TIME-FREQUENCY SYNCHRONIZATION AND FRAME NUMBER DETECTION FOR DMB-T SYSTEMS

摘要

A DMB-T receiver supports a single carrier (SC) form of modulation and a multi-carrier form of modulation such as orthogonal frequency division multiplexing (OFDM). Upon receiving a broadcast signal, the DMB-T receiver downconverts the received broadcast signal to a received base-band signal and determines frame timing synchronization from the received signal as a function of frame header mode 1 and frame header mode 3 by correlating groups of received symbols spaced at least two signal frames apart within a sample shift value in a range of plus or minus one.