Boki said:
Thanks : )
Best regards,
Boki.
What BER you can live with (and I deal with Bluetooth every day in my
products) depends on what the link is being used for.
For voice data which can not be retransmitted (well, it could but there
would be no point) you want as low a BER as possible. I am talking here
about links that do not operate at much higher speed than necessary but
a typical bluetooth synchronous (SCO) link which provides a 8K frame
rate where the frames are to be pushed / pulled directly to / from a
codec.
For the asynchronous data (ACL) channels, if your datarate is low and
you embed CRC/checksum in the data you can simply retransmit the data
if you can't live with errors in the serial datastream.
Voice links are rated at 1E-6 BER for 'carrier grade' status,
incidentally.
You will start to notice significant degradation in a bluetooth voice
link at 1E-2 BER. 1E-3 (0.1%) gives understandable and fairly clear
voice links, at least in my experience.
Cheers
PeteS