Irregular low density parity check codes for digital radio mondiale (DRM) applications
Jiaqing Wang, Xiaoyan Yu, Lenan Wu · 2005
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.