CC2500: How define theorical BER

gregoire.lumeau

Part Number: CC2500

Hello,

I would like to define the best compromise between sensitivity and decoding error depending on the radio parameters configured on the chip.

How do I define the BER of a radio configuration for a CC2500?

Thanks

over 1 year ago

+1 Ryan Brown1 over 1 year ago

TI__Guru**** 202096 points

Hello gregoire,

Packet error rate (PER) is related to bit error rate (BER) by PER = 1 (1-BER)^{packet_length}. You can evaluate PER with Example libraries, SimpliciTI, or Smart RF Studio tests. Here are some relevant E2E threads concerning how to monitor the BER:

https://e2e.ti.com/f/1/t/3786113
https://e2e.ti.com/f/1/t/3641710
https://e2e.ti.com/f/1/t/3804721

You can use the PER tests to then evaluate whether modifying the MDMCFG2.DEM_DCFILT_OFF and TEST1/2 registers (for sensitivity levels) will improve your system.

Regards,
Ryan

0 gregoire.lumeau over 1 year ago in reply to Ryan Brown1

Intellectual 320 points

Hello Ryan,

Your link https://e2e.ti.com/f/1/t/3786113... don't works

If I understand your method is experimental, it is not possible to define the BER theoretically?

Regards

0 Ryan Brown1 over 1 year ago in reply to gregoire.lumeau

TI__Guru**** 202096 points

I apologize for the broken links. Here they are again (and corrected in the other E2E response):

https://e2e.ti.com/f/1/t/1024299
https://e2e.ti.com/f/1/t/984852
https://e2e.ti.com/f/1/t/1029025

Bit error rate must be measured, it cannot be theorized using only sensitivity parameters. There are RF receive results with sensitivity levels for a 1% PER provided in the datasheet.

Regards,
Ryan

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CC2500: How define theorical BER