rds and fm transmitters

Hai

What is the difference between RDS transmitter and FM transmitter ? Can we add RDS data in conventional analog fm transmission ? Is our mobile phone FM reciever is analog or digital ? Then how can our mobile phone process as analog fm receiver or digital fm receiver ? Normally what is the transmitter used in FM transission , is it anlaog transmitter or digital transmitter ?


regards
Aneesh

RDS modulation is a QPSK modulation. It is a subcarrier of FM broadcast radio base band, 58 kHz above center freq.
One common type of FM TX including RDS, used in many cell phones.
TX PA can be driven in several modes but carrier wave type is analog for all types of radio-waves I know about.