[ath9k-devel] CSI support

[ath9k-devel] CSI support

[Nikolay Makarov]

Hello everybody!

Is there any chanse a CSI support will be added to ath9k?

Best regards,
Nikolay Makarov
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[ath9k-devel] CSI support

[Adrian Chadd]

CSI support? Please be more specific? :)


Adrian


On 7 March 2013 03:30, Nikolay Makarov <nmakarov@live.ru> wrote:
> Hello everybody!
>
> Is there any chanse a CSI support will be added to ath9k?
>
> Best regards,
> Nikolay Makarov
>
> _______________________________________________
> ath9k-devel mailing list
> ath9k-devel at lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>

[ath9k-devel] CSI support

[Nikolay Makarov]

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.

Best regards,
Nikolay Makarov


On Fri, Mar 8, 2013 at 3:44 AM, Adrian Chadd <adrian@freebsd.org> wrote:

> CSI support? Please be more specific? :)
>
>
> Adrian
>
>
> On 7 March 2013 03:30, Nikolay Makarov <nmakarov@live.ru> wrote:
> > Hello everybody!
> >
> > Is there any chanse a CSI support will be added to ath9k?
> >
> > Best regards,
> > Nikolay Makarov
> >
> > _______________________________________________
> > ath9k-devel mailing list
> > ath9k-devel at lists.ath9k.org
> > https://lists.ath9k.org/mailman/listinfo/ath9k-devel
> >
>
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[ath9k-devel] CSI support

[Adrian Chadd]

On 8 March 2013 23:16, Nikolay Makarov <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] CSI support

[Nikolay Makarov]

Thank you very much Adrian. I would appreciate your help.

? ?????????,
??????? ???????
+7 (926) 284 80 81

On 10.03.2013, at 10:21, Adrian Chadd <adrian@freebsd.org> wrote:

> On 8 March 2013 23:16, Nikolay Makarov <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] CSI support

[Andrés García Saavedra]

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@gmail.com>wrote:

> Thank you very much Adrian. I would appreciate your help.
>
> ? ?????????,
> ??????? ???????
> +7 (926) 284 80 81
>
> On 10.03.2013, at 10:21, Adrian Chadd <adrian@freebsd.org> wrote:
>
> > On 8 March 2013 23:16, Nikolay Makarov <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
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>
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[ath9k-devel] CSI support

[Nikolay Makarov]

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@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@gmail.com>wrote:
>
>> Thank you very much Adrian. I would appreciate your help.
>>
>> ? ?????????,
>> ??????? ???????
>> +7 (926) 284 80 81
>>
>> On 10.03.2013, at 10:21, Adrian Chadd <adrian@freebsd.org> wrote:
>>
>> > On 8 March 2013 23:16, Nikolay Makarov <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
>> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>>
>
>


-- 
? ?????????,
??????? ???????
+7 926 284 80 81
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[ath9k-devel] CSI support

[Ali Abedi]

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




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[ath9k-devel] CSI support

[Peizhao Hu]

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

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[ath9k-devel] CSI support

[Wai Kay]

I'm also interested in this too and don't mind sending Atheros a request
for it. But how do I go about contacting Atheros?

Regards,
Wai Kay

Nikolay Makarov <opnmakarov <at> gmail.com> writes:

>
>
> 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> 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> wrote:
>
>
> Thank you very much Adrian. I would appreciate your help.
> ? ?????????,
> ??????? ???????+7 (926) 284 80 81
>
>
>
>
> On 10.03.2013, at 10:21, Adrian Chadd <adrian <at> freebsd.org> wrote:
> > On 8 March 2013 23:16, Nikolay Makarov <nmakarov <at> 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 listath9k-devel <at> lists.ath9k.orghttps://
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
>
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[ath9k-devel] CSI support

[Ali Abedi]

Hello,

Is there any update on how to access the channel state information?

Best regards,
Ali

[ath9k-devel] CSI Support

[Kamran Nishat]

Hi,
there is a tread of CSI support on the list with one reply from Adrian
saying Atheros HW does support it but no further reply. Can anyone please
enlighten us.
Kamran
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