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Thread: Coverage Vs adding 2sd Carrier

  1. #1
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    Default Coverage Vs adding 2sd Carrier

    Hi friends,

    When adding a second carrier, the power per carrier is reduced from 30w to 20w. The CPICH Power is the same in both cases (33dm).

    I'm asking if this reduction of the NodeB total power will reduce the coverage?

    Regards

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  3. #2
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    Thumbs up Re: Coverage Vs adding 2sd Carrier

    Quote Originally Posted by Kamatchou View Post
    Hi friends,

    When adding a second carrier, the power per carrier is reduced from 30w to 20w. The CPICH Power is the same in both cases (33dm).

    I'm asking if this reduction of the NodeB total power will reduce the coverage?

    Regards
    Hi,

    no change in the coverage areaa s the CPICH power is same, thanks.
    regards,

  4. #3
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    Default Re: Coverage Vs adding 2sd Carrier

    of course you get reduction if you measured these values !
    how did you get the cpich power value: measured or just read the setting from the OMC nodeb config?
    how did you do the config for 2nd carrier: two transmitters combined via hybrids oder a multicarrier TX/PA?
    Last edited by wirelessboy; 2010-12-23 at 09:00 PM

  5. #4
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    Default Re: Coverage Vs adding 2sd Carrier

    Quote Originally Posted by wirelessboy View Post
    of course you get reduction if you measured these values !
    how did you get the cpich power value: measured or just read the setting from the OMC nodeb config?
    how did you do the config for 2nd carrier: two transmitters combined via hybrids oder a multicarrier TX/PA?


    No serving area reduction, for sure!

  6. #5
    BannedUser Reputation: -3
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    Default Re: Coverage Vs adding 2sd Carrier

    Different vendor/RF equipment type/ antenna connection will give different results.

  7. #6
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    Default Re: Coverage Vs adding 2sd Carrier

    thanks men you are great

  8. #7
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    Default Re: Coverage Vs adding 2sd Carrier

    Hi

    As the CPICH power didn't change so the coverage footprint won't either. But as your power is reduced service Quality, number of users supported, data rates, HSDPA throughput... all will be affected. so the bottom line will be: coverage no change Capacity and quality will both be impacted

  9. #8
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    Default Re: Coverage Vs adding 2sd Carrier

    Quote Originally Posted by Kamatchou View Post
    Hi friends,

    When adding a second carrier, the power per carrier is reduced from 30w to 20w. The CPICH Power is the same in both cases (33dm).

    I'm asking if this reduction of the NodeB total power will reduce the coverage?

    Regards
    Normally, I would anticipate an increase in the reach of the DPDCH as a result of the 2nd carrier addition, due to the reduced loading per carrier. But since, you mention that the power per carrier has been reduced (combiner loss?), and CPICH power is same, then DPDCH coverage should reduce.
    Last edited by firstmaxim; 2010-12-25 at 01:50 PM

  10. #9
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    Default Re: Coverage Vs adding 2sd Carrier

    Quote Originally Posted by firstmaxim View Post
    Normally, I would anticipate an increase in the reach of the DPDCH as a result of the 2nd carrier addition, due to the reduced loading per carrier. But since, you mention that the power per carrier has been reduced (combiner loss?), and CPICH power is same, then DPDCH coverage should reduce.
    Hi firstmaxim, can you explain further? I'm eager to understand.. Thanks..

  11. #10
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    Default Re: Coverage Vs adding 2sd Carrier

    the coverage will not change but Capacity and quality will both be impacted.

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