ABSTRACT
This chapter provides a method of transmitting a low-bit rate digital signal using analog FM radio. The Radio Data System (RDS) Standard was originally adopted in 1982 by the European Broadcasting Union for transmitting low bit rate digital information to appropriate receivers using conventional FM radio broadcasts. Radio Broadcast Data System was the official name used for the U. S. version of the RDS Standard, when it was first adopted in 1993 by the National Radio Systems Committee with revisions in 1998, 2005 and 2011. The RDS signal is modulated and demodulated as a synchronous bit stream. The RDS system supports the transmission of numerous types of information, including time and station identification. The RDS signal is modulated and demodulated as a synchronous bit stream. RDS offers a choice of some 20 well-defined features, but the limited data capacity restricts the number that can be implemented in a single channel.
