5g-compatible ldpc decoder for satellite communications

A decoder for decoding low-density parity-check (LDPC) code words,

• the decoder comprising at least one core and a memory wherein a number NC of predefined configurations are stored;
• the core being adapted to be dynamically configured with one of the predefined configurations stored in the memory to decode one of the LDPC code words using the one of the predefined configurations;
• wherein the predefined configurations form a subgroup, in the strict sense, of the 5G LDPC configurations defined in the 3GPP TS 38.212 standard;
• wherein each of the predefined configurations corresponding to a triplet of three parameters {K, R, Z}, and to a parity matrix defined according to at least a part of the three parameters (K, R, Z);
• wherein the parameter K corresponding to an LDPC code-encoded message size, the parameter Z corresponding to a parity matrix expansion factor, and the parameter R corresponding to an LDPC code coding rate,
• wherein a set of values taken by the parameter Z among the predefined configurations comprises at least two different values;
• and
• wherein the parity matrix associated with the NC predefined configurations being precomputed and stored in the memory.