Digital broadcasts using a FM transmitter

Abstract: Every night, local newspapers are broadcasted on Sveriges Radio P1 all over
Sweden. These newspapers are for the visually impaired, afatics, dyslectics
and disabled persons that for some reason can not read printed newspapers.
To be able to listen to these papers, the listener have to borrow a special
receiver from Taltidningsnämnden, a Swedish government authority.

The receivers used for recording these newspapers are now old and have to be
replaced by new ones. The new receiver, called Adela, is built upon a
digital signal processor but the broadcasts still remain analog and it is
the purpose of this thesis to investigate suitable modulation, symbol
synchronization, symbol detection and equalization techniques for digital
transmissions over the existing FM network.

Finally a proof-of-concept decoder system was built to evaluate the chosen
techniques.