DVB-H (Digital Video Broadcasting -- Handheld) technology is based on ETSI (European Telecommunications Standards Institute) standard designed to bring the broadcast services to battery-powered handheld receivers such as mobile phones and PDA's. The system is defined based on the existing DVB-T (Terrestrial) system allowing for lower power consumption, lower signal strengths and fast movements. DVB-H system uses Orthogonal Frequency Division Multiplexing (OFDM) technique to deliver multimedia services in any of the three bandwidth modes i.e. 6, 7 and 8 MHz. OFDM has been successful in numerous wireless applications, where its superior performance in multi-path environments is desirable. It is a multicarrier system where the data is transmitted in parallel sub channels by using several subcarriers. All the data carriers in one OFDM frame can be modulated using either QPSK, 16-QAM or 64-QAM. In this thesis, DVB-H (Physical layer) system is simulated using 4096 FFT mode and the signal transmitted is in accordance with the specification of ETSI TR 102 377. Multipath Rician and Rayleigh channel conditions are considered. The main emphasis is on the receiver; concentrating mainly on the Squelch detection, symbol timing synchronization, correcting the coarse frequency offset and channel estimation for the DVB-H system. Various stages of the signal recovery process are also discussed.
