Low cost LDPC decoder for DVB-S2

Because of its excellent bit-error-rate performance, the low-density parity-check (LDPC) algorithm is gaining increased attention in communication standards and literature. The new digital video broadcast via satellite standard (DVB-S2) is the first broadcast standard to include a LDPC-code, and the first implementations are available. In our investigation of generic LDPC-implementations we found that scalable sub-block parallelism enables efficient implementations for a wide range of applications. For the DVB-S2 case, using subblock parallelism we obtain half the chip-size of known solutions. For the required performance in the normative configurations for the broadcast service (90Mbps), the area is even 1/3 compared to the smallest published decoder