Title :
Parity and column twist bit interleaver for DVB-T2 LDPC codes
Author :
Yokokawa, Takashi ; Kan, Makiko ; Okada, Satoshi ; Sakai, Lui
Author_Institution :
Sony Corp., Tokyo
Abstract :
We introduce a parity and column twist bit interleaver which improves performance of DVB-T2 LDPC codes in channels with erasure. The key idea is avoiding multiple bits on constellation symbols which are connected to the same check node, in order to minimize damage by an erased symbol. By simulation we observed significant performance improvement in faded erasure channels, and the higher erasure probability, the more gain we observed.
Keywords :
digital video broadcasting; interleaved codes; parity check codes; DVB-T2 LDPC codes; column twist bit interleaver; erasure probability; faded erasure channels; parity twist bit interleaver; Belief propagation; Block codes; Cities and towns; Decoding; Digital video broadcasting; Parity check codes; Performance gain; Poles and towers; Satellite broadcasting; Turbo codes;
Conference_Titel :
Turbo Codes and Related Topics, 2008 5th International Symposium on
Conference_Location :
Lausanne
Print_ISBN :
978-1-4244-2862-5
Electronic_ISBN :
978-1-4244-2863-2
DOI :
10.1109/TURBOCODING.2008.4658684
