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Sep 27th, 2021, 12:49pm
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BER (Read 3582 times)
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Jan 21st, 2012, 12:50pm
hello all,
On what basis people decide targeted BER, like many system designers prefer 10^-12 in most of the cases, and i heard old TV and small length communication people preferred even 10^-20. I have some understanding on BER like total invariance of the noise relation to some specific number, but would like to know fundamental reason behind choosing BER target?

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Reply #1 - Jan 21st, 2012, 7:09pm
the defined need for a specified BER is more at the system level than the PHY level.

Up in the DSP part of the system application of
protocols - redundancy - ECC will allow for different
error rates that can be tolerated.

any audio system of low quality sound can tolerate more errors than
binary data with no parity or ECC's
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Jerry Twomey
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Reply #2 - Feb 10th, 2012, 12:47am
In some transmission standards BER can relate to the possibility of a reliable link.  For example BlueTooth LE has a BER=0.1%.  This represents a packet error rate of ~30%, about the maximum error to maintain a link.  In other words, for every 3 packets sent, 2 should be received.
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