CC2544: CC2544+CC2640R2 easily affected by WiFi

Jerry,

I am looking into the PER issue and I will get back to you with my findings.

Regards,

Daniel

Hi Jerry,

Please give me a day to parse through the information you've attached and try to understand the issue. I'll get back you you on Monday.

Thanks,

Alexis

Hi Jerry,

Sorry for the delay here. 

After looking at the data, I believe that the main reason you're seeing the issue with the CC2544 and not the CC2640R2F is the data rate. 250kbps is going to be more robust than 2Mbps since it has smaller packets. 

Additionally, even though  Wi-Fi is operating on a different frequency in your experiment, having it on vs. off effects your noise floor by ~10dBm. This increased noise floor is why your PER degrades with distance.

My guess is that if you try the CC2544 at 250kbps you'll see an improvement.

Thanks,

Alexis

Hi Alexis,

Thanks for your reply.

While WiFi is on (channel 11), the noise floor increases 10dBm (at 2403MHz). But the noise floor is -120 dBm which should be much lower than the signal from CC2640R2. What's the root cause affect the communication between CC2640R2 and CC2544 ? 

Please provide suggestion to improve this scenario.

Besides, could you ask team to provide the SRF configuration for CC2640R2 to perform 2Mbps PER test ? Then we can do PER test with CC2640R2 and CC244 at 2Mbps.

Hi Jerry,

Do they have RSSI measurements for Experiment #2?  

Please use the method outlined in this post to enable 2Mbps for proprietary on the CC2640R2:

https://e2e.ti.com/support/wireless-connectivity/other-wireless/f/other-wireless-technologies-forum/750194/cc2640-configuring-cc2640-for-proprietary-mode 

Thanks,

Alexis