A wireless data communication system includes a code encoder for transforming pulse code modulated data into a simple code having an alphabet with at least one spare symbol into which a delimiter symbol is introduced, which code is transmitted to a receiver including a matched filter arrangement and...http://www.google.de/patents/US5570388?utm_source=gb-gplus-sharePatent US5570388 - Method and apparatus using simple codes for the wireless transmission of non-data symbols
