Optimized Scheme of Frequency De-interleaving of China Digital Television Terrestrial Transport Standard

In this paper a new optimized scheme of china digital television terrestrial transport standard frequency de-interleaving is presented. It simplifies the conventional algorithm stipulated in china digital television terrestrial transport standard de-interleaving process which adopts first de-interleaver to de-interleave 3780 sub-carriers and second de-interleaver to separate the system information signal form the data signal. It uses only one de-interleaver to accomplish the function of the two de-interleavers. The new scheme economizes the consumption of the hardware resource, and be used in practical design of ASIC chip "zhongshi No. 2".