Title :
Irregular low density parity check codes for Digital Radio Mondiale (DRM) applications
Author :
Wang, Jiaqing ; Yu, Xiaoyan ; Wu, Lenan
Author_Institution :
Dept. of Radio Eng., Southeast Univ., Nanjing, China
Abstract :
In the Digital Radio Mondiale (DRM) system, achieving good audio quality becomes a challenging task due to the limited bandwidth of 9 or 10 kHz and the very bad fading channels. Therefore, DRM has a need for highly efficient channel coding schemes. Recent advances in error correcting codes have shown that low-density parity-check codes (LDPC) can achieve a near Shannon-limit performance with reasonable decoding complexity. The paper evaluates the performance of the DRM system with LDPC coded bit-interleaved coded modulation (BICM) schemes, and shows that this system with 16 QAM is more effective than a rate compatible punctured convolutional (RCPC) coded DRM system is on various broadcast channels.
Keywords :
broadcast channels; channel coding; computational complexity; convolutional codes; decoding; digital audio broadcasting; error correction codes; fading channels; modulation coding; parity check codes; quadrature amplitude modulation; BICM; DRM; Digital Radio Mondiale; QAM; Shannon-limit performance; audio quality; bit-interleaved coded modulation; broadcast channels; channel coding; decoding complexity; digital audio broadcasting; error correcting codes; fading channels; irregular LDPC; irregular low density parity check codes; rate compatible punctured convolutional code; Bandwidth; Channel coding; Decoding; Digital Radio Mondiale; Error correction codes; Fading; Interleaved codes; Modulation coding; Parity check codes; Quadrature amplitude modulation;
Conference_Titel :
Intelligent Multimedia, Video and Speech Processing, 2004. Proceedings of 2004 International Symposium on
Print_ISBN :
0-7803-8687-6
DOI :
10.1109/ISIMP.2004.1434004
