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12-08-2015 08:07 AM
My customer has a serious question and doubt in Aruba AP's receiver sensitivity comparing to our competitor. They already understand the benefit of Client-Match. But Receiver sensitivity will be another criteria to deploy AP to coverage large of user.
My customer is Mobile Service Operator which looking AP to do WIFI-Offloading. They install AP around 40,000+ AP per year in public area. So the receiver sensitivity is their big issue.
Comparing between AP215 and Cisco 2700, example.
on 802.11ac-40MHZ, MCS9, our sensitivity is -61 dB, Competitor is - 69 dB. We have 8 dB gap
on 802.11n-5Ghz-40MHz MCS7, our sensitivity is -69 dB, Competitor is -75 dB. we have 6 dB gap
So how should i response to my customer about this parameter which is write on our Datasheet?
Does our datasheet is wrong ? or it provides too few information due to they grouping MCS7,15,23?
on 802.11n-5Ghz-40MHz MCS23, our sensitivity is -69 dB, Competitor is -71 dB. we are a litte bit improve ?
What is the result in the real environment ? How much it affect on coverage? 6 dB mean 4 times of power drop?
Please kindly help me to figure out this. Thank you in advance
Solved! Go to Solution.
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12-08-2015 08:42 AM - edited 12-08-2015 08:45 AM
Aruba is per chain, Cisco is aggregate
Aruba
So for rx -90 dBm per chain becomes -94.8 dBm aggregate on AP-215
For tx 18 dBm per chain become 22.8dBm aggregate on AP-215
Cisco is 4 chains so to get back to per chain
Rx
-96 dBm aggregate becomes -90 dBm per chain
Tx
23 dBm aggregate becomes 17 dBm per chain
Also, we knowingly take some hit on 2.4 rx because of the filtering in place to protect against co location with DAS systems. Cisco does not do that.
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Re: Different in Aruba AP's receiver sensitivity compare to competitor
Re: Different in Aruba AP's receiver sensitivity compare to competitor
12-08-2015 08:46 AM
Hi E Johnson,
Could you please provide me how to calculate and compare between "per chain" and "Aggregate" ?
Thank you in advance.
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12-08-2015 08:49 AM
The difference between per chain and aggregate is
10*log(#antennas)
for
Antennas Per chain to Aggregate
2 3 dB
3 4.8 dB
4 6.0 dB
....
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Re: Different in Aruba AP's receiver sensitivity compare to competitor
Re: Different in Aruba AP's receiver sensitivity compare to competitor
12-08-2015 08:53 AM
Hi E Johnson,
Wow, and thank you very much for kind support.
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Re: Different in Aruba AP's receiver sensitivity compare to competitor
Re: Different in Aruba AP's receiver sensitivity compare to competitor
12-08-2015 09:02 AM
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Re: Different in Aruba AP's receiver sensitivity compare to competitor
Re: Different in Aruba AP's receiver sensitivity compare to competitor
12-08-2015 09:17 AM
Here are just a couple charts showing competitive performance between the AP-215 and Cisco 2702, taken indoors in an office environment at different distances.
There is no realized performance gain, and in fact, the AP-215 outperforms the 2702 out to 120ft non-line-of-sight. As clients get closer, the performance gap is even widened.
Sr. Technical Marketing Engineer
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Re: Different in Aruba AP's receiver sensitivity compare to competitor
Re: Different in Aruba AP's receiver sensitivity compare to competitor
12-08-2015 09:18 AM
These are also relevant:
https://www.youtube.com/watch?v=AO0mzXfOA8Q
https://www.youtube.com/watch?v=F_X8X5jCgRg
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Re: Different in Aruba AP's receiver sensitivity compare to competitor
Re: Different in Aruba AP's receiver sensitivity compare to competitor
01-03-2016 08:20 PM
E Johnson,
Are there any document, either from Cisco or Aruba, show that cisco is per aggregate and Aruba is per chain?
Thank You
piyaphol@hpe.com wrote:My customer has a serious question and doubt in Aruba AP's receiver sensitivity comparing to our competitor. They already understand the benefit of Client-Match. But Receiver sensitivity will be another criteria to deploy AP to coverage large of user.
My customer is Mobile Service Operator which looking AP to do WIFI-Offloading. They install AP around 40,000+ AP per year in public area. So the receiver sensitivity is their big issue.
Comparing between AP215 and Cisco 2700, example.
on 802.11ac-40MHZ, MCS9, our sensitivity is -61 dB, Competitor is - 69 dB. We have 8 dB gap
on 802.11n-5Ghz-40MHz MCS7, our sensitivity is -69 dB, Competitor is -75 dB. we have 6 dB gap
So how should i response to my customer about this parameter which is write on our Datasheet?
Does our datasheet is wrong ? or it provides too few information due to they grouping MCS7,15,23?
on 802.11n-5Ghz-40MHz MCS23, our sensitivity is -69 dB, Competitor is -71 dB. we are a litte bit improve ?
What is the result in the real environment ? How much it affect on coverage? 6 dB mean 4 times of power drop?
Please kindly help me to figure out this. Thank you in advance
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