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Increase of transmisson reliability (STBC?)

Question asked by shiny on Oct 16, 2012
Latest reply on Oct 17, 2012 by enash



I'd like to transmit timing data (time critical) with the 868MHz band.

The transceiver chip should send an interrupt to the host ucontroller if a defined preamble is detected

(this requirement is met by many transceiver ICs).


In order to increase the quality of the transmission channel, I'd like to use Alamouti-coding with
two transmitting and one receiving antenna (space-time block coding).
The drawback would be that the preamble is potentially detected just afterwards the Alamouti-decoding -
which is done on the host controller I guess. So I have a few questions:


- Are there RF-transceiver (receiver) chips with integrated Alamouti-coding (or similar)?


- Is it possible to use Alamouti-coding if FSK is used as modulation?


- Are there other alternative coding schemes that guarantee better transmission reliability (better BER) and allow for instant preamble detection?


Thanks in advance,