[ath9k-devel] AR9220 AP mode 's throughput with ath9k

[kang haiyang <hykang@dongniannetworks.com>]

hi,

I measured them with Ixchariot (iperf is used also, almost same, but a
little better). The distance between AP and client is about 1 meter, and
i also tried with two different antennas.

I captured the packet between the client and ap, and saw the packets
from AP sent to client are with lots of CRC errors.

The problem is that with the same method and environment, th 20Mhz is
not so bad, and there should be no channel interference because there
are no APs and clients observed on the channel we are working (channel 36).

kang haiyang

On 06/02/2011 03:22 PM, Adrian Chadd wrote:
> Hi!
> 
> On 2 June 2011 15:07, kang haiyang <hykang@dongniannetworks.com> wrote:
>> hi all,
>>
>> Is there anyone who have evaluated ar9220's throughput with ath9k?
>>
>> With this card and ath9k, the average tx throughput is about 120Mbps. I
>> thought with this card, it should be very easy to get 180Mbps (I can get
>> this result with my 9160 card).
> 
> How are you measuring this?
> 
>> With 20Mhz bandwith, under same environment, i can get more than 90Mbps'
>> tx throughput.
> 
> Again, how are you measuring it?
> 
>> I have tested two cards from different vendors. And from packets
>> captured, it shows that there are lots of CRC errors, and most of the
>> packets are with MCS 12~15.
> 
> Are you saying there's a lot of CRC errors on packets that you receive?
> 
> 
> 
> Adrian
>