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ninoy_122184
2011-11-18, 08:35 PM
Hello,

Can anybody share their knowledge on how to add a frequency band in Atoll,
I need to add a frequency band at 2.3GHz-10MHz band. can anyone explain on how to do it?

i will add rep and thanks to those who can explain it how..

borelij
2011-11-18, 08:37 PM
Just copy existing band and paste it in empty row. Double click to get properties and define what you need.

PS. copy and paste with keybouard, right click does not work...

ninoy_122184
2011-11-18, 08:59 PM
can you please explain it in more detail?coz i dont know where to start..

borelij
2011-11-18, 09:27 PM
right click on Transmitter -> Frequency bands
select row with existing freq band
CTRL C
select last (empty) row and CTRL V
Double click on new and change name, band, channels. ...

ninoy_122184
2011-11-18, 09:52 PM
thank you,, i will try..reps and thanks already added:handshake

ninoy_122184
2011-11-18, 10:25 PM
please clarify this to me,
i need to put the frequency of 2337.5Mz as the start frequency is the 2.3GHz-10Mz band correct?
coz the simulation on 2.5GHZ-10Mz frequency band has the same result..

borelij
2011-11-21, 10:22 PM
frequency affects propagation - you can create one study at 2.3 and one study at 2.5 and then compare to see the effect.
You need to define start frequency and number of channels, so if you have 30 MHz block (2335-2365MHz for example), than your start is 2335 and your start channel is 0, stop channel is 2. If you have 2 or more blocks than you start at lowest freq and then exclude chanels you dont need.

ninoy_122184
2011-11-21, 10:37 PM
frequency affects propagation - you can create one study at 2.3 and one study at 2.5 and then compare to see the effect.
You need to define start frequency and number of channels, so if you have 30 MHz block (2335-2365MHz for example), than your start is 2335 and your start channel is 0, stop channel is 2. If you have 2 or more blocks than you start at lowest freq and then exclude chanels you dont need.

i already created a study on 2.5GHz and 2.3GHz but the result is the same,i dont why...and why you said that the stop channel is 2?:handshake

borelij
2011-11-22, 04:01 AM
stop channel = 2: from example with 30MHz block, channel0=2335-2345, ch1=2345-2355, ch2=2355-2365MHz

propagation related prediction must depends on frequency. Check your propagation model, check if you really change freq band on all cells.

ninoy_122184
2011-11-22, 06:53 AM
stop channel = 2: from example with 30MHz block, channel0=2335-2345, ch1=2345-2355, ch2=2355-2365MHz

propagation related prediction must depends on frequency. Check your propagation model, check if you really change freq band on all cells.

thanks..on the main matrix what is the propagation to be use exactly? is it standard propagation model,cost-hata or okumura-hata?which is correct for wimax simulation?

borelij
2011-11-22, 04:27 PM
thanks..on the main matrix what is the propagation to be use exactly? is it standard propagation model,cost-hata or okumura-hata?which is correct for wimax simulation?

Depends what maps do you have (resolution, DTM, clutter)m what freq band and if you have mobile or fixed users. For mobile: SPM, Hata, for fixed: WLL, SPM, Sakagami
Calibration will improve results.

ninoy_122184
2011-11-22, 06:22 PM
Depends what maps do you have (resolution, DTM, clutter)m what freq band and if you have mobile or fixed users. For mobile: SPM, Hata, for fixed: WLL, SPM, Sakagami
Calibration will improve results.

fixed users...thanks for the useful information that you share..:handshake