EARLY DETECTION OF SEGMENT TYPE USING BPSK AND DBPSK MODULATED CARRIERS IN ISDB-T RECEIVERS

摘要

A receiver system for early detection of a segment type of an input signal based on BPSK and DBPSK modulated carriers is provided. The receiver system includes a tuner 202 that converts the input signal into an intermediate frequency (IF) signal, a signal conditioning module that converts the IF signal into a baseband signal, a Frequency Domain Synchronisation (FDS) block 216 that detects the segment type of the input signal based on a carrier powers, a Transmission and Multiplexing Configuration Control (TMCC) decode block 218 that performs a decoding operation on the received signal, a channel estimation block 220 that estimates a channel and obtains a channel information. The TMCC decode block 218 uses the channel information obtained from channel estimation block 220 to correct a fast-frequency selective fading on the received signal before the decoding operation.