Bit interleaving method for digital TV ground transmission
A digital TV terrestrial and bit interleaving technology, applied in the field of digital signal transmission, can solve problems such as affecting system performance, uneven distribution of data errors at the receiving end, and signal-to-noise ratio threshold damage.
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[0041] The present invention will be further described below in conjunction with the accompanying drawings and examples.
[0042] The present invention can be applied to the digital television terrestrial transmission system (ADTB-T system) high code rate 16-OQAM transmission mode that the applicant designs, and TPC (M 2 ,M 1 ; N 2 , N 1 ) code combination to improve the system's ability to resist burst errors. For TPC (M 2 ,M 1 ; N 2 , N 1 ) encoded data block TPC(M 2 ×N 2 ) for bit interleaving. Each time there are K TPC encoded data blocks TPC(M 2 ×N 2 ) participate in bit interleaving. In the ADTB-T system, M 2 , M 1 , N 2 , N 1 128, 120, 128 and 120 respectively. When interleaving and outputting, the data at the same position of each TPC block is sequentially output in the order of K TPC blocks; the output of data in each TPC block is arranged in diagonal order.
[0043] For the high code rate 16-OQAM transmission mode, K can be selected as 32, 64, 128 o...
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