Communications Toolbox™

dvbs2ldpc - Low-density parity-check codes from DVB-S.2 standard

Syntax

H = dvbs2ldpc(r)

Description

H = dvbs2ldpc(r) returns the parity-check matrix of the LDPC code with code rate r from the DVB-S.2 standard. H is a sparse logical matrix.

Possible values for r are 1/4, 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, and 9/10. The block length of the code is 64800.

Example

H = dvbs2ldpc(3/5);
spy(H);   % Visualize the location of nonzero elements in H.
henc = fec.ldpcenc(H);
hdec = fec.ldpcdec(H);

See Also

fec.ldpcdec, fec.ldpcenc, spy

dpskmod

encode