[ath9k-devel] AR9280 - OFDM RX errors?

[Deep Shah <deep.shah@strixsystems.com>]

Adrian Chadd <adrian.chadd <at> gmail.com> writes:

> 
> On 8 February 2011 06:10, Adrian Chadd <adrian.chadd <at> gmail.com> wrote:
> 
> > The throughput problems I'm having can be traced down (so far) to
> > -lots- of CCK/OFDM decoding errors. I get CRC errors and when I turned
> > on all the phy error mask bits, I also get various OFDM and CCK
> > decoding errors, with error 17 (OFDM timing) topping the lot.
> 
> As a followup, I've just disabled ANI entirely and manually written in
> values to the sfcorr/sfcorr_low registers to disable OFDM weak
> detection. This significantly reduces the number of CRC/OFDM timing
> PHY errors when no traffic is going on, but there are still
> significant OFDM timing/CRC errors when RX'ing.
> 
> What else should I look at?
> 
> Adrian
> 

Hi All,

I think you all have debugged this issue in depth and will be very much thankful
if you can help me out in one similar issue which I am facing currently. Thank
you very much in advance. 

I am facing very similar issue with throughput. I am using 9390 as my chipset
and I am using madwifi driver for the same. With this configurations of hardware
and software, I am running my own application for creating 11n point to point
network. 

In this case, I am facing issues with throughput. When I increase distance. my
throughput becomes very low in case of 11n, while in case of legacy mode, I am
facing less issues in throughput. I tries to print some counter values for OFDM
phy erros and CCK phy erros, which increasing drastically while running
throughput test. 

Can you please give me some information about what can be done to resolve this? 

Your support will be really helpful for me to debug and resolve this issue. 

Thanks,
Deep