[ath9k-devel] CSI support

[Peizhao Hu <peizhao.research@gmail.com>]

actually, how is this CSI information different from the spectral scan 
feature in the ar92xx chipset??


On 26/06/13 02:04, Ali Abedi wrote:
> Hello everyone,
>
> I am also interested in accessing CSI. Please update us as soon as you 
> got some good news.
>
> Best,
> Ali
>
>
> On 13-04-02 08:18 AM, Nikolay Makarov wrote:
>> Dear Andres,
>>
>> Adrian preliminary confirmed it is possible to get CSI out of 
>> hardware. He helped me to send an internal request to Atheros to 
>> assist on the issue. We sent the request 30 of March.
>>
>> I am not clear what to do next and I am waiting directions from 
>> Adrian at the moment.
>>
>> I think that it might be helpful to send to Atheros another request 
>> from you.
>>
>> Best regards,
>> Nikolay Makarov
>>
>>
>> On Tue, Apr 2, 2013 at 1:52 PM, Andr?s Garc?a Saavedra 
>> <agsaaved at it.uc3m.es <mailto:agsaaved@it.uc3m.es>> wrote:
>>
>>     Hi Adrian, Nikolay,
>>
>>     any luck on this line? I am also interested in obtained CSI
>>     information from hw for research purposes.
>>
>>     Thanks!
>>     Andr?s
>>
>>
>>     On Sun, Mar 10, 2013 at 10:43 AM, Nikolay Makarov
>>     <opnmakarov at gmail.com <mailto:opnmakarov@gmail.com>> wrote:
>>
>>         Thank you very much Adrian. I would appreciate your help.
>>
>>         ? ?????????,
>>         ??????? ???????
>>         +7 (926) 284 80 81 <tel:%2B7%20%28926%29%20284%2080%2081>
>>
>>         On 10.03.2013, at 10:21, Adrian Chadd <adrian@freebsd.org
>>         <mailto:adrian@freebsd.org>> wrote:
>>
>>         > On 8 March 2013 23:16, Nikolay Makarov <nmakarov@live.ru
>>         <mailto:nmakarov@live.ru>> wrote:
>>         >> Sorry. My bad.
>>         >>
>>         >> The CSI (channel state information) is similar to RSSI
>>         which describes the
>>         >> power of received signal. But unlike RSSI, CSI is energy
>>         over multiple
>>         >> subcarriers. In 802.11 g/n, there are 64 subcarriers. So
>>         CSI is a vector
>>         >> with 64 elements, each is a complex value. At the physical
>>         layer of wifi,
>>         >> they will do channel estimation, CSI is the channel
>>         estimation results for
>>         >> every subcarrier.
>>         >
>>         > Oh, right. Yes. I think there's a way to get the CSI out of
>>         the hardware.
>>         > I don't know any ETA for that though; sorry.
>>         >
>>         > I'll poke some people to see if I can get some
>>         documentation about how
>>         > to get CSI values and how to interpret them.
>>         >
>>         > Thanks,
>>         >
>>         >
>>         >
>>         > Adrian
>>         _______________________________________________
>>         ath9k-devel mailing list
>>         ath9k-devel at lists.ath9k.org <mailto:ath9k-devel@lists.ath9k.org>
>>         https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>>
>>
>>
>>
>>
>> -- 
>> ? ?????????,
>> ??????? ???????
>> +7 926 284 80 81
>>
>>
>> _______________________________________________
>> ath9k-devel mailing list
>> ath9k-devel at lists.ath9k.org
>> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>
>
>
>
>
>
> _______________________________________________
> ath9k-devel mailing list
> ath9k-devel at lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel


-- 
Regards;

Peizhao

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.ath9k.org/pipermail/ath9k-devel/attachments/20130816/1fffc773/attachment-0001.htm