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https://designers-guide.org/forum/YaBB.pl Design >> High-Speed I/O Design >> BER https://designers-guide.org/forum/YaBB.pl?num=1327179023 Message started by raja.cedt on Jan 21st, 2012, 12:50pm |
Title: BER Post by raja.cedt on 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? Thanks, Raj. |
Title: Re: BER Post by loose-electron on 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 |
Title: Re: BER Post by philcorb on 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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