radio equipment, you can define the receive selectivity mask on the Rx

Selectivity tab of the Radio Equipment dialog box.

The receive selectivity mask, and transmit spectrum density

mask, are used to calculate interference.




Defining Link Terminal Equipment

• It is recommended that you include the necessary terminal equipment that you intend

to use in your project; for example multiplexers, indoor units and so on, before youstart planning.






• Used in Interference analysis

• One T/I Objective for each

Carrier BW to Interferer BW in

each Freq Band

• e.g. 23GHz 16x2 (28MHz) v

23GHz 2x2 (3.5MHz)

• Objectives can be set by Radio

Capacity – PDH / SDH or IP

Throughput

T/I Objectives




• Typically use either National

Regulator Channel Plans or ITU

plans

• ID should be something that is

easy for the planner to identify

when selecting frequencies

• A channel Band should be

created for each Channel

Bandwidth used

• Enter Channel Name, Lo Freq &Hi Freq

Bands/Channels

Documents

144865547 Configuring CONNECT