Linux/WL1807MOD: DFS - radar signal not detected

Hello,

Did you make sure you have configured the regulatory domain correctly?
There are some radars different between one domain to the other and we detect accordingly.

Best Regards,
Eyal

Hi Eyal,

the WiFi was tested under EU condition.

Host platform Sitara AM3352BZCZA100

Module: TI WL1807MODGIMOC

Hi Eduard,

Can you send us your device configuration (wlconf dump file of wl18xx-conf.bin)?
In addition, can you provide the radar parameters used for the test?

Best Regards,
Eyal

Hi Eyal,

wlconf dump and results from the testing are attached.  The results are the same for AU, EU country code.  it was tested on 11a mode 5260 MHz.

Thanks

BR

Eduard

wl1807_dfs.zip

Hi Eduard,

As a debug step, can you limit the BW to 20MHz and see if it passes?

Can you also please specify which spec exactly you referring to? It is not mentioned in your report

Can you also share more detailed data and report similar to the one we share for the TI module with a similar table to the one below ?

In addition, what is the radar frequency with respect to the DUT’s frequency?

Best Regards,

Eyal

Hi Eduard,

Any update on this issue? Is it still open?

BR,
Eyal

Hi Eyal,
it was tested with BW 20 MHz. It is still open and the additional details come soon.

Thanks
BR
Eduard

1/ Can you also please specify which spec exactly you referring to? It is not mentioned in your report.

• For RCM DFS is followed AN-NZS 4268.

2/ Can you also share more detailed data and report similar to the one we share for the TI module with a similar table to the one below ?

3/ In addition, what is the radar frequency with respect to the DUT’s frequency?

•  The center frequency of the receiver.

Hi Eyal,

any news in the solving of our issue with DFS?

Thanks

Best regards

Eduard

Hi Eyal, Rizwan,

could you please have a look at Eduard's answer and help us moving forward?

Thank you.

Regards, Bartosz

Hi Eduard,

My apologies, I was assuming that more data was going to be provided per the e2e thread dated on Jan 29 as it stats additional details to come.

Did you pass with 20MHz BW?.

Just so we are aligned, are you using the instructions as per the wiki below:

processors.wiki.ti.com/.../AP_DFS_Master

Thanks,
Riz

No, we did not pass the 20 MHz BW in all radar pulse types as you can see in the table in the previous comment.

BR

Eduard

Hi Eduard,

I consulted with our R&D team on this and we have a few follow questions / information that is needed:

1) From the table you provided it shows the transmit frequency is at 5260MHz, but it is unclear as to the offset frequency of the tests. Is interferer signal being supplied at the same center frequency? What is the detection rate when it is offset as show in the table Eyal provided? What we expect to see is that you have 100% until around +/-20MHz from the TX frequency as there is an internal 40MHz BPF.
2) What does your interferer signal look like. Can you provide this? do you have Matlab file perhaps were we can look at the signal closer?
3) What is the power level of the interferer? Can you provide more details of the setup? IF you lower the power level, do you see an improvement in the passing percentage?
4) We do not expect any issue as the latest FW has been verified to pass with no issues. Right now I think we need to consider the set up in more detail. Once we have a bit more of the information we can also see if it make sense to reproduce on our side.

Thanks,
Riz

Hi Eduard,

I am closing this thread for now. If this is still an issue, feel free to reopen.

Thanks,
Riz

AFAIK, this has been handled directly.
Closing this this thread.

BR,
Eyal

Radar signal.zip1)     From the table you provided it shows the transmit frequency is at 5260MHz, but it is unclear as to the offset frequency of the tests. Is interferer signal being supplied at the same center frequency?

ð Because the detection rate is very low, so we just pretested the 5260MHz.

What is the detection rate when it is offset as show in the table Eyal provided? What we expect to see is that you have 100% until around +/-20MHz from the TX frequency as there is an internal 40MHz BPF.

ð We just pretested the BW 20MHz now, if you wanna verify it under more conditions, it will be charged the testing fee.

2)     What does your interferer signal look like. Can you provide this? do you have Matlab file perhaps where we can look at the signal closer?

ð We don’t have the Matlab file but we’ve captured the signal PICs(Radar signal.zip) for your reference.

3)     What is the power level of the interferer? Can you provide more details of the setup?

ð The calculated signal level is -57dBm and test configuration

4)     IF you lower the power level, do you see an improvement in the passing percentage?

ð The result of the lower level is not better than before.