Timeline for Bit error rate objectives

4 events

when toggle format	what		by	license	comment
Dec 3, 2014 at 22:15	vote	accept	hryghr
Dec 3, 2014 at 22:08	comment	added	hryghr		I was measuring a visible light wireless link. Before creating the transmitter, I was told that the signal should be detectable 50 cm away from the the receiver. I wanted to have something more measurable than detectability and analysed the eye pattern, measuring its Q factor (which you can easily turn into BER). Then I thought about "drawing a line", above which the BER is acceptable, but didn't want it to seem that I adjusted that value so that it's still good at the desired distance, 50 cm. That's why I was looking for standards/typical values.
Dec 3, 2014 at 16:02	comment	added	supercat		A complication when trying to characterize error rates for things like wireless links is that bit errors in the raw data link are often not independent; if they were, and if 99% of 256-bit packets went through with no bit errors, that would suggest a raw error rate of less than 0.005%, which would in turn suggest that more than 99.999999% of packets would go through with at most eight bit errors, so adding forward error correction sufficient to recover eight bit errors would ensure reliable delivery. Of course, wireless links don't work that nicely.
Dec 3, 2014 at 14:51	history	answered	Andy aka	CC BY-SA 3.0